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6b398eb72cc6c70fb776bec93efebb7578bcc981
rocm-systems/runtime/hsa-runtime/core/runtime/runtime.cpp
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Sean Keely 6b398eb72c Improve async handler performance. 
Under high async handler load signal retention and event sorting
become bottlenecks.  This change processes more handlers in a
single pass to amortize wait_any overheads.

Change-Id: I8b276e102db647e3858e120547aa0c6fca85ab4c
2021-06-02 23:52:07 -05:00

2140 líneas
75 KiB
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////////////////////////////////////////////////////////////////////////////////
//
// The University of Illinois/NCSA
// Open Source License (NCSA)
//
// Copyright (c) 2014-2020, Advanced Micro Devices, Inc. All rights reserved.
//
// Developed by:
//
// AMD Research and AMD HSA Software Development
//
// Advanced Micro Devices, Inc.
//
// www.amd.com
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal with the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// - Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimers.
// - Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimers in
// the documentation and/or other materials provided with the distribution.
// - Neither the names of Advanced Micro Devices, Inc,
// nor the names of its contributors may be used to endorse or promote
// products derived from this Software without specific prior written
// permission.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS WITH THE SOFTWARE.
//
////////////////////////////////////////////////////////////////////////////////
#include "core/inc/runtime.h"
#include <algorithm>
#include <atomic>
#include <cstring>
#include <string>
#include <thread>
#include <vector>
#include "core/common/shared.h"
#include "core/inc/hsa_ext_interface.h"
#include "core/inc/amd_cpu_agent.h"
#include "core/inc/amd_gpu_agent.h"
#include "core/inc/amd_memory_region.h"
#include "core/inc/amd_topology.h"
#include "core/inc/signal.h"
#include "core/inc/interrupt_signal.h"
#include "core/inc/hsa_ext_amd_impl.h"
#include "core/inc/hsa_api_trace_int.h"
#include "core/util/os.h"
#include "core/inc/exceptions.h"
#include "inc/hsa_ven_amd_aqlprofile.h"
#define HSA_VERSION_MAJOR 1
#define HSA_VERSION_MINOR 1
const char rocrbuildid[] __attribute__((used)) = "ROCR BUILD ID: " STRING(ROCR_BUILD_ID);
namespace rocr {
namespace core {
bool g_use_interrupt_wait = true;
Runtime* Runtime::runtime_singleton_ = NULL;
KernelMutex Runtime::bootstrap_lock_;
static bool loaded = true;
class RuntimeCleanup {
public:
~RuntimeCleanup() {
if (!Runtime::IsOpen()) {
delete Runtime::runtime_singleton_;
}
loaded = false;
}
};
static RuntimeCleanup cleanup_at_unload_;
hsa_status_t Runtime::Acquire() {
// Check to see if HSA has been cleaned up (process exit)
if (!loaded) return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
ScopedAcquire<KernelMutex> boot(&bootstrap_lock_);
if (runtime_singleton_ == NULL) {
runtime_singleton_ = new Runtime();
}
if (runtime_singleton_->ref_count_ == INT32_MAX) {
return HSA_STATUS_ERROR_REFCOUNT_OVERFLOW;
}
runtime_singleton_->ref_count_++;
MAKE_NAMED_SCOPE_GUARD(refGuard, [&]() { runtime_singleton_->ref_count_--; });
if (runtime_singleton_->ref_count_ == 1) {
hsa_status_t status = runtime_singleton_->Load();
if (status != HSA_STATUS_SUCCESS) {
return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
}
}
refGuard.Dismiss();
return HSA_STATUS_SUCCESS;
}
hsa_status_t Runtime::Release() {
// Check to see if HSA has been cleaned up (process exit)
if (!loaded) return HSA_STATUS_SUCCESS;
ScopedAcquire<KernelMutex> boot(&bootstrap_lock_);
if (runtime_singleton_ == nullptr) return HSA_STATUS_ERROR_NOT_INITIALIZED;
if (runtime_singleton_->ref_count_ == 1) {
// Release all registered memory, then unload backends
runtime_singleton_->Unload();
}
runtime_singleton_->ref_count_--;
if (runtime_singleton_->ref_count_ == 0) {
delete runtime_singleton_;
runtime_singleton_ = nullptr;
}
return HSA_STATUS_SUCCESS;
}
bool Runtime::IsOpen() {
return (Runtime::runtime_singleton_ != NULL) &&
(Runtime::runtime_singleton_->ref_count_ != 0);
}
// Register agent information only. Must not call anything that may use the registered information
// since those tables are incomplete.
void Runtime::RegisterAgent(Agent* agent) {
// Record the agent in the node-to-agent reverse lookup table.
agents_by_node_[agent->node_id()].push_back(agent);
// Process agent as a cpu or gpu device.
if (agent->device_type() == Agent::DeviceType::kAmdCpuDevice) {
cpu_agents_.push_back(agent);
// Add cpu regions to the system region list.
for (const core::MemoryRegion* region : agent->regions()) {
if (region->fine_grain()) {
system_regions_fine_.push_back(region);
} else {
system_regions_coarse_.push_back(region);
}
}
assert(system_regions_fine_.size() > 0);
// Init default fine grain system region allocator using fine grain
// system region of the first discovered CPU agent.
if (cpu_agents_.size() == 1) {
// Might need memory pooling to cover allocation that
// requires less than 4096 bytes.
// Default system pool must support kernarg
for (auto pool : system_regions_fine_) {
if (pool->kernarg()) {
system_allocator_ = [pool](size_t size, size_t alignment,
MemoryRegion::AllocateFlags alloc_flags) -> void* {
assert(alignment <= 4096);
void* ptr = NULL;
return (HSA_STATUS_SUCCESS ==
core::Runtime::runtime_singleton_->AllocateMemory(pool, size, alloc_flags,
&ptr))
? ptr
: NULL;
};
system_deallocator_ = [](void* ptr) {
core::Runtime::runtime_singleton_->FreeMemory(ptr);
};
BaseShared::SetAllocateAndFree(system_allocator_, system_deallocator_);
break;
}
}
}
} else if (agent->device_type() == Agent::DeviceType::kAmdGpuDevice) {
gpu_agents_.push_back(agent);
gpu_ids_.push_back(agent->node_id());
// Assign the first discovered gpu agent as region gpu.
if (region_gpu_ == NULL) region_gpu_ = agent;
}
}
void Runtime::DestroyAgents() {
agents_by_node_.clear();
std::for_each(gpu_agents_.begin(), gpu_agents_.end(), DeleteObject());
gpu_agents_.clear();
gpu_ids_.clear();
std::for_each(cpu_agents_.begin(), cpu_agents_.end(), DeleteObject());
cpu_agents_.clear();
region_gpu_ = NULL;
system_regions_fine_.clear();
system_regions_coarse_.clear();
}
void Runtime::SetLinkCount(size_t num_nodes) {
num_nodes_ = num_nodes;
link_matrix_.resize(num_nodes * num_nodes);
}
void Runtime::RegisterLinkInfo(uint32_t node_id_from, uint32_t node_id_to,
uint32_t num_hop,
hsa_amd_memory_pool_link_info_t& link_info) {
const uint32_t idx = GetIndexLinkInfo(node_id_from, node_id_to);
link_matrix_[idx].num_hop = num_hop;
link_matrix_[idx].info = link_info;
// Limit the number of hop to 1 since the runtime does not have enough
// information to share to the user about each hop.
link_matrix_[idx].num_hop = std::min(link_matrix_[idx].num_hop , 1U);
}
const Runtime::LinkInfo Runtime::GetLinkInfo(uint32_t node_id_from,
uint32_t node_id_to) {
return (node_id_from != node_id_to)
? link_matrix_[GetIndexLinkInfo(node_id_from, node_id_to)]
: LinkInfo(); // No link.
}
uint32_t Runtime::GetIndexLinkInfo(uint32_t node_id_from, uint32_t node_id_to) {
return ((node_id_from * num_nodes_) + node_id_to);
}
hsa_status_t Runtime::IterateAgent(hsa_status_t (*callback)(hsa_agent_t agent,
void* data),
void* data) {
AMD::callback_t<decltype(callback)> call(callback);
std::vector<core::Agent*>* agent_lists[2] = {&cpu_agents_, &gpu_agents_};
for (std::vector<core::Agent*>* agent_list : agent_lists) {
for (size_t i = 0; i < agent_list->size(); ++i) {
hsa_agent_t agent = Agent::Convert(agent_list->at(i));
hsa_status_t status = call(agent, data);
if (status != HSA_STATUS_SUCCESS) {
return status;
}
}
}
return HSA_STATUS_SUCCESS;
}
hsa_status_t Runtime::AllocateMemory(const MemoryRegion* region, size_t size,
MemoryRegion::AllocateFlags alloc_flags,
void** address) {
ScopedAcquire<KernelMutex> lock(&memory_lock_);
hsa_status_t status = region->Allocate(size, alloc_flags, address);
// Track the allocation result so that it could be freed properly.
if (status == HSA_STATUS_SUCCESS) {
allocation_map_[*address] = AllocationRegion(region, size);
}
return status;
}
hsa_status_t Runtime::FreeMemory(void* ptr) {
if (ptr == nullptr) {
return HSA_STATUS_SUCCESS;
}
const MemoryRegion* region = nullptr;
size_t size = 0;
std::unique_ptr<std::vector<AllocationRegion::notifier_t>> notifiers;
{
ScopedAcquire<KernelMutex> lock(&memory_lock_);
std::map<const void*, AllocationRegion>::iterator it = allocation_map_.find(ptr);
if (it == allocation_map_.end()) {
debug_warning(false && "Can't find address in allocation map");
return HSA_STATUS_ERROR_INVALID_ALLOCATION;
}
region = it->second.region;
size = it->second.size;
// Imported fragments can't be released with FreeMemory.
if (region == nullptr) {
assert(false && "Can't release imported memory with free.");
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
}
notifiers = std::move(it->second.notifiers);
allocation_map_.erase(it);
// Fast path to avoid doubling lock ops in the common case (no notifiers).
if (!notifiers) return region->Free(ptr, size);
}
// Notifiers can't run while holding the lock or the callback won't be able to manage memory.
// The memory triggering the notification has already been removed from the memory map so can't
// be double released during the callback.
for (auto& notifier : *notifiers) {
notifier.callback(notifier.ptr, notifier.user_data);
}
// Fragment allocator requires protection.
ScopedAcquire<KernelMutex> lock(&memory_lock_);
return region->Free(ptr, size);
}
hsa_status_t Runtime::RegisterReleaseNotifier(void* ptr, hsa_amd_deallocation_callback_t callback,
void* user_data) {
ScopedAcquire<KernelMutex> lock(&memory_lock_);
auto mem = allocation_map_.upper_bound(ptr);
if (mem != allocation_map_.begin()) {
mem--;
// No support for imported fragments yet.
if (mem->second.region == nullptr) return HSA_STATUS_ERROR_INVALID_ALLOCATION;
if ((mem->first <= ptr) &&
(ptr < reinterpret_cast<const uint8_t*>(mem->first) + mem->second.size)) {
auto& notifiers = mem->second.notifiers;
if (!notifiers) notifiers.reset(new std::vector<AllocationRegion::notifier_t>);
AllocationRegion::notifier_t notifier = {
ptr, AMD::callback_t<hsa_amd_deallocation_callback_t>(callback), user_data};
notifiers->push_back(notifier);
return HSA_STATUS_SUCCESS;
}
}
return HSA_STATUS_ERROR_INVALID_ALLOCATION;
}
hsa_status_t Runtime::DeregisterReleaseNotifier(void* ptr,
hsa_amd_deallocation_callback_t callback) {
hsa_status_t ret = HSA_STATUS_ERROR_INVALID_ARGUMENT;
ScopedAcquire<KernelMutex> lock(&memory_lock_);
auto mem = allocation_map_.upper_bound(ptr);
if (mem != allocation_map_.begin()) {
mem--;
if ((mem->first <= ptr) &&
(ptr < reinterpret_cast<const uint8_t*>(mem->first) + mem->second.size)) {
auto& notifiers = mem->second.notifiers;
if (!notifiers) return HSA_STATUS_ERROR_INVALID_ARGUMENT;
for (size_t i = 0; i < notifiers->size(); i++) {
if (((*notifiers)[i].ptr == ptr) && ((*notifiers)[i].callback) == callback) {
(*notifiers)[i] = std::move((*notifiers)[notifiers->size() - 1]);
notifiers->pop_back();
i--;
ret = HSA_STATUS_SUCCESS;
}
}
}
}
return ret;
}
hsa_status_t Runtime::CopyMemory(void* dst, const void* src, size_t size) {
void* source = const_cast<void*>(src);
// Choose agents from pointer info
bool is_src_system = false;
bool is_dst_system = false;
core::Agent* src_agent;
core::Agent* dst_agent;
// Fetch ownership
const auto& is_system_mem = [&](void* ptr, core::Agent*& agent, bool& need_lock) {
hsa_amd_pointer_info_t info;
uint32_t count;
hsa_agent_t* accessible = nullptr;
MAKE_SCOPE_GUARD([&]() { free(accessible); });
info.size = sizeof(info);
hsa_status_t err = PtrInfo(ptr, &info, malloc, &count, &accessible);
if (err != HSA_STATUS_SUCCESS)
throw AMD::hsa_exception(err, "PtrInfo failed in hsa_memory_copy.");
ptrdiff_t endPtr = (ptrdiff_t)ptr + size;
if (info.agentBaseAddress <= ptr &&
endPtr <= (ptrdiff_t)info.agentBaseAddress + info.sizeInBytes) {
if (info.agentOwner.handle == 0) info.agentOwner = accessible[0];
agent = core::Agent::Convert(info.agentOwner);
need_lock = false;
return agent->device_type() != core::Agent::DeviceType::kAmdGpuDevice;
} else {
need_lock = true;
agent = cpu_agents_[0];
return true;
}
};
bool src_lock, dst_lock;
is_src_system = is_system_mem(source, src_agent, src_lock);
is_dst_system = is_system_mem(dst, dst_agent, dst_lock);
// CPU-CPU
if (is_src_system && is_dst_system) {
memcpy(dst, source, size);
return HSA_STATUS_SUCCESS;
}
// Same GPU
if (src_agent->node_id() == dst_agent->node_id()) return dst_agent->DmaCopy(dst, source, size);
// GPU-CPU
// Must ensure that system memory is visible to the GPU during the copy.
const AMD::MemoryRegion* system_region =
static_cast<const AMD::MemoryRegion*>(system_regions_fine_[0]);
void* gpuPtr = nullptr;
const auto& locked_copy = [&](void*& ptr, core::Agent* locking_agent) {
void* tmp;
hsa_agent_t agent = locking_agent->public_handle();
hsa_status_t err = system_region->Lock(1, &agent, ptr, size, &tmp);
if (err != HSA_STATUS_SUCCESS) throw AMD::hsa_exception(err, "Lock failed in hsa_memory_copy.");
gpuPtr = ptr;
ptr = tmp;
};
MAKE_SCOPE_GUARD([&]() {
if (gpuPtr != nullptr) system_region->Unlock(gpuPtr);
});
if (src_lock) locked_copy(source, dst_agent);
if (dst_lock) locked_copy(dst, src_agent);
if (is_src_system) return dst_agent->DmaCopy(dst, source, size);
if (is_dst_system) return src_agent->DmaCopy(dst, source, size);
/*
GPU-GPU - functional support, not a performance path.
This goes through system memory because we have to support copying between non-peer GPUs
and we can't use P2P pointers even if the GPUs are peers. Because hsa_amd_agents_allow_access
requires the caller to specify all allowed agents we can't assume that a peer mapped pointer
would remain mapped for the duration of the copy.
*/
void* temp = system_allocator_(size, 0, core::MemoryRegion::AllocateNoFlags);
MAKE_SCOPE_GUARD([&]() { system_deallocator_(temp); });
hsa_status_t err = src_agent->DmaCopy(temp, source, size);
if (err == HSA_STATUS_SUCCESS) err = dst_agent->DmaCopy(dst, temp, size);
return err;
}
hsa_status_t Runtime::CopyMemory(void* dst, core::Agent& dst_agent,
const void* src, core::Agent& src_agent,
size_t size,
std::vector<core::Signal*>& dep_signals,
core::Signal& completion_signal) {
const bool dst_gpu =
(dst_agent.device_type() == core::Agent::DeviceType::kAmdGpuDevice);
const bool src_gpu =
(src_agent.device_type() == core::Agent::DeviceType::kAmdGpuDevice);
if (dst_gpu || src_gpu) {
core::Agent* copy_agent = (src_gpu) ? &src_agent : &dst_agent;
return copy_agent->DmaCopy(dst, dst_agent, src, src_agent, size, dep_signals,
completion_signal);
}
// For cpu to cpu, fire and forget a copy thread.
const bool profiling_enabled =
(dst_agent.profiling_enabled() || src_agent.profiling_enabled());
if (profiling_enabled) completion_signal.async_copy_agent(&dst_agent);
std::thread(
[](void* dst, const void* src, size_t size,
std::vector<core::Signal*> dep_signals,
core::Signal* completion_signal, bool profiling_enabled) {
for (core::Signal* dep : dep_signals) {
dep->WaitRelaxed(HSA_SIGNAL_CONDITION_EQ, 0, UINT64_MAX,
HSA_WAIT_STATE_BLOCKED);
}
if (profiling_enabled) {
core::Runtime::runtime_singleton_->GetSystemInfo(HSA_SYSTEM_INFO_TIMESTAMP,
&completion_signal->signal_.start_ts);
}
memcpy(dst, src, size);
if (profiling_enabled) {
core::Runtime::runtime_singleton_->GetSystemInfo(HSA_SYSTEM_INFO_TIMESTAMP,
&completion_signal->signal_.end_ts);
}
completion_signal->SubRelease(1);
},
dst, src, size, dep_signals, &completion_signal,
profiling_enabled).detach();
return HSA_STATUS_SUCCESS;
}
hsa_status_t Runtime::FillMemory(void* ptr, uint32_t value, size_t count) {
// Choose blit agent from pointer info
hsa_amd_pointer_info_t info;
uint32_t agent_count;
hsa_agent_t* accessible = nullptr;
info.size = sizeof(info);
MAKE_SCOPE_GUARD([&]() { free(accessible); });
hsa_status_t err = PtrInfo(ptr, &info, malloc, &agent_count, &accessible);
if (err != HSA_STATUS_SUCCESS) return err;
ptrdiff_t endPtr = (ptrdiff_t)ptr + count * sizeof(uint32_t);
// Check for GPU fill
// Selects GPU fill for SVM and Locked allocations if a GPU address is given and is mapped.
if (info.agentBaseAddress <= ptr &&
endPtr <= (ptrdiff_t)info.agentBaseAddress + info.sizeInBytes) {
core::Agent* blit_agent = core::Agent::Convert(info.agentOwner);
if (blit_agent->device_type() != core::Agent::DeviceType::kAmdGpuDevice) {
blit_agent = nullptr;
for (uint32_t i = 0; i < agent_count; i++) {
if (core::Agent::Convert(accessible[i])->device_type() ==
core::Agent::DeviceType::kAmdGpuDevice) {
blit_agent = core::Agent::Convert(accessible[i]);
break;
}
}
}
if (blit_agent) return blit_agent->DmaFill(ptr, value, count);
}
// Host and unmapped SVM addresses copy via host.
if (info.hostBaseAddress <= ptr && endPtr <= (ptrdiff_t)info.hostBaseAddress + info.sizeInBytes) {
memset(ptr, value, count * sizeof(uint32_t));
return HSA_STATUS_SUCCESS;
}
return HSA_STATUS_ERROR_INVALID_ALLOCATION;
}
hsa_status_t Runtime::AllowAccess(uint32_t num_agents,
const hsa_agent_t* agents, const void* ptr) {
const AMD::MemoryRegion* amd_region = NULL;
size_t alloc_size = 0;
{
ScopedAcquire<KernelMutex> lock(&memory_lock_);
std::map<const void*, AllocationRegion>::const_iterator it = allocation_map_.find(ptr);
if (it == allocation_map_.end()) {
return HSA_STATUS_ERROR;
}
amd_region = reinterpret_cast<const AMD::MemoryRegion*>(it->second.region);
alloc_size = it->second.size;
}
return amd_region->AllowAccess(num_agents, agents, ptr, alloc_size);
}
hsa_status_t Runtime::GetSystemInfo(hsa_system_info_t attribute, void* value) {
switch (attribute) {
case HSA_SYSTEM_INFO_VERSION_MAJOR:
*((uint16_t*)value) = HSA_VERSION_MAJOR;
break;
case HSA_SYSTEM_INFO_VERSION_MINOR:
*((uint16_t*)value) = HSA_VERSION_MINOR;
break;
case HSA_SYSTEM_INFO_TIMESTAMP: {
HsaClockCounters clocks;
hsaKmtGetClockCounters(0, &clocks);
*((uint64_t*)value) = clocks.SystemClockCounter;
break;
}
case HSA_SYSTEM_INFO_TIMESTAMP_FREQUENCY: {
assert(sys_clock_freq_ != 0 &&
"Use of HSA_SYSTEM_INFO_TIMESTAMP_FREQUENCY before HSA "
"initialization completes.");
*(uint64_t*)value = sys_clock_freq_;
break;
}
case HSA_SYSTEM_INFO_SIGNAL_MAX_WAIT:
*((uint64_t*)value) = 0xFFFFFFFFFFFFFFFF;
break;
case HSA_SYSTEM_INFO_ENDIANNESS:
#if defined(HSA_LITTLE_ENDIAN)
*((hsa_endianness_t*)value) = HSA_ENDIANNESS_LITTLE;
#else
*((hsa_endianness_t*)value) = HSA_ENDIANNESS_BIG;
#endif
break;
case HSA_SYSTEM_INFO_MACHINE_MODEL:
#if defined(HSA_LARGE_MODEL)
*((hsa_machine_model_t*)value) = HSA_MACHINE_MODEL_LARGE;
#else
*((hsa_machine_model_t*)value) = HSA_MACHINE_MODEL_SMALL;
#endif
break;
case HSA_SYSTEM_INFO_EXTENSIONS: {
memset(value, 0, sizeof(uint8_t) * 128);
auto setFlag = [&](uint32_t bit) {
assert(bit < 128 * 8 && "Extension value exceeds extension bitmask");
uint index = bit / 8;
uint subBit = bit % 8;
((uint8_t*)value)[index] |= 1 << subBit;
};
if (hsa_internal_api_table_.finalizer_api.hsa_ext_program_finalize_fn != NULL) {
setFlag(HSA_EXTENSION_FINALIZER);
}
if (hsa_internal_api_table_.image_api.hsa_ext_image_create_fn != NULL) {
setFlag(HSA_EXTENSION_IMAGES);
}
if (os::LibHandle lib = os::LoadLib(kAqlProfileLib)) {
os::CloseLib(lib);
setFlag(HSA_EXTENSION_AMD_AQLPROFILE);
}
setFlag(HSA_EXTENSION_AMD_PROFILER);
break;
}
case HSA_AMD_SYSTEM_INFO_BUILD_VERSION: {
*(const char**)value = STRING(ROCR_BUILD_ID);
break;
}
case HSA_AMD_SYSTEM_INFO_SVM_SUPPORTED: {
bool ret = true;
for (auto agent : gpu_agents_) {
AMD::GpuAgent* gpu = (AMD::GpuAgent*)agent;
ret &= (gpu->properties().Capability.ui32.SVMAPISupported == 1);
}
*(bool*)value = ret;
break;
}
case HSA_AMD_SYSTEM_INFO_SVM_ACCESSIBLE_BY_DEFAULT: {
bool ret = true;
for(auto agent : gpu_agents_)
ret &= (agent->isa()->GetXnack() == IsaFeature::Enabled);
*(bool*)value = ret;
break;
}
default:
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
}
return HSA_STATUS_SUCCESS;
}
hsa_status_t Runtime::SetAsyncSignalHandler(hsa_signal_t signal,
hsa_signal_condition_t cond,
hsa_signal_value_t value,
hsa_amd_signal_handler handler,
void* arg) {
// Indicate that this signal is in use.
if (signal.handle != 0) hsa_signal_handle(signal)->Retain();
ScopedAcquire<KernelMutex> scope_lock(&async_events_control_.lock);
// Lazy initializer
if (async_events_control_.async_events_thread_ == NULL) {
// Create monitoring thread control signal
auto err = HSA::hsa_signal_create(0, 0, NULL, &async_events_control_.wake);
if (err != HSA_STATUS_SUCCESS) {
assert(false && "Asyncronous events control signal creation error.");
return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
}
async_events_.PushBack(async_events_control_.wake, HSA_SIGNAL_CONDITION_NE,
0, NULL, NULL);
// Start event monitoring thread
async_events_control_.exit = false;
async_events_control_.async_events_thread_ =
os::CreateThread(AsyncEventsLoop, NULL);
if (async_events_control_.async_events_thread_ == NULL) {
assert(false && "Asyncronous events thread creation error.");
return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
}
}
new_async_events_.PushBack(signal, cond, value, handler, arg);
hsa_signal_handle(async_events_control_.wake)->StoreRelease(1);
return HSA_STATUS_SUCCESS;
}
hsa_status_t Runtime::InteropMap(uint32_t num_agents, Agent** agents,
int interop_handle, uint32_t flags,
size_t* size, void** ptr,
size_t* metadata_size, const void** metadata) {
static const int tinyArraySize=8;
HsaGraphicsResourceInfo info;
HSAuint32 short_nodes[tinyArraySize];
HSAuint32* nodes = short_nodes;
if (num_agents > tinyArraySize) {
nodes = new HSAuint32[num_agents];
if (nodes == NULL) return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
}
MAKE_SCOPE_GUARD([&]() {
if (num_agents > tinyArraySize) delete[] nodes;
});
for (uint32_t i = 0; i < num_agents; i++)
agents[i]->GetInfo((hsa_agent_info_t)HSA_AMD_AGENT_INFO_DRIVER_NODE_ID,
&nodes[i]);
if (hsaKmtRegisterGraphicsHandleToNodes(interop_handle, &info, num_agents,
nodes) != HSAKMT_STATUS_SUCCESS)
return HSA_STATUS_ERROR;
HSAuint64 altAddress;
HsaMemMapFlags map_flags;
map_flags.Value = 0;
map_flags.ui32.PageSize = HSA_PAGE_SIZE_64KB;
if (hsaKmtMapMemoryToGPUNodes(info.MemoryAddress, info.SizeInBytes,
&altAddress, map_flags, num_agents,
nodes) != HSAKMT_STATUS_SUCCESS) {
map_flags.ui32.PageSize = HSA_PAGE_SIZE_4KB;
if (hsaKmtMapMemoryToGPUNodes(info.MemoryAddress, info.SizeInBytes, &altAddress, map_flags,
num_agents, nodes) != HSAKMT_STATUS_SUCCESS) {
hsaKmtDeregisterMemory(info.MemoryAddress);
return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
}
}
if (metadata_size != NULL) *metadata_size = info.MetadataSizeInBytes;
if (metadata != NULL) *metadata = info.Metadata;
*size = info.SizeInBytes;
*ptr = info.MemoryAddress;
return HSA_STATUS_SUCCESS;
}
hsa_status_t Runtime::InteropUnmap(void* ptr) {
if(hsaKmtUnmapMemoryToGPU(ptr)!=HSAKMT_STATUS_SUCCESS)
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
if(hsaKmtDeregisterMemory(ptr)!=HSAKMT_STATUS_SUCCESS)
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
return HSA_STATUS_SUCCESS;
}
hsa_status_t Runtime::PtrInfo(void* ptr, hsa_amd_pointer_info_t* info, void* (*alloc)(size_t),
uint32_t* num_agents_accessible, hsa_agent_t** accessible,
PtrInfoBlockData* block_info) {
static_assert(static_cast<int>(HSA_POINTER_UNKNOWN) == static_cast<int>(HSA_EXT_POINTER_TYPE_UNKNOWN),
"Thunk pointer info mismatch");
static_assert(static_cast<int>(HSA_POINTER_ALLOCATED) == static_cast<int>(HSA_EXT_POINTER_TYPE_HSA),
"Thunk pointer info mismatch");
static_assert(static_cast<int>(HSA_POINTER_REGISTERED_USER) == static_cast<int>(HSA_EXT_POINTER_TYPE_LOCKED),
"Thunk pointer info mismatch");
static_assert(static_cast<int>(HSA_POINTER_REGISTERED_GRAPHICS) == static_cast<int>(HSA_EXT_POINTER_TYPE_GRAPHICS),
"Thunk pointer info mismatch");
HsaPointerInfo thunkInfo;
uint32_t* mappedNodes;
hsa_amd_pointer_info_t retInfo;
// check output struct has an initialized size.
if (info->size == 0) return HSA_STATUS_ERROR_INVALID_ARGUMENT;
bool returnListData =
((alloc != nullptr) && (num_agents_accessible != nullptr) && (accessible != nullptr));
{ // memory_lock protects access to the NMappedNodes array and fragment user data since these may
// change with calls to memory APIs.
ScopedAcquire<KernelMutex> lock(&memory_lock_);
// We don't care if this returns an error code.
// The type will be HSA_EXT_POINTER_TYPE_UNKNOWN if so.
auto err = hsaKmtQueryPointerInfo(ptr, &thunkInfo);
assert(((err == HSAKMT_STATUS_SUCCESS) || (thunkInfo.Type == HSA_POINTER_UNKNOWN)) &&
"Thunk ptr info error and not type HSA_POINTER_UNKNOWN.");
if (returnListData) {
assert(thunkInfo.NMappedNodes <= agents_by_node_.size() &&
"PointerInfo: Thunk returned more than all agents in NMappedNodes.");
mappedNodes = (uint32_t*)alloca(thunkInfo.NMappedNodes * sizeof(uint32_t));
memcpy(mappedNodes, thunkInfo.MappedNodes, thunkInfo.NMappedNodes * sizeof(uint32_t));
}
retInfo.type = (hsa_amd_pointer_type_t)thunkInfo.Type;
retInfo.agentBaseAddress = reinterpret_cast<void*>(thunkInfo.GPUAddress);
retInfo.hostBaseAddress = thunkInfo.CPUAddress;
retInfo.sizeInBytes = thunkInfo.SizeInBytes;
retInfo.userData = thunkInfo.UserData;
if (block_info != nullptr) {
// Block_info reports the thunk allocation from which we may have suballocated.
// For locked memory we want to return the host address since hostBaseAddress is used to
// manipulate locked memory and it is possible that hostBaseAddress is different from
// agentBaseAddress.
// For device memory, hostBaseAddress is either equal to agentBaseAddress or is NULL when the
// CPU does not have access.
assert((retInfo.hostBaseAddress || retInfo.agentBaseAddress) && "Thunk pointer info returned no base address.");
block_info->base = (retInfo.hostBaseAddress ? retInfo.hostBaseAddress : retInfo.agentBaseAddress);
block_info->length = retInfo.sizeInBytes;
}
auto fragment = allocation_map_.upper_bound(ptr);
if (fragment != allocation_map_.begin()) {
fragment--;
if ((fragment->first <= ptr) &&
(ptr < reinterpret_cast<const uint8_t*>(fragment->first) + fragment->second.size)) {
// agent and host address must match here. Only lock memory is allowed to have differing
// addresses but lock memory has type HSA_EXT_POINTER_TYPE_LOCKED and cannot be
// suballocated.
retInfo.agentBaseAddress = const_cast<void*>(fragment->first);
retInfo.hostBaseAddress = retInfo.agentBaseAddress;
retInfo.sizeInBytes = fragment->second.size;
retInfo.userData = fragment->second.user_ptr;
}
}
} // end lock scope
retInfo.size = Min(size_t(info->size), sizeof(hsa_amd_pointer_info_t));
// IPC and Graphics memory may come from a node that does not have an agent in this process.
// Ex. ROCR_VISIBLE_DEVICES or peer GPU is not supported by ROCm.
auto nodeAgents = agents_by_node_.find(thunkInfo.Node);
if (nodeAgents != agents_by_node_.end())
retInfo.agentOwner = nodeAgents->second[0]->public_handle();
else
retInfo.agentOwner.handle = 0;
// Correct agentOwner for locked memory. Thunk reports the GPU that owns the
// alias but users are expecting to see a CPU when the memory is system.
if (retInfo.type == HSA_EXT_POINTER_TYPE_LOCKED) {
if ((nodeAgents == agents_by_node_.end()) ||
(nodeAgents->second[0]->device_type() != core::Agent::kAmdCpuDevice)) {
retInfo.agentOwner = cpu_agents_[0]->public_handle();
}
}
memcpy(info, &retInfo, retInfo.size);
if (returnListData) {
uint32_t count = 0;
for (HSAuint32 i = 0; i < thunkInfo.NMappedNodes; i++) {
assert(mappedNodes[i] < agents_by_node_.size() &&
"PointerInfo: Invalid node ID returned from thunk.");
count += agents_by_node_[mappedNodes[i]].size();
}
AMD::callback_t<decltype(alloc)> Alloc(alloc);
*accessible = (hsa_agent_t*)Alloc(sizeof(hsa_agent_t) * count);
if ((*accessible) == nullptr) return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
*num_agents_accessible = count;
uint32_t index = 0;
for (HSAuint32 i = 0; i < thunkInfo.NMappedNodes; i++) {
auto& list = agents_by_node_[mappedNodes[i]];
for (auto agent : list) {
(*accessible)[index] = agent->public_handle();
index++;
}
}
}
return HSA_STATUS_SUCCESS;
}
hsa_status_t Runtime::SetPtrInfoData(void* ptr, void* userptr) {
{ // Use allocation map if possible to handle fragments.
ScopedAcquire<KernelMutex> lock(&memory_lock_);
const auto& it = allocation_map_.find(ptr);
if (it != allocation_map_.end()) {
it->second.user_ptr = userptr;
return HSA_STATUS_SUCCESS;
}
}
// Cover entries not in the allocation map (graphics, lock,...)
if (hsaKmtSetMemoryUserData(ptr, userptr) == HSAKMT_STATUS_SUCCESS)
return HSA_STATUS_SUCCESS;
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
}
hsa_status_t Runtime::IPCCreate(void* ptr, size_t len, hsa_amd_ipc_memory_t* handle) {
static_assert(sizeof(hsa_amd_ipc_memory_t) == sizeof(HsaSharedMemoryHandle),
"Thunk IPC mismatch.");
// Reject sharing allocations larger than ~8TB due to thunk limitations.
if (len > 0x7FFFFFFF000ull) return HSA_STATUS_ERROR_INVALID_ARGUMENT;
// Check for fragment sharing.
PtrInfoBlockData block;
hsa_amd_pointer_info_t info;
info.size = sizeof(info);
if (PtrInfo(ptr, &info, nullptr, nullptr, nullptr, &block) != HSA_STATUS_SUCCESS)
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
if ((info.agentBaseAddress != ptr) || (info.sizeInBytes != len))
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
if ((block.base != ptr) || (block.length != len)) {
if (!IsMultipleOf(block.base, 2 * 1024 * 1024)) {
assert(false && "Fragment's block not aligned to 2MB!");
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
}
if (hsaKmtShareMemory(block.base, block.length, reinterpret_cast<HsaSharedMemoryHandle*>(
handle)) != HSAKMT_STATUS_SUCCESS)
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
uint32_t offset =
(reinterpret_cast<uint8_t*>(ptr) - reinterpret_cast<uint8_t*>(block.base)) / 4096;
// Holds size in (4K?) pages in thunk handle: Mark as a fragment and denote offset.
handle->handle[6] |= 0x80000000 | offset;
// Mark block for IPC. Prevents reallocation of exported memory.
ScopedAcquire<KernelMutex> lock(&memory_lock_);
hsa_status_t err = allocation_map_[ptr].region->IPCFragmentExport(ptr);
assert(err == HSA_STATUS_SUCCESS && "Region inconsistent with address map.");
return err;
} else {
if (hsaKmtShareMemory(ptr, len, reinterpret_cast<HsaSharedMemoryHandle*>(handle)) !=
HSAKMT_STATUS_SUCCESS)
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
}
return HSA_STATUS_SUCCESS;
}
hsa_status_t Runtime::IPCAttach(const hsa_amd_ipc_memory_t* handle, size_t len, uint32_t num_agents,
Agent** agents, void** mapped_ptr) {
static const int tinyArraySize = 8;
void* importAddress;
HSAuint64 importSize;
HSAuint64 altAddress;
hsa_amd_ipc_memory_t importHandle;
importHandle = *handle;
// Extract fragment info
bool isFragment = false;
uint32_t fragOffset = 0;
auto fixFragment = [&]() {
if (!isFragment) return;
importAddress = reinterpret_cast<uint8_t*>(importAddress) + fragOffset;
len = Min(len, importSize - fragOffset);
ScopedAcquire<KernelMutex> lock(&memory_lock_);
allocation_map_[importAddress] = AllocationRegion(nullptr, len);
};
if ((importHandle.handle[6] & 0x80000000) != 0) {
isFragment = true;
fragOffset = (importHandle.handle[6] & 0x1FF) * 4096;
importHandle.handle[6] &= ~(0x80000000 | 0x1FF);
}
if (num_agents == 0) {
if (hsaKmtRegisterSharedHandle(reinterpret_cast<const HsaSharedMemoryHandle*>(&importHandle),
&importAddress, &importSize) != HSAKMT_STATUS_SUCCESS)
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
if (hsaKmtMapMemoryToGPU(importAddress, importSize, &altAddress) != HSAKMT_STATUS_SUCCESS) {
hsaKmtDeregisterMemory(importAddress);
return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
}
fixFragment();
*mapped_ptr = importAddress;
return HSA_STATUS_SUCCESS;
}
HSAuint32* nodes = nullptr;
if (num_agents > tinyArraySize)
nodes = new HSAuint32[num_agents];
else
nodes = (HSAuint32*)alloca(sizeof(HSAuint32) * num_agents);
if (nodes == NULL) return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
MAKE_SCOPE_GUARD([&]() {
if (num_agents > tinyArraySize) delete[] nodes;
});
for (uint32_t i = 0; i < num_agents; i++)
agents[i]->GetInfo((hsa_agent_info_t)HSA_AMD_AGENT_INFO_DRIVER_NODE_ID, &nodes[i]);
if (hsaKmtRegisterSharedHandleToNodes(
reinterpret_cast<const HsaSharedMemoryHandle*>(&importHandle), &importAddress,
&importSize, num_agents, nodes) != HSAKMT_STATUS_SUCCESS)
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
HsaMemMapFlags map_flags;
map_flags.Value = 0;
map_flags.ui32.PageSize = HSA_PAGE_SIZE_64KB;
if (hsaKmtMapMemoryToGPUNodes(importAddress, importSize, &altAddress, map_flags, num_agents,
nodes) != HSAKMT_STATUS_SUCCESS) {
map_flags.ui32.PageSize = HSA_PAGE_SIZE_4KB;
if (hsaKmtMapMemoryToGPUNodes(importAddress, importSize, &altAddress, map_flags, num_agents,
nodes) != HSAKMT_STATUS_SUCCESS) {
hsaKmtDeregisterMemory(importAddress);
return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
}
}
fixFragment();
*mapped_ptr = importAddress;
return HSA_STATUS_SUCCESS;
}
hsa_status_t Runtime::IPCDetach(void* ptr) {
{ // Handle imported fragments.
ScopedAcquire<KernelMutex> lock(&memory_lock_);
const auto& it = allocation_map_.find(ptr);
if (it != allocation_map_.end()) {
if (it->second.region != nullptr) return HSA_STATUS_ERROR_INVALID_ARGUMENT;
allocation_map_.erase(it);
lock.Release(); // Can't hold memory lock when using pointer info.
PtrInfoBlockData block;
hsa_amd_pointer_info_t info;
info.size = sizeof(info);
if (PtrInfo(ptr, &info, nullptr, nullptr, nullptr, &block) != HSA_STATUS_SUCCESS)
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
ptr = block.base;
}
}
if (hsaKmtUnmapMemoryToGPU(ptr) != HSAKMT_STATUS_SUCCESS)
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
if (hsaKmtDeregisterMemory(ptr) != HSAKMT_STATUS_SUCCESS)
return HSA_STATUS_ERROR_INVALID_ARGUMENT;
return HSA_STATUS_SUCCESS;
}
void Runtime::AsyncEventsLoop(void*) {
auto& async_events_control_ = runtime_singleton_->async_events_control_;
auto& async_events_ = runtime_singleton_->async_events_;
auto& new_async_events_ = runtime_singleton_->new_async_events_;
while (!async_events_control_.exit) {
// Wait for a signal
hsa_signal_value_t value;
uint32_t index = AMD::hsa_amd_signal_wait_any(
uint32_t(async_events_.Size()), &async_events_.signal_[0],
&async_events_.cond_[0], &async_events_.value_[0], uint64_t(-1),
HSA_WAIT_STATE_BLOCKED, &value);
// Reset the control signal
if (index == 0) {
hsa_signal_handle(async_events_control_.wake)->StoreRelaxed(0);
} else if (index != -1) {
// No error or timout occured, process the handlers
for (size_t i = index; i < async_events_.Size(); i++) {
hsa_signal_handle sig(async_events_.signal_[i]);
value = atomic::Load(&sig->signal_.value, std::memory_order_relaxed);
bool condition_met = false;
switch (async_events_.cond_[i]) {
case HSA_SIGNAL_CONDITION_EQ: {
condition_met = (value == async_events_.value_[i]);
break;
}
case HSA_SIGNAL_CONDITION_NE: {
condition_met = (value != async_events_.value_[i]);
break;
}
case HSA_SIGNAL_CONDITION_GTE: {
condition_met = (value >= async_events_.value_[i]);
break;
}
case HSA_SIGNAL_CONDITION_LT: {
condition_met = (value < async_events_.value_[i]);
break;
}
}
if (condition_met) {
assert(async_events_.handler_[i] != NULL);
bool keep = async_events_.handler_[i](value, async_events_.arg_[i]);
if (!keep) {
hsa_signal_handle(async_events_.signal_[i])->Release();
async_events_.CopyIndex(i, async_events_.Size() - 1);
async_events_.PopBack();
i--;
}
}
}
}
// Check for dead signals
index = 0;
while (index != async_events_.Size()) {
if (!hsa_signal_handle(async_events_.signal_[index])->IsValid()) {
hsa_signal_handle(async_events_.signal_[index])->Release();
async_events_.CopyIndex(index, async_events_.Size() - 1);
async_events_.PopBack();
continue;
}
index++;
}
// Insert new signals and find plain functions
typedef std::pair<void (*)(void*), void*> func_arg_t;
std::vector<func_arg_t> functions;
{
ScopedAcquire<KernelMutex> scope_lock(&async_events_control_.lock);
for (size_t i = 0; i < new_async_events_.Size(); i++) {
if (new_async_events_.signal_[i].handle == 0) {
functions.push_back(
func_arg_t((void (*)(void*))new_async_events_.handler_[i],
new_async_events_.arg_[i]));
continue;
}
async_events_.PushBack(
new_async_events_.signal_[i], new_async_events_.cond_[i],
new_async_events_.value_[i], new_async_events_.handler_[i],
new_async_events_.arg_[i]);
}
new_async_events_.Clear();
}
// Call plain functions
for (size_t i = 0; i < functions.size(); i++)
functions[i].first(functions[i].second);
functions.clear();
}
// Release wait count of all pending signals
for (size_t i = 1; i < async_events_.Size(); i++)
hsa_signal_handle(async_events_.signal_[i])->Release();
async_events_.Clear();
for (size_t i = 0; i < new_async_events_.Size(); i++)
hsa_signal_handle(new_async_events_.signal_[i])->Release();
new_async_events_.Clear();
}
void Runtime::BindVmFaultHandler() {
if (core::g_use_interrupt_wait && !gpu_agents_.empty()) {
// Create memory event with manual reset to avoid racing condition
// with driver in case of multiple concurrent VM faults.
vm_fault_event_ =
core::InterruptSignal::CreateEvent(HSA_EVENTTYPE_MEMORY, true);
// Create an interrupt signal object to contain the memory event.
// This signal object will be registered with the async handler global
// thread.
vm_fault_signal_ = new core::InterruptSignal(0, vm_fault_event_);
if (!vm_fault_signal_->IsValid() || vm_fault_signal_->EopEvent() == NULL) {
assert(false && "Failed on creating VM fault signal");
return;
}
SetAsyncSignalHandler(core::Signal::Convert(vm_fault_signal_),
HSA_SIGNAL_CONDITION_NE, 0, VMFaultHandler,
reinterpret_cast<void*>(vm_fault_signal_));
}
}
bool Runtime::VMFaultHandler(hsa_signal_value_t val, void* arg) {
core::InterruptSignal* vm_fault_signal =
reinterpret_cast<core::InterruptSignal*>(arg);
assert(vm_fault_signal != NULL);
if (vm_fault_signal == NULL) {
return false;
}
HsaEvent* vm_fault_event = vm_fault_signal->EopEvent();
HsaMemoryAccessFault& fault =
vm_fault_event->EventData.EventData.MemoryAccessFault;
hsa_status_t custom_handler_status = HSA_STATUS_ERROR;
auto system_event_handlers = runtime_singleton_->GetSystemEventHandlers();
// If custom handler is registered, pack the fault info and call the handler
if (!system_event_handlers.empty()) {
hsa_amd_event_t memory_fault_event;
memory_fault_event.event_type = HSA_AMD_GPU_MEMORY_FAULT_EVENT;
hsa_amd_gpu_memory_fault_info_t& fault_info = memory_fault_event.memory_fault;
// Find the faulty agent
auto it = runtime_singleton_->agents_by_node_.find(fault.NodeId);
assert(it != runtime_singleton_->agents_by_node_.end() && "Can't find faulty agent.");
Agent* faulty_agent = it->second.front();
fault_info.agent = Agent::Convert(faulty_agent);
fault_info.virtual_address = fault.VirtualAddress;
fault_info.fault_reason_mask = 0;
if (fault.Failure.NotPresent == 1) {
fault_info.fault_reason_mask |= HSA_AMD_MEMORY_FAULT_PAGE_NOT_PRESENT;
}
if (fault.Failure.ReadOnly == 1) {
fault_info.fault_reason_mask |= HSA_AMD_MEMORY_FAULT_READ_ONLY;
}
if (fault.Failure.NoExecute == 1) {
fault_info.fault_reason_mask |= HSA_AMD_MEMORY_FAULT_NX;
}
if (fault.Failure.GpuAccess == 1) {
fault_info.fault_reason_mask |= HSA_AMD_MEMORY_FAULT_HOST_ONLY;
}
if (fault.Failure.Imprecise == 1) {
fault_info.fault_reason_mask |= HSA_AMD_MEMORY_FAULT_IMPRECISE;
}
if (fault.Failure.ECC == 1 && fault.Failure.ErrorType == 0) {
fault_info.fault_reason_mask |= HSA_AMD_MEMORY_FAULT_DRAMECC;
}
if (fault.Failure.ErrorType == 1) {
fault_info.fault_reason_mask |= HSA_AMD_MEMORY_FAULT_SRAMECC;
}
if (fault.Failure.ErrorType == 2) {
fault_info.fault_reason_mask |= HSA_AMD_MEMORY_FAULT_DRAMECC;
}
if (fault.Failure.ErrorType == 3) {
fault_info.fault_reason_mask |= HSA_AMD_MEMORY_FAULT_HANG;
}
for (auto& callback : system_event_handlers) {
hsa_status_t err = callback.first(&memory_fault_event, callback.second);
if (err == HSA_STATUS_SUCCESS) custom_handler_status = HSA_STATUS_SUCCESS;
}
}
// No custom VM fault handler registered or it failed.
if (custom_handler_status != HSA_STATUS_SUCCESS) {
if (runtime_singleton_->flag().enable_vm_fault_message()) {
std::string reason = "";
if (fault.Failure.NotPresent == 1) {
reason += "Page not present or supervisor privilege";
} else if (fault.Failure.ReadOnly == 1) {
reason += "Write access to a read-only page";
} else if (fault.Failure.NoExecute == 1) {
reason += "Execute access to a page marked NX";
} else if (fault.Failure.GpuAccess == 1) {
reason += "Host access only";
} else if ((fault.Failure.ECC == 1 && fault.Failure.ErrorType == 0) ||
fault.Failure.ErrorType == 2) {
reason += "DRAM ECC failure";
} else if (fault.Failure.ErrorType == 1) {
reason += "SRAM ECC failure";
} else if (fault.Failure.ErrorType == 3) {
reason += "Generic hang recovery";
} else {
reason += "Unknown";
}
core::Agent* faultingAgent = runtime_singleton_->agents_by_node_[fault.NodeId][0];
fprintf(
stderr,
"Memory access fault by GPU node-%u (Agent handle: %p) on address %p%s. Reason: %s.\n",
fault.NodeId, reinterpret_cast<void*>(faultingAgent->public_handle().handle),
reinterpret_cast<const void*>(fault.VirtualAddress),
(fault.Failure.Imprecise == 1) ? "(may not be exact address)" : "", reason.c_str());
#ifndef NDEBUG
PrintMemoryMapNear(reinterpret_cast<void*>(fault.VirtualAddress));
#endif
}
assert(false && "GPU memory access fault.");
std::abort();
}
// No need to keep the signal because we are done.
return false;
}
void Runtime::PrintMemoryMapNear(void* ptr) {
runtime_singleton_->memory_lock_.Acquire();
auto it = runtime_singleton_->allocation_map_.upper_bound(ptr);
for (int i = 0; i < 2; i++) {
if (it != runtime_singleton_->allocation_map_.begin()) it--;
}
fprintf(stderr, "Nearby memory map:\n");
auto start = it;
for (int i = 0; i < 3; i++) {
if (it == runtime_singleton_->allocation_map_.end()) break;
std::string kind = "Non-HSA";
if (it->second.region != nullptr) {
const AMD::MemoryRegion* region = static_cast<const AMD::MemoryRegion*>(it->second.region);
if (region->IsSystem())
kind = "System";
else if (region->IsLocalMemory())
kind = "VRAM";
else if (region->IsScratch())
kind = "Scratch";
else if (region->IsLDS())
kind = "LDS";
}
fprintf(stderr, "%p, 0x%lx, %s\n", it->first, it->second.size, kind.c_str());
it++;
}
fprintf(stderr, "\n");
it = start;
runtime_singleton_->memory_lock_.Release();
hsa_amd_pointer_info_t info;
PtrInfoBlockData block;
uint32_t count;
hsa_agent_t* canAccess;
info.size = sizeof(info);
for (int i = 0; i < 3; i++) {
if (it == runtime_singleton_->allocation_map_.end()) break;
runtime_singleton_->PtrInfo(const_cast<void*>(it->first), &info, malloc, &count, &canAccess,
&block);
fprintf(stderr, "PtrInfo:\n\tAddress: %p-%p/%p-%p\n\tSize: 0x%lx\n\tType: %u\n\tOwner: %p\n",
info.agentBaseAddress, (char*)info.agentBaseAddress + info.sizeInBytes,
info.hostBaseAddress, (char*)info.hostBaseAddress + info.sizeInBytes, info.sizeInBytes,
info.type, reinterpret_cast<void*>(info.agentOwner.handle));
fprintf(stderr, "\tCanAccess: %u\n", count);
for (int t = 0; t < count; t++)
fprintf(stderr, "\t\t%p\n", reinterpret_cast<void*>(canAccess[t].handle));
fprintf(stderr, "\tIn block: %p, 0x%lx\n", block.base, block.length);
free(canAccess);
it++;
}
}
Runtime::Runtime()
: region_gpu_(nullptr),
sys_clock_freq_(0),
vm_fault_event_(nullptr),
vm_fault_signal_(nullptr),
ref_count_(0),
kfd_version{0} {}
hsa_status_t Runtime::Load() {
flag_.Refresh();
g_use_interrupt_wait = flag_.enable_interrupt();
if (!AMD::Load()) {
return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
}
// Setup system clock frequency for the first time.
if (sys_clock_freq_ == 0) {
// Cache system clock frequency
HsaClockCounters clocks;
hsaKmtGetClockCounters(0, &clocks);
sys_clock_freq_ = clocks.SystemClockFrequencyHz;
}
BindVmFaultHandler();
loader_ = amd::hsa::loader::Loader::Create(&loader_context_);
// Load extensions
LoadExtensions();
// Initialize per GPU scratch, blits, and trap handler
for (core::Agent* agent : gpu_agents_) {
hsa_status_t status =
reinterpret_cast<AMD::GpuAgentInt*>(agent)->PostToolsInit();
if (status != HSA_STATUS_SUCCESS) {
return status;
}
}
// Load tools libraries
LoadTools();
return HSA_STATUS_SUCCESS;
}
void Runtime::Unload() {
UnloadTools();
UnloadExtensions();
amd::hsa::loader::Loader::Destroy(loader_);
loader_ = nullptr;
std::for_each(gpu_agents_.begin(), gpu_agents_.end(), DeleteObject());
gpu_agents_.clear();
async_events_control_.Shutdown();
if (vm_fault_signal_ != nullptr) {
vm_fault_signal_->DestroySignal();
vm_fault_signal_ = nullptr;
}
core::InterruptSignal::DestroyEvent(vm_fault_event_);
vm_fault_event_ = nullptr;
SharedSignalPool.clear();
EventPool.clear();
DestroyAgents();
CloseTools();
AMD::Unload();
}
void Runtime::LoadExtensions() {
// Load finalizer and extension library
#ifdef HSA_LARGE_MODEL
static const std::string kFinalizerLib[] = {"hsa-ext-finalize64.dll",
"libhsa-ext-finalize64.so.1"};
#else
static const std::string kFinalizerLib[] = {"hsa-ext-finalize.dll",
"libhsa-ext-finalize.so.1"};
#endif
// Update Hsa Api Table with handle of Finalizer extension Apis
// Skipping finalizer loading since finalizer is no longer distributed.
// LinkExts will expose the finalizer-not-present implementation.
// extensions_.LoadFinalizer(kFinalizerLib[os_index(os::current_os)]);
hsa_api_table_.LinkExts(&extensions_.finalizer_api,
core::HsaApiTable::HSA_EXT_FINALIZER_API_TABLE_ID);
// Update Hsa Api Table with handle of Image extension Apis
extensions_.LoadImage();
hsa_api_table_.LinkExts(&extensions_.image_api,
core::HsaApiTable::HSA_EXT_IMAGE_API_TABLE_ID);
}
void Runtime::UnloadExtensions() { extensions_.Unload(); }
static std::vector<std::string> parse_tool_names(std::string tool_names) {
std::vector<std::string> names;
std::string name = "";
bool quoted = false;
while (tool_names.size() != 0) {
auto index = tool_names.find_first_of(" \"\\");
if (index == std::string::npos) {
name += tool_names;
break;
}
switch (tool_names[index]) {
case ' ': {
if (!quoted) {
name += tool_names.substr(0, index);
tool_names.erase(0, index + 1);
names.push_back(name);
name = "";
} else {
name += tool_names.substr(0, index + 1);
tool_names.erase(0, index + 1);
}
break;
}
case '\"': {
if (quoted) {
quoted = false;
name += tool_names.substr(0, index);
tool_names.erase(0, index + 1);
names.push_back(name);
name = "";
} else {
quoted = true;
tool_names.erase(0, index + 1);
}
break;
}
case '\\': {
if (tool_names.size() > index + 1) {
name += tool_names.substr(0, index) + tool_names[index + 1];
tool_names.erase(0, index + 2);
}
break;
}
} // end switch
} // end while
if (name != "") names.push_back(name);
return names;
}
void Runtime::LoadTools() {
typedef bool (*tool_init_t)(::HsaApiTable*, uint64_t, uint64_t,
const char* const*);
typedef Agent* (*tool_wrap_t)(Agent*);
typedef void (*tool_add_t)(Runtime*);
// Load tool libs
std::string tool_names = flag_.tools_lib_names();
if (tool_names != "") {
std::vector<std::string> names = parse_tool_names(tool_names);
std::vector<const char*> failed;
for (auto& name : names) {
os::LibHandle tool = os::LoadLib(name);
if (tool != NULL) {
tool_libs_.push_back(tool);
rocr::AMD::callback_t<tool_init_t> ld = (tool_init_t)os::GetExportAddress(tool, "OnLoad");
if (ld) {
if (!ld(&hsa_api_table_.hsa_api,
hsa_api_table_.hsa_api.version.major_id,
failed.size(), &failed[0])) {
failed.push_back(name.c_str());
os::CloseLib(tool);
continue;
}
}
rocr::AMD::callback_t<tool_wrap_t> wrap =
(tool_wrap_t)os::GetExportAddress(tool, "WrapAgent");
if (wrap) {
std::vector<core::Agent*>* agent_lists[2] = {&cpu_agents_,
&gpu_agents_};
for (std::vector<core::Agent*>* agent_list : agent_lists) {
for (size_t agent_idx = 0; agent_idx < agent_list->size();
++agent_idx) {
Agent* agent = wrap(agent_list->at(agent_idx));
if (agent != NULL) {
assert(agent->IsValid() &&
"Agent returned from WrapAgent is not valid");
agent_list->at(agent_idx) = agent;
}
}
}
}
rocr::AMD::callback_t<tool_add_t> add = (tool_add_t)os::GetExportAddress(tool, "AddAgent");
if (add) add(this);
}
else {
if (flag().report_tool_load_failures())
fprintf(stderr, "Tool lib \"%s\" failed to load.\n", name.c_str());
}
}
}
}
void Runtime::UnloadTools() {
typedef void (*tool_unload_t)();
for (size_t i = tool_libs_.size(); i != 0; i--) {
tool_unload_t unld;
unld = (tool_unload_t)os::GetExportAddress(tool_libs_[i - 1], "OnUnload");
if (unld) unld();
}
// Reset API table in case some tool doesn't cleanup properly
hsa_api_table_.Reset();
}
void Runtime::CloseTools() {
// Due to valgrind bug, runtime cannot dlclose extensions see:
// http://valgrind.org/docs/manual/faq.html#faq.unhelpful
if (!flag_.running_valgrind()) {
for (auto& lib : tool_libs_) os::CloseLib(lib);
}
tool_libs_.clear();
}
void Runtime::AsyncEventsControl::Shutdown() {
if (async_events_thread_ != NULL) {
exit = true;
hsa_signal_handle(wake)->StoreRelaxed(1);
os::WaitForThread(async_events_thread_);
os::CloseThread(async_events_thread_);
async_events_thread_ = NULL;
HSA::hsa_signal_destroy(wake);
}
}
void Runtime::AsyncEvents::PushBack(hsa_signal_t signal,
hsa_signal_condition_t cond,
hsa_signal_value_t value,
hsa_amd_signal_handler handler, void* arg) {
signal_.push_back(signal);
cond_.push_back(cond);
value_.push_back(value);
handler_.push_back(handler);
arg_.push_back(arg);
}
void Runtime::AsyncEvents::CopyIndex(size_t dst, size_t src) {
signal_[dst] = signal_[src];
cond_[dst] = cond_[src];
value_[dst] = value_[src];
handler_[dst] = handler_[src];
arg_[dst] = arg_[src];
}
size_t Runtime::AsyncEvents::Size() { return signal_.size(); }
void Runtime::AsyncEvents::PopBack() {
signal_.pop_back();
cond_.pop_back();
value_.pop_back();
handler_.pop_back();
arg_.pop_back();
}
void Runtime::AsyncEvents::Clear() {
signal_.clear();
cond_.clear();
value_.clear();
handler_.clear();
arg_.clear();
}
hsa_status_t Runtime::SetCustomSystemEventHandler(hsa_amd_system_event_callback_t callback,
void* data) {
ScopedAcquire<KernelMutex> lock(&system_event_lock_);
system_event_handlers_.push_back(
std::make_pair(AMD::callback_t<hsa_amd_system_event_callback_t>(callback), data));
return HSA_STATUS_SUCCESS;
}
std::vector<std::pair<AMD::callback_t<hsa_amd_system_event_callback_t>, void*>>
Runtime::GetSystemEventHandlers() {
ScopedAcquire<KernelMutex> lock(&system_event_lock_);
return system_event_handlers_;
}
hsa_status_t Runtime::SetInternalQueueCreateNotifier(hsa_amd_runtime_queue_notifier callback,
void* user_data) {
if (internal_queue_create_notifier_) {
return HSA_STATUS_ERROR;
} else {
internal_queue_create_notifier_ = callback;
internal_queue_create_notifier_user_data_ = user_data;
return HSA_STATUS_SUCCESS;
}
}
void Runtime::InternalQueueCreateNotify(const hsa_queue_t* queue, hsa_agent_t agent) {
if (internal_queue_create_notifier_)
internal_queue_create_notifier_(queue, agent, internal_queue_create_notifier_user_data_);
}
hsa_status_t Runtime::SetSvmAttrib(void* ptr, size_t size,
hsa_amd_svm_attribute_pair_t* attribute_list,
size_t attribute_count) {
uint32_t set_attribs = 0;
std::vector<bool> agent_seen(agents_by_node_.size(), false);
std::vector<HSA_SVM_ATTRIBUTE> attribs;
attribs.reserve(attribute_count);
uint32_t set_flags = 0;
uint32_t clear_flags = 0;
auto Convert = [&](uint64_t value) -> Agent* {
hsa_agent_t handle = {value};
Agent* agent = Agent::Convert(handle);
if ((agent == nullptr) || !agent->IsValid())
throw AMD::hsa_exception(HSA_STATUS_ERROR_INVALID_AGENT,
"Invalid agent handle in Runtime::SetSvmAttrib.");
return agent;
};
auto ConvertAllowNull = [&](uint64_t value) -> Agent* {
hsa_agent_t handle = {value};
Agent* agent = Agent::Convert(handle);
if ((agent != nullptr) && (!agent->IsValid()))
throw AMD::hsa_exception(HSA_STATUS_ERROR_INVALID_AGENT,
"Invalid agent handle in Runtime::SetSvmAttrib.");
return agent;
};
auto ConfirmNew = [&](Agent* agent) {
if (agent_seen[agent->node_id()])
throw AMD::hsa_exception(
HSA_STATUS_ERROR_INCOMPATIBLE_ARGUMENTS,
"Multiple attributes given for the same agent in Runtime::SetSvmAttrib.");
agent_seen[agent->node_id()] = true;
};
auto Check = [&](uint64_t attrib) {
if (set_attribs & (1 << attrib))
throw AMD::hsa_exception(HSA_STATUS_ERROR_INCOMPATIBLE_ARGUMENTS,
"Attribute given multiple times in Runtime::SetSvmAttrib.");
set_attribs |= (1 << attrib);
};
auto kmtPair = [](uint32_t attrib, uint32_t value) {
HSA_SVM_ATTRIBUTE pair = {attrib, value};
return pair;
};
for (uint32_t i = 0; i < attribute_count; i++) {
auto attrib = attribute_list[i].attribute;
auto value = attribute_list[i].value;
switch (attrib) {
case HSA_AMD_SVM_ATTRIB_GLOBAL_FLAG: {
Check(attrib);
switch (value) {
case HSA_AMD_SVM_GLOBAL_FLAG_FINE_GRAINED:
set_flags |= HSA_SVM_FLAG_COHERENT;
break;
case HSA_AMD_SVM_GLOBAL_FLAG_COARSE_GRAINED:
clear_flags |= HSA_SVM_FLAG_COHERENT;
break;
default:
throw AMD::hsa_exception(HSA_STATUS_ERROR_INVALID_ARGUMENT,
"Invalid HSA_AMD_SVM_ATTRIB_GLOBAL_FLAG value.");
}
break;
}
case HSA_AMD_SVM_ATTRIB_READ_ONLY: {
Check(attrib);
if (value)
set_flags |= HSA_SVM_FLAG_GPU_RO;
else
clear_flags |= HSA_SVM_FLAG_GPU_RO;
break;
}
case HSA_AMD_SVM_ATTRIB_HIVE_LOCAL: {
Check(attrib);
if (value)
set_flags |= HSA_SVM_FLAG_HIVE_LOCAL;
else
clear_flags |= HSA_SVM_FLAG_HIVE_LOCAL;
break;
}
case HSA_AMD_SVM_ATTRIB_MIGRATION_GRANULARITY: {
Check(attrib);
// Max migration size is 1GB.
if (value > 18) value = 18;
attribs.push_back(kmtPair(HSA_SVM_ATTR_GRANULARITY, value));
break;
}
case HSA_AMD_SVM_ATTRIB_PREFERRED_LOCATION: {
Check(attrib);
Agent* agent = ConvertAllowNull(value);
if (agent == nullptr)
attribs.push_back(kmtPair(HSA_SVM_ATTR_PREFERRED_LOC, INVALID_NODEID));
else
attribs.push_back(kmtPair(HSA_SVM_ATTR_PREFERRED_LOC, agent->node_id()));
break;
}
case HSA_AMD_SVM_ATTRIB_READ_MOSTLY: {
Check(attrib);
if (value)
set_flags |= HSA_SVM_FLAG_GPU_READ_MOSTLY;
else
clear_flags |= HSA_SVM_FLAG_GPU_READ_MOSTLY;
break;
}
case HSA_AMD_SVM_ATTRIB_AGENT_ACCESSIBLE: {
Agent* agent = Convert(value);
ConfirmNew(agent);
if (agent->device_type() == Agent::kAmdCpuDevice) {
set_flags |= HSA_SVM_FLAG_HOST_ACCESS;
} else {
attribs.push_back(kmtPair(HSA_SVM_ATTR_ACCESS, agent->node_id()));
}
break;
}
case HSA_AMD_SVM_ATTRIB_AGENT_ACCESSIBLE_IN_PLACE: {
Agent* agent = Convert(value);
ConfirmNew(agent);
if (agent->device_type() == Agent::kAmdCpuDevice) {
set_flags |= HSA_SVM_FLAG_HOST_ACCESS;
} else {
attribs.push_back(kmtPair(HSA_SVM_ATTR_ACCESS_IN_PLACE, agent->node_id()));
}
break;
}
case HSA_AMD_SVM_ATTRIB_AGENT_NO_ACCESS: {
Agent* agent = Convert(value);
ConfirmNew(agent);
if (agent->device_type() == Agent::kAmdCpuDevice) {
clear_flags |= HSA_SVM_FLAG_HOST_ACCESS;
} else {
attribs.push_back(kmtPair(HSA_SVM_ATTR_NO_ACCESS, agent->node_id()));
}
break;
}
default:
throw AMD::hsa_exception(HSA_STATUS_ERROR_INVALID_ARGUMENT,
"Illegal or invalid attribute in Runtime::SetSvmAttrib");
}
}
// Merge CPU access properties - grant access if any CPU needs access.
// Probably wrong.
if (set_flags & HSA_SVM_FLAG_HOST_ACCESS) clear_flags &= ~HSA_SVM_FLAG_HOST_ACCESS;
// Add flag updates
if (clear_flags) attribs.push_back(kmtPair(HSA_SVM_ATTR_CLR_FLAGS, clear_flags));
if (set_flags) attribs.push_back(kmtPair(HSA_SVM_ATTR_SET_FLAGS, set_flags));
uint8_t* base = AlignDown((uint8_t*)ptr, 4096);
uint8_t* end = AlignUp((uint8_t*)ptr + size, 4096);
size_t len = end - base;
HSAKMT_STATUS error = hsaKmtSVMSetAttr(base, len, attribs.size(), &attribs[0]);
if (error != HSAKMT_STATUS_SUCCESS)
throw AMD::hsa_exception(HSA_STATUS_ERROR, "hsaKmtSVMSetAttr failed.");
return HSA_STATUS_SUCCESS;
}
hsa_status_t Runtime::GetSvmAttrib(void* ptr, size_t size,
hsa_amd_svm_attribute_pair_t* attribute_list,
size_t attribute_count) {
std::vector<HSA_SVM_ATTRIBUTE> attribs;
attribs.reserve(attribute_count);
std::vector<int> kmtIndices(attribute_count);
bool getFlags = false;
auto Convert = [&](uint64_t value) -> Agent* {
hsa_agent_t handle = {value};
Agent* agent = Agent::Convert(handle);
if ((agent == nullptr) || !agent->IsValid())
throw AMD::hsa_exception(HSA_STATUS_ERROR_INVALID_AGENT,
"Invalid agent handle in Runtime::GetSvmAttrib.");
return agent;
};
auto kmtPair = [](uint32_t attrib, uint32_t value) {
HSA_SVM_ATTRIBUTE pair = {attrib, value};
return pair;
};
for (uint32_t i = 0; i < attribute_count; i++) {
auto& attrib = attribute_list[i].attribute;
auto& value = attribute_list[i].value;
switch (attrib) {
case HSA_AMD_SVM_ATTRIB_GLOBAL_FLAG:
case HSA_AMD_SVM_ATTRIB_READ_ONLY:
case HSA_AMD_SVM_ATTRIB_HIVE_LOCAL:
case HSA_AMD_SVM_ATTRIB_READ_MOSTLY: {
getFlags = true;
kmtIndices[i] = -1;
break;
}
case HSA_AMD_SVM_ATTRIB_MIGRATION_GRANULARITY: {
kmtIndices[i] = attribs.size();
attribs.push_back(kmtPair(HSA_SVM_ATTR_GRANULARITY, 0));
break;
}
case HSA_AMD_SVM_ATTRIB_PREFERRED_LOCATION: {
kmtIndices[i] = attribs.size();
attribs.push_back(kmtPair(HSA_SVM_ATTR_PREFERRED_LOC, 0));
break;
}
case HSA_AMD_SVM_ATTRIB_PREFETCH_LOCATION: {
value = Agent::Convert(GetSVMPrefetchAgent(ptr, size)).handle;
kmtIndices[i] = -1;
break;
}
case HSA_AMD_SVM_ATTRIB_ACCESS_QUERY: {
Agent* agent = Convert(value);
if (agent->device_type() == Agent::kAmdCpuDevice) {
getFlags = true;
kmtIndices[i] = -1;
} else {
kmtIndices[i] = attribs.size();
attribs.push_back(kmtPair(HSA_SVM_ATTR_ACCESS, agent->node_id()));
}
break;
}
default:
throw AMD::hsa_exception(HSA_STATUS_ERROR_INVALID_ARGUMENT,
"Illegal or invalid attribute in Runtime::SetSvmAttrib");
}
}
if (getFlags) attribs.push_back(kmtPair(HSA_SVM_ATTR_SET_FLAGS, 0));
uint8_t* base = AlignDown((uint8_t*)ptr, 4096);
uint8_t* end = AlignUp((uint8_t*)ptr + size, 4096);
size_t len = end - base;
if (attribs.size() != 0) {
HSAKMT_STATUS error = hsaKmtSVMGetAttr(base, len, attribs.size(), &attribs[0]);
if (error != HSAKMT_STATUS_SUCCESS)
throw AMD::hsa_exception(HSA_STATUS_ERROR, "hsaKmtSVMGetAttr failed.");
}
for (uint32_t i = 0; i < attribute_count; i++) {
auto& attrib = attribute_list[i].attribute;
auto& value = attribute_list[i].value;
switch (attrib) {
case HSA_AMD_SVM_ATTRIB_GLOBAL_FLAG: {
if (attribs[attribs.size() - 1].value & HSA_SVM_FLAG_COHERENT)
value = HSA_AMD_SVM_GLOBAL_FLAG_FINE_GRAINED;
else
value = HSA_AMD_SVM_GLOBAL_FLAG_COARSE_GRAINED;
break;
}
case HSA_AMD_SVM_ATTRIB_READ_ONLY: {
value = (attribs[attribs.size() - 1].value & HSA_SVM_FLAG_GPU_RO);
break;
}
case HSA_AMD_SVM_ATTRIB_HIVE_LOCAL: {
value = (attribs[attribs.size() - 1].value & HSA_SVM_FLAG_HIVE_LOCAL);
break;
}
case HSA_AMD_SVM_ATTRIB_MIGRATION_GRANULARITY: {
value = attribs[kmtIndices[i]].value;
break;
}
case HSA_AMD_SVM_ATTRIB_PREFERRED_LOCATION: {
uint64_t node = attribs[kmtIndices[i]].value;
Agent* agent = nullptr;
if (node != INVALID_NODEID) agent = agents_by_node_[node][0];
value = Agent::Convert(agent).handle;
break;
}
case HSA_AMD_SVM_ATTRIB_PREFETCH_LOCATION: {
break;
}
case HSA_AMD_SVM_ATTRIB_READ_MOSTLY: {
value = (attribs[attribs.size() - 1].value & HSA_SVM_FLAG_GPU_READ_MOSTLY);
break;
}
case HSA_AMD_SVM_ATTRIB_ACCESS_QUERY: {
if (kmtIndices[i] == -1) {
if (attribs[attribs.size() - 1].value & HSA_SVM_FLAG_HOST_ACCESS)
attrib = HSA_AMD_SVM_ATTRIB_AGENT_ACCESSIBLE;
} else {
switch (attribs[kmtIndices[i]].type) {
case HSA_SVM_ATTR_ACCESS:
attrib = HSA_AMD_SVM_ATTRIB_AGENT_ACCESSIBLE;
break;
case HSA_SVM_ATTR_ACCESS_IN_PLACE:
attrib = HSA_AMD_SVM_ATTRIB_AGENT_ACCESSIBLE_IN_PLACE;
break;
case HSA_SVM_ATTR_NO_ACCESS:
attrib = HSA_AMD_SVM_ATTRIB_AGENT_NO_ACCESS;
break;
default:
assert(false && "Bad agent accessibility from KFD.");
}
}
break;
}
default:
throw AMD::hsa_exception(HSA_STATUS_ERROR_INVALID_ARGUMENT,
"Illegal or invalid attribute in Runtime::GetSvmAttrib");
}
}
return HSA_STATUS_SUCCESS;
}
hsa_status_t Runtime::SvmPrefetch(void* ptr, size_t size, hsa_agent_t agent,
uint32_t num_dep_signals, const hsa_signal_t* dep_signals,
hsa_signal_t completion_signal) {
uintptr_t base = reinterpret_cast<uintptr_t>(AlignDown(ptr, 4096));
uintptr_t end = AlignUp(reinterpret_cast<uintptr_t>(ptr) + size, 4096);
size_t len = end - base;
PrefetchOp* op = new PrefetchOp();
MAKE_NAMED_SCOPE_GUARD(OpGuard, [&]() { delete op; });
Agent* dest = Agent::Convert(agent);
if (dest->device_type() == Agent::kAmdCpuDevice)
op->node_id = 0;
else
op->node_id = dest->node_id();
op->base = reinterpret_cast<void*>(base);
op->size = len;
op->completion = completion_signal;
if (num_dep_signals > 1) {
op->remaining_deps = num_dep_signals - 1;
for (int i = 0; i < num_dep_signals - 1; i++) op->dep_signals.push_back(dep_signals[i]);
} else {
op->remaining_deps = 0;
}
{
ScopedAcquire<KernelMutex> lock(&prefetch_lock_);
// Remove all fully overlapped and trim partially overlapped ranges.
// Get iteration bounds
auto start = prefetch_map_.upper_bound(base);
if (start != prefetch_map_.begin()) start--;
auto stop = prefetch_map_.lower_bound(end);
auto isEndNode = [&](decltype(start) node) { return node->second.next == prefetch_map_.end(); };
auto isFirstNode = [&](decltype(start) node) {
return node->second.prev == prefetch_map_.end();
};
// Trim and remove old ranges.
while (start != stop) {
uintptr_t startBase = start->first;
uintptr_t startEnd = startBase + start->second.bytes;
auto ibase = Max(startBase, base);
auto iend = Min(startEnd, end);
// Check for overlap
if (ibase < iend) {
// Second range check
if (iend < startEnd) {
auto ret = prefetch_map_.insert(
std::make_pair(iend, PrefetchRange(startEnd - iend, start->second.op)));
assert(ret.second && "Prefetch map insert failed during range split.");
auto it = ret.first;
it->second.prev = start;
it->second.next = start->second.next;
start->second.next = it;
if (!isEndNode(it)) it->second.next->second.prev = it;
}
// Is the first interval of the old range valid
if (startBase < ibase) {
start->second.bytes = ibase - startBase;
} else {
if (isFirstNode(start)) {
start->second.op->prefetch_map_entry = start->second.next;
if (!isEndNode(start)) start->second.next->second.prev = prefetch_map_.end();
} else {
start->second.prev->second.next = start->second.next;
if (!isEndNode(start)) start->second.next->second.prev = start->second.prev;
}
prefetch_map_.erase(start);
}
}
start++;
}
// Insert new range.
auto ret = prefetch_map_.insert(std::make_pair(base, PrefetchRange(len, op)));
assert(ret.second && "Prefetch map insert failed.");
auto it = ret.first;
op->prefetch_map_entry = it;
it->second.next = it->second.prev = prefetch_map_.end();
}
// Remove the prefetch's ranges from the map.
static auto removePrefetchRanges = [](PrefetchOp* op) {
ScopedAcquire<KernelMutex> lock(&Runtime::runtime_singleton_->prefetch_lock_);
auto it = op->prefetch_map_entry;
while (it != Runtime::runtime_singleton_->prefetch_map_.end()) {
auto next = it->second.next;
Runtime::runtime_singleton_->prefetch_map_.erase(it);
it = next;
}
};
// Prefetch Signal handler for synchronization.
static hsa_amd_signal_handler signal_handler = [](hsa_signal_value_t value, void* arg) {
PrefetchOp* op = reinterpret_cast<PrefetchOp*>(arg);
if (op->remaining_deps > 0) {
op->remaining_deps--;
Runtime::runtime_singleton_->SetAsyncSignalHandler(
op->dep_signals[op->remaining_deps], HSA_SIGNAL_CONDITION_EQ, 0, signal_handler, arg);
return false;
}
HSA_SVM_ATTRIBUTE attrib;
attrib.type = HSA_SVM_ATTR_PREFETCH_LOC;
attrib.value = op->node_id;
HSAKMT_STATUS error = hsaKmtSVMSetAttr(op->base, op->size, 1, &attrib);
assert(error == HSAKMT_STATUS_SUCCESS && "KFD Prefetch failed.");
removePrefetchRanges(op);
if (op->completion.handle != 0) Signal::Convert(op->completion)->SubRelaxed(1);
delete op;
return false;
};
auto no_dependencies = [](void* arg) { signal_handler(0, arg); };
MAKE_NAMED_SCOPE_GUARD(RangeGuard, [&]() { removePrefetchRanges(op); });
hsa_status_t err;
if (num_dep_signals == 0)
err = AMD::hsa_amd_async_function(no_dependencies, op);
else
err = SetAsyncSignalHandler(dep_signals[num_dep_signals - 1], HSA_SIGNAL_CONDITION_EQ, 0,
signal_handler, op);
if (err != HSA_STATUS_SUCCESS) throw AMD::hsa_exception(err, "Signal handler unable to be set.");
RangeGuard.Dismiss();
OpGuard.Dismiss();
return HSA_STATUS_SUCCESS;
}
Agent* Runtime::GetSVMPrefetchAgent(void* ptr, size_t size) {
uintptr_t base = reinterpret_cast<uintptr_t>(AlignDown(ptr, 4096));
uintptr_t end = AlignUp(reinterpret_cast<uintptr_t>(ptr) + size, 4096);
size_t len = end - base;
std::vector<std::pair<uintptr_t, uintptr_t>> holes;
ScopedAcquire<KernelMutex> lock(&Runtime::runtime_singleton_->prefetch_lock_);
auto start = prefetch_map_.upper_bound(base);
if (start != prefetch_map_.begin()) start--;
auto stop = prefetch_map_.lower_bound(end);
// KFD returns -1 for no or mixed destinations.
uint32_t prefetch_node = -2;
if (start != stop) {
prefetch_node = start->second.op->node_id;
}
while (start != stop) {
uintptr_t startBase = start->first;
uintptr_t startEnd = startBase + start->second.bytes;
auto ibase = Max(base, startBase);
auto iend = Min(end, startEnd);
// Check for intersection with the query
if (ibase < iend) {
// If prefetch locations are different then we report null agent.
if (prefetch_node != start->second.op->node_id) return nullptr;
// Push leading gap to an array for checking KFD.
if (base < ibase) holes.push_back(std::make_pair(base, ibase - base));
// Trim query range.
base = iend;
}
start++;
}
if (base < end) holes.push_back(std::make_pair(base, end - base));
HSA_SVM_ATTRIBUTE attrib;
attrib.type = HSA_SVM_ATTR_PREFETCH_LOC;
for (auto& range : holes) {
HSAKMT_STATUS error =
hsaKmtSVMGetAttr(reinterpret_cast<void*>(range.first), range.second, 1, &attrib);
assert(error == HSAKMT_STATUS_SUCCESS && "KFD prefetch query failed.");
if (attrib.value == -1) return nullptr;
if (prefetch_node == -2) prefetch_node = attrib.value;
if (prefetch_node != attrib.value) return nullptr;
}
assert(prefetch_node != -2 && "prefetch_node was not updated.");
assert(prefetch_node != -1 && "Should have already returned.");
return agents_by_node_[prefetch_node][0];
}
} // namespace core
} // namespace rocr
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