[AFAR VII] rocprofiler_sample_device_counting_service return data as part of API call (#57)

---------

Co-authored-by: Benjamin Welton <bewelton@amd.com>
Co-authored-by: Benjamin Welton <ben@amd.com>

[ROCm/rocprofiler-sdk commit: 253c9adfc1]

projects/rocprofiler-sdk/CHANGELOG.md

@@ -122,6 +122,7 @@ Full documentation for ROCprofiler-SDK is available at [rocm.docs.amd.com/projec
 - Changed naming of "dispatch profiling service" to a more descriptive "dispatch counting service". To convert existing tool or user code to the new names, the following sed can be used: `-type f -exec sed -i -e 's/dispatch_profile_counting_service/dispatch_counting_service/g' -e 's/dispatch_profile.h/dispatch_counting_service.h/g' -e 's/rocprofiler_profile_counting_dispatch_callback_t/rocprofiler_dispatch_counting_service_callback_t/g' -e 's/rocprofiler_profile_counting_dispatch_data_t/rocprofiler_dispatch_counting_service_data_t/g'  -e 's/rocprofiler_profile_counting_dispatch_record_t/rocprofiler_dispatch_counting_service_record_t/g' {} +`
 - `FETCH_SIZE` metric on gfx94x now uses `TCC_BUBBLE` for 128B reads.
 - PMC dispatch-based counter collection serialization is now per-device instead of being global across all devices.
+- Added output return functionality to rocprofiler_sample_device_counting_service
 - Added rocprofiler_load_counter_definition.
 
 ### Resolved issues

projects/rocprofiler-sdk/samples/counter_collection/client.cpp

@@ -358,7 +358,7 @@ tool_init(rocprofiler_client_finalize_t, void* user_data)
         // below to select the profile config to use when a kernel dispatch is
         // recieved.
         get_profile_cache().emplace(
-            agent.id.handle, build_profile_for_agent(agent.id, std::set<std::string>{"SQ_WAVES"}));
+            agent.id.handle, build_profile_for_agent(agent.id, std::set<std::string>{"TCC_HIT"}));
     }
 
     auto client_thread = rocprofiler_callback_thread_t{};

projects/rocprofiler-sdk/samples/counter_collection/device_counting.cpp

@@ -289,8 +289,11 @@ tool_init(rocprofiler_client_finalize_t, void* user_data)
         rocprofiler_start_context(get_client_ctx());
         while(exit_toggle().load() == false)
         {
-            rocprofiler_sample_device_counting_service(
-                get_client_ctx(), {.value = count}, ROCPROFILER_COUNTER_FLAG_NONE);
+            rocprofiler_sample_device_counting_service(get_client_ctx(),
+                                                       {.value = count},
+                                                       ROCPROFILER_COUNTER_FLAG_NONE,
+                                                       nullptr,
+                                                       nullptr);
             count++;
             std::this_thread::sleep_for(std::chrono::milliseconds(50));
         }

projects/rocprofiler-sdk/source/include/rocprofiler-sdk/device_counting_service.h

@@ -106,18 +106,28 @@ rocprofiler_configure_device_counting_service(rocprofiler_context_id_t context_i
  * @param [in] context_id context id
  * @param [in] user_data User supplied data, included in records outputted to buffer.
  * @param [in] flags Flags to specify how the counter data should be collected (defaults to sync).
+ * @param [in/out] output_records Output records collected via sampling (output is also written to
+ * buffer). Must be allocated by caller.
+ * @param [in/out] rec_count On entry, this is the maximum number of records rocprof can store in
+ * output_records. On exit, contains the number of actual records.
  * @return ::rocprofiler_status_t
  * @retval ::ROCPROFILER_STATUS_ERROR_CONTEXT_INVALID Returned if the context does not exist or
  * the context is not configured for agent profiling.
  * @retval ::ROCPROFILER_STATUS_ERROR_CONTEXT_ERROR Returned if another operation is in progress (
  * start/stop ctx or another read).
  * @retval ::ROCPROFILER_STATUS_ERROR Returned if HSA has not been initialized yet.
+ * @retval ::ROCPROFILER_STATUS_ERROR_OUT_OF_RESOURCES Returned output_records is set but size is
+ * too small to store results
  * @retval ::ROCPROFILER_STATUS_SUCCESS Returned if read request was successful.
+ * @retval ::ROCPROFILER_STATUS_ERROR_INVALID_ARGUMENT Returned If ASYNC is being used while
+ * output_records is not null.
  */
 rocprofiler_status_t
-rocprofiler_sample_device_counting_service(rocprofiler_context_id_t   context_id,
-                                           rocprofiler_user_data_t    user_data,
-                                           rocprofiler_counter_flag_t flags) ROCPROFILER_API;
+rocprofiler_sample_device_counting_service(rocprofiler_context_id_t      context_id,
+                                           rocprofiler_user_data_t       user_data,
+                                           rocprofiler_counter_flag_t    flags,
+                                           rocprofiler_record_counter_t* output_records,
+                                           size_t*                       rec_count) ROCPROFILER_API;
 
 /** @} */
 

projects/rocprofiler-sdk/source/lib/rocprofiler-sdk/counters/device_counting.cpp

@@ -156,6 +156,10 @@ agent_async_handler(hsa_signal_value_t /*signal_v*/, void* data)
         {
             val.user_data = callback_data.user_data;
             val.agent_id  = prof_config->agent->id;
+            if(callback_data.cached_counters)
+            {
+                callback_data.cached_counters->push_back(val);
+            }
             buf->emplace(
                 ROCPROFILER_BUFFER_CATEGORY_COUNTERS, ROCPROFILER_COUNTER_RECORD_VALUE, val);
         }
@@ -253,9 +257,10 @@ init_callback_data(rocprofiler::counters::agent_callback_data& callback_data,
  * and trigger the async handler manually.
  */
 rocprofiler_status_t
-read_agent_ctx(const context::context*    ctx,
-               rocprofiler_user_data_t    user_data,
-               rocprofiler_counter_flag_t flags)
+read_agent_ctx(const context::context*                    ctx,
+               rocprofiler_user_data_t                    user_data,
+               rocprofiler_counter_flag_t                 flags,
+               std::vector<rocprofiler_record_counter_t>* out_counters)
 {
     rocprofiler_status_t status = ROCPROFILER_STATUS_SUCCESS;
     if(!ctx->device_counter_collection)
@@ -282,6 +287,18 @@ read_agent_ctx(const context::context*    ctx,
 
     for(auto& callback_data : agent_ctx.agent_data)
     {
+        auto wait_if_sync = [&]() {
+            if((flags & ROCPROFILER_COUNTER_FLAG_ASYNC) == 0)
+            {
+                // Wait for any inprogress samples to complete before returning
+                hsa::get_core_table()->hsa_signal_wait_relaxed_fn(callback_data.completion,
+                                                                  HSA_SIGNAL_CONDITION_EQ,
+                                                                  1,
+                                                                  UINT64_MAX,
+                                                                  HSA_WAIT_STATE_ACTIVE);
+            }
+        };
+
         if(!callback_data.profile || !callback_data.set_profile) continue;
         const auto* agent = agent::get_agent_cache(callback_data.profile->agent);
 
@@ -295,6 +312,11 @@ read_agent_ctx(const context::context*    ctx,
         // No AQL packet, nothing to do here.
         if(!callback_data.packet) continue;
 
+        wait_if_sync();
+
+        if((flags & ROCPROFILER_COUNTER_FLAG_ASYNC) == 0)
+            callback_data.cached_counters = out_counters;
+
         // If we have no hardware counters but a packet. The caller is expecting
         // non-hardware based counter values to be returned. We can skip packet injection
         // and trigger the async handler directly
@@ -302,16 +324,7 @@ read_agent_ctx(const context::context*    ctx,
         {
             callback_data.user_data = user_data;
             hsa::get_core_table()->hsa_signal_store_relaxed_fn(callback_data.completion, -1);
-            // Wait for the barrier/read packet to complete
-            if(flags != ROCPROFILER_COUNTER_FLAG_ASYNC)
-            {
-                // Wait for any inprogress samples to complete before returning
-                hsa::get_core_table()->hsa_signal_wait_relaxed_fn(callback_data.completion,
-                                                                  HSA_SIGNAL_CONDITION_EQ,
-                                                                  1,
-                                                                  UINT64_MAX,
-                                                                  HSA_WAIT_STATE_ACTIVE);
-            }
+            wait_if_sync();
             continue;
         }
 
@@ -334,17 +347,8 @@ read_agent_ctx(const context::context*    ctx,
         hsa::get_core_table()->hsa_signal_store_relaxed_fn(callback_data.completion, 0);
         callback_data.user_data = user_data;
         submitPacket(agent->profile_queue(), &barrier.barrier_and);
-
-        // Wait for the barrier/read packet to complete
-        if(flags != ROCPROFILER_COUNTER_FLAG_ASYNC)
-        {
-            // Wait for any inprogress samples to complete before returning
-            hsa::get_core_table()->hsa_signal_wait_relaxed_fn(callback_data.completion,
-                                                              HSA_SIGNAL_CONDITION_EQ,
-                                                              1,
-                                                              UINT64_MAX,
-                                                              HSA_WAIT_STATE_ACTIVE);
-        }
+        wait_if_sync();
+        if((flags & ROCPROFILER_COUNTER_FLAG_ASYNC) == 0) callback_data.cached_counters = nullptr;
     }
 
     agent_ctx.status.exchange(rocprofiler::context::device_counting_service::state::ENABLED);

projects/rocprofiler-sdk/source/lib/rocprofiler-sdk/counters/device_counting.hpp

@@ -27,6 +27,7 @@
 #include <rocprofiler-sdk/fwd.h>
 #include <rocprofiler-sdk/hsa.h>
 #include <rocprofiler-sdk/rocprofiler.h>
+#include <cstddef>
 
 namespace rocprofiler
 {
@@ -55,11 +56,12 @@ struct agent_callback_data
     rocprofiler_user_data_t user_data     = {.value = 0};
     rocprofiler_user_data_t callback_data = {.value = 0};
 
-    std::shared_ptr<rocprofiler::counters::profile_config> profile     = {};
-    rocprofiler_agent_id_t                                 agent_id    = {.handle = 0};
-    rocprofiler_device_counting_service_callback_t         cb          = nullptr;
-    rocprofiler_buffer_id_t                                buffer      = {.handle = 0};
-    bool                                                   set_profile = false;
+    std::shared_ptr<rocprofiler::counters::profile_config> profile         = {};
+    rocprofiler_agent_id_t                                 agent_id        = {.handle = 0};
+    rocprofiler_device_counting_service_callback_t         cb              = nullptr;
+    rocprofiler_buffer_id_t                                buffer          = {.handle = 0};
+    bool                                                   set_profile     = false;
+    std::vector<rocprofiler_record_counter_t>*             cached_counters = nullptr;
 
     agent_callback_data() = default;
     agent_callback_data(agent_callback_data&& rhs) noexcept
@@ -115,9 +117,10 @@ stop_agent_ctx(const context::context* ctx);
 // read calls are not allowed in ASYNC mode and will result in
 // this call waiting for the previous sample to complete.
 rocprofiler_status_t
-read_agent_ctx(const context::context*    ctx,
-               rocprofiler_user_data_t    user_data,
-               rocprofiler_counter_flag_t flags);
+read_agent_ctx(const context::context*                    ctx,
+               rocprofiler_user_data_t                    user_data,
+               rocprofiler_counter_flag_t                 flags,
+               std::vector<rocprofiler_record_counter_t>* out_counters);
 
 uint64_t
 submitPacket(hsa_queue_t* queue, const void* packet);

projects/rocprofiler-sdk/source/lib/rocprofiler-sdk/counters/tests/device_counting.cpp

@@ -108,10 +108,10 @@ test_init()
     hsa::get_queue_controller()->init(get_api_table(), get_ext_table());
 }
 
-std::vector<rocprofiler_record_counter_t>&
+common::Synchronized<std::vector<rocprofiler_record_counter_t>>&
 global_recs()
 {
-    static std::vector<rocprofiler_record_counter_t> recs;
+    static common::Synchronized<std::vector<rocprofiler_record_counter_t>> recs;
     return recs;
 }
 
@@ -146,7 +146,7 @@ check_output_created(rocprofiler_context_id_t,
             }
             found_value = record->user_data.value;
             // ROCP_ERROR << fmt::format("Found counter value: {}", record->counter_value);
-            global_recs().push_back(*record);
+            global_recs().wlock([&](auto& data) { data.push_back(*record); });
         }
     }
 
@@ -319,6 +319,7 @@ protected:
             size_t track_metric = 0;
             for(auto& metric : metrics)
             {
+                std::vector<rocprofiler_record_counter_t> output_records(10000);
                 // global_recs().clear();
                 track_metric++;
                 ROCP_ERROR << "Testing metric " << metric.name();
@@ -402,9 +403,23 @@ protected:
                                         HSA_WAIT_STATE_BLOCKED);
 
                 // Sample the counting service.
-                ROCPROFILER_CALL(
-                    rocprofiler_sample_device_counting_service(ctx, {.value = track_metric}, flags),
-                    "Could not sample");
+
+                if(flags == ROCPROFILER_COUNTER_FLAG_ASYNC)
+                {
+                    ROCPROFILER_CALL(rocprofiler_sample_device_counting_service(
+                                         ctx, {.value = track_metric}, flags, nullptr, nullptr),
+                                     "Could not sample");
+                }
+                else
+                {
+                    global_recs().wlock([&](auto& _data) { _data.clear(); });
+                    size_t out_count = output_records.size();
+                    ROCPROFILER_CALL(
+                        rocprofiler_sample_device_counting_service(
+                            ctx, {.value = track_metric}, flags, output_records.data(), &out_count),
+                        "Could not sample");
+                    output_records.resize(out_count);
+                }
                 ROCPROFILER_CALL(rocprofiler_stop_context(ctx), "Could not stop context");
                 rocprofiler_flush_buffer(opt_buff_id);
 
@@ -417,6 +432,27 @@ protected:
                 {
                     ROCP_FATAL << "Failed to get data for " << metric.name();
                 }
+                else if(flags != ROCPROFILER_COUNTER_FLAG_ASYNC)
+                {
+                    auto recs_local = global_recs().rlock([](const auto& data) { return data; });
+
+                    if(recs_local.size() != output_records.size())
+                    {
+                        ROCP_FATAL << "Output size does not match: " << recs_local.size() << " "
+                                   << output_records.size();
+                    }
+                    if(!std::equal(recs_local.begin(),
+                                   recs_local.end(),
+                                   output_records.begin(),
+                                   [](const auto& a, const auto& b) {
+                                       return a.id == b.id && a.counter_value == b.counter_value &&
+                                              a.dispatch_id == b.dispatch_id &&
+                                              a.agent_id.handle == b.agent_id.handle;
+                                   }))
+                    {
+                        ROCP_FATAL << "Output does not match between buffer and callback";
+                    }
+                }
             }
             hsa_signal_destroy(completion_signal);
             hsa_signal_destroy(found_data);
@@ -599,9 +635,10 @@ TEST_F(device_counting_service_test, async_counters) { test_run(ROCPROFILER_COUN
 TEST_F(device_counting_service_test, sync_grbm_verify)
 {
     test_run(ROCPROFILER_COUNTER_FLAG_NONE, {"GRBM_COUNT"}, 50000);
-    ROCP_ERROR << global_recs().size();
+    auto local_recs = global_recs().rlock([](const auto& data) { return data; });
+    ROCP_ERROR << local_recs.size();
 
-    for(const auto& val : global_recs())
+    for(const auto& val : local_recs)
     {
         rocprofiler_counter_id_t id;
         rocprofiler_query_record_counter_id(val.id, &id);
@@ -615,9 +652,10 @@ TEST_F(device_counting_service_test, sync_grbm_verify)
 TEST_F(device_counting_service_test, sync_gpu_util_verify)
 {
     test_run(ROCPROFILER_COUNTER_FLAG_NONE, {"GPU_UTIL"}, 50000);
-    ROCP_ERROR << global_recs().size();
+    auto local_recs = global_recs().rlock([](const auto& data) { return data; });
+    ROCP_ERROR << local_recs.size();
 
-    for(const auto& val : global_recs())
+    for(const auto& val : local_recs)
     {
         rocprofiler_counter_id_t id;
         rocprofiler_query_record_counter_id(val.id, &id);
@@ -631,9 +669,10 @@ TEST_F(device_counting_service_test, sync_gpu_util_verify)
 TEST_F(device_counting_service_test, sync_sq_waves_verify)
 {
     test_run(ROCPROFILER_COUNTER_FLAG_NONE, {"SQ_WAVES_sum"}, 50000);
-    ROCP_ERROR << global_recs().size();
+    auto local_recs = global_recs().rlock([](const auto& data) { return data; });
+    ROCP_ERROR << local_recs.size();
 
-    for(const auto& val : global_recs())
+    for(const auto& val : local_recs)
     {
         rocprofiler_counter_id_t id;
         rocprofiler_query_record_counter_id(val.id, &id);

projects/rocprofiler-sdk/source/lib/rocprofiler-sdk/device_counting_service.cpp

@@ -27,6 +27,8 @@
 #include "lib/rocprofiler-sdk/counters/device_counting.hpp"
 #include "rocprofiler-sdk/fwd.h"
 
+#include <string.h>
+
 extern "C" {
 rocprofiler_status_t
 rocprofiler_configure_device_counting_service(rocprofiler_context_id_t context_id,
@@ -40,11 +42,35 @@ rocprofiler_configure_device_counting_service(rocprofiler_context_id_t context_i
 }
 
 rocprofiler_status_t
-rocprofiler_sample_device_counting_service(rocprofiler_context_id_t   context_id,
-                                           rocprofiler_user_data_t    user_data,
-                                           rocprofiler_counter_flag_t flags)
+rocprofiler_sample_device_counting_service(rocprofiler_context_id_t      context_id,
+                                           rocprofiler_user_data_t       user_data,
+                                           rocprofiler_counter_flag_t    flags,
+                                           rocprofiler_record_counter_t* output_records,
+                                           size_t*                       rec_count)
 {
+    if(output_records != nullptr)
+    {
+        if((flags & ROCPROFILER_COUNTER_FLAG_ASYNC) != 0)
+            return ROCPROFILER_STATUS_ERROR_INVALID_ARGUMENT;
+        CHECK(rec_count);
+        auto recs   = std::vector<rocprofiler_record_counter_t>{};
+        auto status = rocprofiler::counters::read_agent_ctx(
+            rocprofiler::context::get_registered_context(context_id), user_data, flags, &recs);
+        if(status == ROCPROFILER_STATUS_SUCCESS)
+        {
+            if(recs.size() > *rec_count)
+            {
+                *rec_count = recs.size();
+                return ROCPROFILER_STATUS_ERROR_OUT_OF_RESOURCES;
+            }
+            *rec_count = recs.size();
+            std::memcpy(
+                output_records, recs.data(), sizeof(rocprofiler_record_counter_t) * recs.size());
+        }
+        return status;
+    }
+
     return rocprofiler::counters::read_agent_ctx(
-        rocprofiler::context::get_registered_context(context_id), user_data, flags);
+        rocprofiler::context::get_registered_context(context_id), user_data, flags, nullptr);
 }
 }