241 wiersze
8.7 KiB
C++
241 wiersze
8.7 KiB
C++
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/******************************************************************************
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* Copyright (c) Advanced Micro Devices, Inc. All rights reserved.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*****************************************************************************/
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#include "team_broadcastmem_on_stream_tester.hpp"
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#include <rocshmem/rocshmem.hpp>
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#include <hip/hip_runtime.h>
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#include <cstring>
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#include <cassert>
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#include <vector>
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/******************************************************************************
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* HOST TESTER CLASS METHODS
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*****************************************************************************/
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TeamBroadcastmemOnStreamTester::TeamBroadcastmemOnStreamTester(TesterArguments args)
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: Tester(args) {
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my_pe = rocshmem_team_my_pe(ROCSHMEM_TEAM_WORLD);
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n_pes = rocshmem_team_n_pes(ROCSHMEM_TEAM_WORLD);
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char* value{nullptr};
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if ((value = getenv("ROCSHMEM_TEST_MAX_NUM_TEAMS"))) {
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num_teams = atoi(value);
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} else {
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// Default to number of work groups
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num_teams = args.num_wgs;
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}
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// Set root PE to 0 by default, can be modified via environment variable
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if ((value = getenv("ROCSHMEM_TEST_BROADCAST_ROOT"))) {
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pe_root = atoi(value);
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if (pe_root < 0 || pe_root >= n_pes) {
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std::cerr << "Invalid ROCSHMEM_TEST_BROADCAST_ROOT value. Using PE 0."
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<< std::endl;
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pe_root = 0;
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}
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}
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int num_bytes_wg = args.max_msg_size;
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int total_bytes = num_bytes_wg * num_teams;
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buf_size = total_bytes;
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source_buf = static_cast<char *>(rocshmem_malloc(buf_size));
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dest_buf = static_cast<char *>(rocshmem_malloc(buf_size));
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if (source_buf == nullptr || dest_buf == nullptr) {
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std::cerr << "Error allocating memory from symmetric heap" << std::endl;
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std::cerr << "source: " << source_buf << ", dest: " << dest_buf
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<< std::endl;
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rocshmem_global_exit(1);
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}
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team_world_dup.resize(num_teams);
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streams.resize(num_teams);
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start_events_timed.resize(num_teams);
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stop_events_timed.resize(num_teams);
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for (int i = 0; i < num_teams; i++) {
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CHECK_HIP(hipStreamCreate(&streams[i]));
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CHECK_HIP(hipEventCreate(&start_events_timed[i]));
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CHECK_HIP(hipEventCreate(&stop_events_timed[i]));
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}
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}
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TeamBroadcastmemOnStreamTester::~TeamBroadcastmemOnStreamTester() {
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for (int i = 0; i < num_teams; i++) {
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CHECK_HIP(hipEventDestroy(stop_events_timed[i]));
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CHECK_HIP(hipEventDestroy(start_events_timed[i]));
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CHECK_HIP(hipStreamDestroy(streams[i]));
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}
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rocshmem_free(source_buf);
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rocshmem_free(dest_buf);
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}
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void TeamBroadcastmemOnStreamTester::preLaunchKernel() {
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bw_factor = 1; // Broadcast is one-to-all
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for (int team_i = 0; team_i < num_teams; team_i++) {
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team_world_dup[team_i] = ROCSHMEM_TEAM_INVALID;
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rocshmem_team_split_strided(ROCSHMEM_TEAM_WORLD, 0, 1, n_pes, nullptr, 0,
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&team_world_dup[team_i]);
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if (team_world_dup[team_i] == ROCSHMEM_TEAM_INVALID) {
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std::cerr << "Team " << team_i << " is invalid!" << std::endl;
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abort();
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}
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}
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}
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void TeamBroadcastmemOnStreamTester::postLaunchKernel() {
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// Synchronize all streams to ensure events are recorded
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for (int i = 0; i < num_teams; i++) {
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CHECK_HIP(hipStreamSynchronize(streams[i]));
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}
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// Get elapsed time for each work group from HIP events
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for (int wg_id = 0; wg_id < num_teams && wg_id < num_timers; wg_id++) {
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float elapsed_time_ms = 0.0f;
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CHECK_HIP(hipEventElapsedTime(&elapsed_time_ms, start_events_timed[wg_id],
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stop_events_timed[wg_id]));
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// Convert milliseconds to GPU cycles
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// wall_clk_rate is in kHz, so: cycles = ms * wall_clk_rate
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long long int elapsed_cycles = static_cast<long long int>(
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elapsed_time_ms * static_cast<float>(wall_clk_rate));
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start_time[wg_id] = 0;
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end_time[wg_id] = elapsed_cycles;
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}
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// Fill remaining timers with zero if num_timers > num_teams
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for (int i = num_teams; i < num_timers; i++) {
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start_time[i] = 0;
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end_time[i] = 0;
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}
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for (int team_i = 0; team_i < num_teams; team_i++) {
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rocshmem_team_destroy(team_world_dup[team_i]);
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}
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}
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void TeamBroadcastmemOnStreamTester::resetBuffers(size_t size) {
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// Initialize source buffer on all PEs
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// Each work group has its own portion
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for (int wg_id = 0; wg_id < num_teams; wg_id++) {
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int idx = wg_id * size;
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if (my_pe == pe_root) {
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// Root PE fills its source buffer with broadcast value
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int value = (pe_root + 1) * 100 + wg_id;
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std::memset(source_buf + idx, value, size);
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} else {
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// Non-root PEs source buffer (not used in broadcast)
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std::memset(source_buf + idx, 0xFF, size);
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}
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}
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// Initialize destination buffer on all PEs
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// Root PE keeps its initial dest value (broadcast doesn't copy to root's
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// dest) Non-root PEs set to 0 (will receive broadcast data)
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for (int wg_id = 0; wg_id < num_teams; wg_id++) {
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int idx = wg_id * size;
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if (my_pe == pe_root) {
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// Root PE's dest buffer stays with a different value
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int root_dest_value = 0xAA;
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std::memset(dest_buf + idx, root_dest_value, size);
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} else {
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std::memset(dest_buf + idx, 0, size);
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}
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}
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}
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void TeamBroadcastmemOnStreamTester::launchKernel(dim3 gridSize,
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dim3 blockSize,
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int loop,
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size_t size) {
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// Execute warmup iterations (skip)
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for (int i = 0; i < args.skip; i++) {
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for (int wg_id = 0; wg_id < num_teams; wg_id++) {
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char *wg_source = source_buf + wg_id * size;
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char *wg_dest = dest_buf + wg_id * size;
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rocshmem_broadcastmem_on_stream(team_world_dup[wg_id], wg_dest,
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wg_source, size, pe_root, streams[wg_id]);
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}
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}
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for (int i = 0; i < num_teams; i++) {
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CHECK_HIP(hipStreamSynchronize(streams[i]));
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}
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for (int i = 0; i < loop; i++) {
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for (int wg_id = 0; wg_id < num_teams; wg_id++) {
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// Record start event for this work group on first iteration
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if (i == 0) {
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CHECK_HIP(hipEventRecord(start_events_timed[wg_id], streams[wg_id]));
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}
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char *wg_source = source_buf + wg_id * size;
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char *wg_dest = dest_buf + wg_id * size;
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rocshmem_broadcastmem_on_stream(team_world_dup[wg_id], wg_dest,
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wg_source, size, pe_root, streams[wg_id]);
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// Record stop event for this work group on last iteration
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if (i == loop - 1) {
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CHECK_HIP(hipEventRecord(stop_events_timed[wg_id], streams[wg_id]));
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}
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}
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}
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num_msgs = (loop + args.skip) * num_teams;
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num_timed_msgs = loop * num_teams;
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}
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void TeamBroadcastmemOnStreamTester::verifyResults(size_t size) {
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// Verify correctness: after broadcast, non-root PEs receive the broadcast
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// data Root PE's dest buffer is NOT modified (per OpenSHMEM/rocSHMEM spec)
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for (int wg_id = 0; wg_id < num_teams; wg_id++) {
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int idx = wg_id * size;
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int expected_value;
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if (my_pe == pe_root) {
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// Root PE's dest buffer should remain unchanged (0xAA)
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expected_value = 0xAA;
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} else {
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// Non-root PEs should have received the broadcast value
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expected_value = (pe_root + 1) * 100 + wg_id;
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}
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for (size_t k = 0; k < size; k++) {
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if (static_cast<unsigned char>(dest_buf[idx + k]) !=
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static_cast<unsigned char>(expected_value)) {
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std::cerr << "PE " << my_pe << ": Verification failed for WG "
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<< wg_id << " at byte " << k << std::endl;
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std::cerr << "Expected value: " << expected_value
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<< ", Got: " << static_cast<int>(dest_buf[idx + k])
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<< std::endl;
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rocshmem_global_exit(1);
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}
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}
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}
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}
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