rocm-systems/projects/rocshmem/tests/functional_tests/default_ctx_primitive_tester.cpp

/******************************************************************************
 * Copyright (c) Advanced Micro Devices, Inc. All rights reserved.
 *
 * SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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 *****************************************************************************/

 #include "default_ctx_primitive_tester.hpp"

 #include <rocshmem/rocshmem.hpp>
 
 using namespace rocshmem;
 
 /******************************************************************************
  * DEVICE TEST KERNEL
  *****************************************************************************/
 __global__ void DefaultCTXPrimitiveTest(int loop, int skip,
                               long long int *start_time,
                               long long int *end_time, char *source,
                               char *dest, size_t size, TestType type,
                               ShmemContextType ctx_type, int wf_size) {
   int wg_id = get_flat_grid_id();
   int t_id  = get_flat_block_id();
   int wf_id = t_id / wf_size;
 
   /**
    * Shared array to capture the start time for each wavefront
   * Max threads per block = 1024, wavefront size = 64 or 32 depending
   * on the GPUs. Using 32 since its safer for the dimensioning of the array,
   * the last 16 elements will not be used on GPUs with a wf size of 64.
   * Maximum array size required = 1024/32 = 32
    */
   __shared__ long long int wf_start_time[32];
 
   /**
    * Calculate start index for each thread within the grid
    */
   size_t offset = size * get_flat_id();
   source += offset;
   dest += offset;
 
   for (int i = 0; i < loop + skip; i++) {
     if (i == skip) {
       __syncthreads();
       // Ensures all RMA calls from the skip loops are completed
       if(is_thread_zero_in_block()) {
         rocshmem_quiet();
       }
       __syncthreads();
       // Capture the start time of each wavefront to identify the earliest one
       wf_start_time[wf_id] = wall_clock64();
     }
 
     switch (type) {
       case DefaultCTXGetTestType:
         rocshmem_getmem(dest, source, size, 1);
         break;
       case DefaultCTXGetNBITestType:
         rocshmem_getmem_nbi(dest, source, size, 1);
         break;
       case DefaultCTXPutTestType:
         rocshmem_putmem(dest, source, size, 1);
         break;
       case DefaultCTXPutNBITestType:
         rocshmem_putmem_nbi(dest, source, size, 1);
         break;
       case DefaultCTXPTestType:
         for (int s = 0; s < size; s++) {
           char val = source[s];
           rocshmem_char_p(&dest[s], val, 1);
         }
         break;
       case DefaultCTXGTestType:
         for (int s = 0; s < size; s++) {
           char ret = rocshmem_char_g(&source[s], 1);
           dest[s] = ret;
         }
         break;
       default:
         break;
     }
   }
 
   __syncthreads();
   if(is_thread_zero_in_block()) {
     rocshmem_quiet();
   }
 
   /**
    * End time of the last wavefront is recorded by overwriting
    * the value previously set by earlier wavefronts.
    */
   end_time[wg_id] = wall_clock64();
 
   // Find the earliest start time
   int num_wfs = (get_flat_block_size() - 1 ) / wf_size + 1;
   for (int i = num_wfs / 2; i > 0; i >>= 1 ) {
     if(t_id < i) {
       wf_start_time[t_id] = min(wf_start_time[t_id], wf_start_time[t_id + i]);
     }
   }
   __syncthreads();
 
   if (t_id == 0) {
     start_time[wg_id] = wf_start_time[0];
   }
 
 }
 
 /******************************************************************************
  * HOST TESTER CLASS METHODS
  *****************************************************************************/
 DefaultCTXPrimitiveTester::DefaultCTXPrimitiveTester(TesterArguments args)
  : Tester(args) {
   size_t buff_size = args.max_msg_size * args.wg_size * args.num_wgs;
   source = (char *)rocshmem_malloc(buff_size);
   dest = (char *)rocshmem_malloc(buff_size);
 
   if (source == nullptr || dest == nullptr) {
     std::cerr << "Error allocating memory from symmetric heap" << std::endl;
     std::cerr << "source: " << source << ", dest: " << dest << std::endl;
     if (source) {
       rocshmem_free(source);
     }
     if (dest) {
       rocshmem_free(dest);
     }
     rocshmem_global_exit(1);
   }
 
   for(size_t i = 0; i < buff_size; i++) {
     source[i] = static_cast<char>('a' + i % 26);
   }
 }
 
 DefaultCTXPrimitiveTester::~DefaultCTXPrimitiveTester() {
   rocshmem_free(source);
   rocshmem_free(dest);
 }
 
 void DefaultCTXPrimitiveTester::resetBuffers(size_t size) {
   size_t buff_size = size * args.wg_size * args.num_wgs;
   memset(dest, '1', buff_size);
 }
 
 void DefaultCTXPrimitiveTester::launchKernel(dim3 gridSize, dim3 blockSize,
                                              int loop, size_t size) {
   size_t shared_bytes = 0;
 
   hipLaunchKernelGGL(DefaultCTXPrimitiveTest, gridSize, blockSize,
                      shared_bytes, stream, loop, args.skip, start_time,
                      end_time, source, dest, size, _type, _shmem_context,
                      wf_size);
 
   num_msgs = (loop + args.skip) * gridSize.x * blockSize.x;
   num_timed_msgs = loop * gridSize.x * blockSize.x;
 }
 
 void DefaultCTXPrimitiveTester::verifyResults(size_t size) {
   int check_id =
       (_type == DefaultCTXGetTestType ||
        _type == DefaultCTXGetNBITestType || _type == DefaultCTXGTestType)
           ? 0
           : 1;
 
   if (args.myid == check_id) {
     size_t buff_size = size * args.wg_size * args.num_wgs;
     for (size_t i = 0; i < buff_size; i++) {
       if (dest[i] != source[i]) {
         std::cerr << "Data validation error at idx " << i << std::endl;
         std::cerr << " Got " << dest[i] << ", Expected "
                   << source[i] << std::endl;
         exit(-1);
       }
     }
   }
 }