Brandon Potter
111 строки
2.9 KiB
C++
111 строки
2.9 KiB
C++
/*
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* Copyright (c) 2018 Intel Corporation. All rights reserved.
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* This software is available to you under the BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/* Multithreaded Contention Test: Overlapping AMO/quiet on a shared (default)
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* context */
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#include <assert.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <roc_shmem/roc_shmem.hpp>
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using namespace rocshmem;
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#define T 8
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long *dest;
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int me, npes;
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int errors = 0;
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static void *thread_main(void *arg) {
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int tid = *(int *)arg;
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int i;
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/* Threads increment the counter on each PE and then performs a quiet.
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* All threads use the default context; thus, this checks that quiet
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* with overlapping AMOs behaves correctly. */
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for (i = 1; i <= npes; i++)
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roc_shmem_int64_atomic_add(dest, tid, (me + i) % npes);
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roc_shmem_quiet();
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return NULL;
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}
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int main(int argc, char **argv) {
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int tl, i, ret;
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pthread_t threads[T];
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int t_arg[T];
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roc_shmem_init_thread(ROC_SHMEM_THREAD_MULTIPLE, &tl);
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if (tl != ROC_SHMEM_THREAD_MULTIPLE) {
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printf("Init failed (requested thread level %d, got %d)\n",
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ROC_SHMEM_THREAD_MULTIPLE, tl);
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roc_shmem_global_exit(1);
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}
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me = roc_shmem_my_pe();
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npes = roc_shmem_n_pes();
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if (me == 0)
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printf("Starting multithreaded test on %d PEs, %d threads/PE\n", npes, T);
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dest = (long *)roc_shmem_malloc(sizeof(long));
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*dest = 0;
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for (i = 0; i < T; i++) {
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int err;
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t_arg[i] = i;
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err = pthread_create(&threads[i], NULL, thread_main, (void *)&t_arg[i]);
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assert(0 == err);
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}
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for (i = 0; i < T; i++) {
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int err;
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err = pthread_join(threads[i], NULL);
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assert(0 == err);
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}
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roc_shmem_sync_all();
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if ((*dest) != ((T - 1) * T / 2) * npes) {
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printf("%d: dest = %ld, expected %d\n", me, *dest,
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((T - 1) * T / 2) * npes);
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errors++;
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}
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roc_shmem_free(dest);
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roc_shmem_finalize();
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return (errors == 0) ? 0 : 1;
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}
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