Brandon Potter
78 строки
2.5 KiB
C++
78 строки
2.5 KiB
C++
/*
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* Copyright (c) 2017 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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*/
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/* Each PE sends a message to every PE. PEs wait for all messages to
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* arrive using roc_shmem_test to poll the array. */
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#include <stdio.h>
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#include <roc_shmem/roc_shmem.hpp>
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using namespace rocshmem;
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/* Wait for any entry in the given ivar array to match the wait criteria and
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* return the index of the entry that satisfied the test. */
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static int wait_any(long *ivar, int count, roc_shmem_cmps cmp, long value) {
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int idx = 0;
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while (!roc_shmem_long_test(&ivar[idx], cmp, value)) idx = (idx + 1) % count;
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return idx;
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}
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int main(void) {
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roc_shmem_init();
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const int mype = roc_shmem_my_pe();
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const int npes = roc_shmem_n_pes();
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long *wait_vars = (long *)roc_shmem_malloc(npes * sizeof(long));
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for (int i = 0; i < npes; i++) {
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wait_vars[i] = 0;
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}
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/* Put mype+1 to every PE */
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for (int i = 0; i < npes; i++)
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roc_shmem_long_p(&wait_vars[mype], mype + 1, i);
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int nrecv = 0, errors = 0;
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/* Wait for all messages to arrive */
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while (nrecv < npes) {
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int who = wait_any(wait_vars, npes, ROC_SHMEM_CMP_NE, 0);
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if (wait_vars[who] != who + 1) {
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printf("%d: wait_vars[%d] = %ld, expected %d\n", mype, who,
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wait_vars[who], who + 1);
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errors++;
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}
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wait_vars[who] = 0;
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nrecv++;
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}
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roc_shmem_free(wait_vars);
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roc_shmem_finalize();
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return errors;
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}
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