ovni/test/emu/nanos6/breakdown-write-zero.c

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/* Copyright (c) 2024 Barcelona Supercomputing Center (BSC)
* SPDX-License-Identifier: GPL-3.0-or-later */
#include <stdint.h>
#include <stdlib.h>
#include "compat.h"
#include "instr.h"
#include "instr_nanos6.h"
/* Cause the sort module to write zeros in some rows when the breakdown model is
* enabled, which shouldn't cause a panic. */
int
main(void)
{
int rank = atoi(getenv("OVNI_RANK"));
int nranks = atoi(getenv("OVNI_NRANKS"));
if (nranks < 2)
die("need at least two ranks");
instr_start(rank, nranks);
instr_nanos6_init();
/* Change the subsystem in a single thread, while the rest remain NULL.
* This shouldn't cause a panic, as writting zero is ok for the other
* sort outputs. */
if (rank == 0) {
instr_nanos6_worker_loop_enter();
instr_nanos6_worker_loop_exit();
}
instr_end();
return 0;
}