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/*
* Copyright (C) 2010. See COPYRIGHT in top-level directory.
*/
#include <stdio.h>
#include <stdlib.h>
#include <armci.h>
#include <armci_internals.h>
#define PART_SIZE 1
int main(int argc, char **argv) {
int me, nproc;
int i, *procs;
ARMCI_Group g_world, g_odd, g_even;
MPI_Init(&argc, &argv);
ARMCI_Init();
MPI_Comm_rank(MPI_COMM_WORLD, &me);
MPI_Comm_size(MPI_COMM_WORLD, &nproc);
procs = malloc(sizeof(int) * ( nproc/2 + (nproc % 2 ? 1 : 0 )));
if (me == 0) printf("ARMCI Group test starting on %d procs\n", nproc);
ARMCI_Group_get_world(&g_world);
if (me == 0) printf(" + Creating odd group\n");
for (i = 1; i < nproc; i += 2) {
procs[i/2] = i;
}
ARMCI_Group_create_child(i/2, procs, &g_odd, &g_world);
if (me == 0) printf(" + Creating even group\n");
for (i = 0; i < nproc; i += 2) {
procs[i/2] = i;
}
ARMCI_Group_create_child(i/2, procs, &g_even, &g_world);
/***********************************************************************/
{
int grp_me, grp_nproc;
double t_abs_to_grp, t_grp_to_abs;
const int iter = 1000000;
if (me == 0) {
ARMCI_Group_rank(&g_even, &grp_me);
ARMCI_Group_size(&g_even, &grp_nproc);
t_abs_to_grp = MPI_Wtime();
for (i = 0; i < iter; i++)
ARMCII_Translate_absolute_to_group(&g_even, (grp_me+1) % grp_nproc);
t_abs_to_grp = MPI_Wtime() - t_abs_to_grp;
t_grp_to_abs = MPI_Wtime();
for (i = 0; i < iter; i++)
ARMCI_Absolute_id(&g_even, (grp_me+1) % grp_nproc);
t_grp_to_abs = MPI_Wtime() - t_grp_to_abs;
printf("t_abs_to_grp = %f us, t_grp_to_abs = %f us\n", t_abs_to_grp/iter * 1.0e6, t_grp_to_abs/iter * 1.0e6);
}
ARMCI_Barrier();
}
/***********************************************************************/
if (me == 0) printf(" + Freeing groups\n");
if (me % 2 > 0)
ARMCI_Group_free(&g_odd);
else
ARMCI_Group_free(&g_even);
free(procs);
ARMCI_Finalize();
MPI_Finalize();
return 0;
}
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