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#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <mpi.h>
#include "comex.h"
static int me;
static int nproc;
#define PUT 0
#define GET 1
#define ACC 2
#define MAX_MESSAGE_SIZE 1024*1024*8
#define MEDIUM_MESSAGE_SIZE 8192
#define ITER_SMALL 100
#define ITER_LARGE 100
#define WARMUP 10
static void fill_array(double *arr, int count, int which);
static void contig_test(size_t buffer_size, int op);
double dclock()
{
struct timeval tv;
gettimeofday(&tv, NULL);
return(tv.tv_sec * 1.0e6 + (double)tv.tv_usec);
}
int main(int argc, char **argv)
{
comex_init_args(&argc, &argv);
comex_group_rank(COMEX_GROUP_WORLD, &me);
comex_group_size(COMEX_GROUP_WORLD, &nproc);
/* This test only works for two processes */
assert(nproc == 2);
if (0 == me) {
printf("msg size (bytes) avg time (us) avg b/w (MB/sec)\n");
}
if (0 == me) {
printf("#PNNL comex Put Test\n");
}
contig_test(MAX_MESSAGE_SIZE, PUT);
if (0 == me) {
printf("#PNNL comex Get Test\n");
}
contig_test(MAX_MESSAGE_SIZE, GET);
if (0 == me) {
printf("#PNNL comex Accumulate Test\n");
}
contig_test(MAX_MESSAGE_SIZE, ACC);
comex_finalize();
MPI_Finalize();
return 0;
}
static void fill_array(double *arr, int count, int which)
{
int i;
for (i = 0; i < count; i++) {
arr[i] = i * 8.23 + which * 2.89;
}
}
static void contig_test(size_t buffer_size, int op)
{
void **dst_ptr;
void **put_buf;
void **get_buf;
double *times;
dst_ptr = (void*)malloc(nproc * sizeof(void*));
put_buf = (void*)malloc(nproc * sizeof(void*));
get_buf = (void*)malloc(nproc * sizeof(void*));
times = (double*)malloc(nproc * sizeof(double));
comex_malloc(dst_ptr, buffer_size, COMEX_GROUP_WORLD);
comex_malloc(put_buf, buffer_size, COMEX_GROUP_WORLD);
comex_malloc(get_buf, buffer_size, COMEX_GROUP_WORLD);
/* initialize what we're putting */
fill_array((double*)put_buf[me], buffer_size/sizeof(double), me);
size_t msg_size;
int dst = 1;
double scale = 1.0;
for (msg_size = 16; msg_size <= buffer_size; msg_size *= 2) {
int j;
int iter = msg_size > MEDIUM_MESSAGE_SIZE ? ITER_LARGE : ITER_SMALL;
double t_start, t_end;
if (0 == me) {
for (j= 0; j < iter + WARMUP; ++j) {
if (WARMUP == j) {
t_start = dclock();
}
switch (op) {
case PUT:
comex_put(put_buf[me], dst_ptr[dst], msg_size,
dst, COMEX_GROUP_WORLD);
break;
case GET:
comex_get(dst_ptr[dst], get_buf[me], msg_size,
dst, COMEX_GROUP_WORLD);
break;
case ACC:
comex_acc(COMEX_ACC_DBL, &scale,
put_buf[me], dst_ptr[dst], msg_size,
dst, COMEX_GROUP_WORLD);
break;
default:
comex_error("oops", 1);
}
}
}
/* calculate total time and average time */
t_end = dclock();
comex_barrier(COMEX_GROUP_WORLD);
if (0 == me) {
printf("%zu\t\t%f\t\t%f\n",
msg_size,
((t_end - t_start))/iter,
msg_size*iter/((t_end - t_start)));
}
}
comex_free(dst_ptr[me], COMEX_GROUP_WORLD);
comex_free(put_buf[me], COMEX_GROUP_WORLD);
comex_free(get_buf[me], COMEX_GROUP_WORLD);
free(dst_ptr);
free(put_buf);
free(get_buf);
free(times);
}
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