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/* Test Rmw Performance
* The number of processes are increases from 2 to the number of
* processes present in the job */
#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 FETCH_AND_ADD 0
#define FETCH_AND_ADD_LONG 1
#define SWAP 2
#define SWAP_LONG 3
#define MAX_MESSAGE_SIZE 1024
#define MEDIUM_MESSAGE_SIZE 8192
#define ITER_SMALL 10000
#define ITER_LARGE 10000
#define WARMUP 20
static void fill_array(double *arr, int count, int which);
static void rmw_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 */
if (0 == me) {
printf("#Processes avg time (us)\n");
printf("\n\n");
}
if (0 == me) {
printf("#PNNL armci Rmw-Fetch and Add Long Test\n");
printf("\n\n");
}
rmw_test(MAX_MESSAGE_SIZE, FETCH_AND_ADD_LONG);
if (0 == me)
printf("\n\n");
if (0 == me) {
printf("#PNNL armci Rmw-Fetch and Add Test\n");
}
rmw_test(MAX_MESSAGE_SIZE, FETCH_AND_ADD);
if (0 == me)
printf("\n\n");
if (0 == me) {
printf("#PNNL armci Rmw-Swap Long Test\n");
}
rmw_test(MAX_MESSAGE_SIZE, SWAP_LONG);
if (0 == me)
printf("\n\n");
if (0 == me) {
printf("#PNNL armci Rmw-Swap Test\n");
}
rmw_test(MAX_MESSAGE_SIZE, SWAP);
if (0 == me)
printf("\n\n");
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 rmw_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);
/* All processes perform Rmw on process 0*/
int dst = 0;
double t_start, t_end;
int j;
int iter = ITER_LARGE;
int part_proc;
for (part_proc = 2; part_proc <= nproc; part_proc *= 2) {
if (me < part_proc) {
for (j= 0; j < iter + WARMUP; ++j) {
if (WARMUP == j) {
t_start = dclock();
}
switch (op) {
case FETCH_AND_ADD:
comex_rmw(COMEX_FETCH_AND_ADD,
put_buf[me], dst_ptr[dst], 1, dst, COMEX_GROUP_WORLD);
break;
case FETCH_AND_ADD_LONG:
comex_rmw(COMEX_FETCH_AND_ADD_LONG,
put_buf[me], dst_ptr[dst], 1, dst, COMEX_GROUP_WORLD);
break;
case SWAP:
comex_rmw(COMEX_SWAP,
put_buf[me], dst_ptr[dst], 1, dst, COMEX_GROUP_WORLD);
break;
case SWAP_LONG:
comex_rmw(COMEX_SWAP_LONG,
put_buf[me], dst_ptr[dst], 1, dst, COMEX_GROUP_WORLD);
break;
default:
comex_error("oops", 1);
}
}
}
comex_barrier(COMEX_GROUP_WORLD);
/* calculate total time and average time */
t_end = dclock();
if (0 == me) {
printf("%5d\t\t%6.2f\n",
part_proc,
((t_end - t_start))/iter);
}
}
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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