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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
/*
* This test looks at the behavior of MPI_Win_fence and epochs. Each
* MPI_Win_fence may both begin and end both the exposure and access epochs.
* Thus, it is not necessary to use MPI_Win_fence in pairs.
*
* The tests have this form:
* Process A Process B
* fence fence
* put,put
* fence fence
* put,put
* fence fence
* put,put put,put
* fence fence
*/
#include "mpitest.h"
#include "mpi.h"
#include <stdio.h>
#include <stdlib.h>
#include "dtpools.h"
#include "mtest_dtp.h"
#include <assert.h>
/*
static char MTEST_Descrip[] = "Put with Fences used to separate epochs";
*/
#define MAX_PERR 10
int world_rank, world_size;
int PrintRecvedError(const char *, const char *, const char *);
static int epoch_test(int seed, int testsize, int count, const char *basic_type,
mtest_mem_type_e origmem, mtest_mem_type_e targetmem)
{
int errs = 0, err;
int rank, size, orig_rank, target_rank;
int minsize = 2;
int i;
int onlyInt = 0;
MPI_Aint origcount, targetcount;
MPI_Comm comm;
MPI_Win win;
MPI_Aint extent, lb;
MPI_Datatype origtype, targettype;
DTP_pool_s dtp;
struct mtest_obj orig, target;
static char test_desc[200];
snprintf(test_desc, 200,
"./epoch_test -seed=%d -testsize=%d -type=%s -count=%d -origmem=%s -targetmem=%s",
seed, testsize, basic_type, count, MTest_memtype_name(origmem),
MTest_memtype_name(targetmem));
if (world_rank == 0) {
MTestPrintfMsg(1, " %s\n", test_desc);
}
err = DTP_pool_create(basic_type, count, seed, &dtp);
if (err != DTP_SUCCESS) {
fprintf(stderr, "Error while creating orig pool (%s,%d)\n", basic_type, count);
fflush(stderr);
}
/* Check for a simple choice of communicator and datatypes */
if (getenv("MTEST_SIMPLE"))
onlyInt = 1;
if (MTestIsBasicDtype(dtp.DTP_base_type)) {
MPI_Type_get_extent(dtp.DTP_base_type, &lb, &extent);
} else {
/* if the base datatype is not a basic datatype, use an extent
* of 1 */
extent = 1;
}
MTest_dtp_obj_start(&orig, "origin", dtp, origmem, 0, false);
MTest_dtp_obj_start(&target, "target", dtp, targetmem, 1, true);
while (MTestGetIntracommGeneral(&comm, minsize, 1)) {
if (comm == MPI_COMM_NULL) {
/* for NULL comms, make sure these processes create the
* same number of objects, so the target knows what
* datatype layout to check for */
errs += MTEST_CREATE_AND_FREE_DTP_OBJS(dtp, testsize);
errs += MTEST_CREATE_AND_FREE_DTP_OBJS(dtp, testsize);
continue;
}
/* Determine the sender and receiver */
MPI_Comm_rank(comm, &rank);
MPI_Comm_size(comm, &size);
orig_rank = 0;
target_rank = size - 1;
MPI_Win_create(target.buf, target.maxbufsize, extent, MPI_INFO_NULL, comm, &win);
/* To improve reporting of problems about operations, we
* change the error handler to errors return */
MPI_Win_set_errhandler(win, MPI_ERRORS_RETURN);
for (i = 0; i < testsize; i++) {
errs += MTest_dtp_create(&orig, true);
errs += MTest_dtp_create(&target, false);
errs += MTest_dtp_init(&orig, 0, 1, count);
errs += MTest_dtp_init(&target, -1, -1, count);
origcount = orig.dtp_obj.DTP_type_count;
origtype = orig.dtp_obj.DTP_datatype;
targetcount = target.dtp_obj.DTP_type_count;
targettype = target.dtp_obj.DTP_datatype;
/* At this point, we have all of the elements that we
* need to begin the multiple fence and put tests */
/* Fence 1 */
err = MPI_Win_fence(MPI_MODE_NOPRECEDE, win);
if (err) {
if (errs++ < MAX_PERR)
MTestPrintError(err);
}
if (rank == orig_rank) {
err = MPI_Put((char *) orig.buf + orig.dtp_obj.DTP_buf_offset, origcount, origtype,
target_rank, target.dtp_obj.DTP_buf_offset / extent, targetcount,
targettype, win);
if (err) {
if (errs++ < MAX_PERR)
MTestPrintError(err);
}
}
/* Fence 2 */
err = MPI_Win_fence(0, win);
if (err) {
if (errs++ < MAX_PERR)
MTestPrintError(err);
}
/* target checks data, then target puts */
if (rank == target_rank) {
errs += MTest_dtp_check(&target, 0, 1, count, &orig, errs < MAX_PERR);
err = MPI_Put((char *) orig.buf + orig.dtp_obj.DTP_buf_offset,
origcount, origtype, orig_rank,
target.dtp_obj.DTP_buf_offset / extent, targetcount, targettype, win);
if (err) {
if (errs++ < MAX_PERR)
MTestPrintError(err);
}
}
/* Fence 3 */
err = MPI_Win_fence(0, win);
if (err) {
if (errs++ < MAX_PERR)
MTestPrintError(err);
}
/* src checks data, then Src and target puts */
if (rank == orig_rank) {
errs += MTest_dtp_check(&target, 0, 1, count, &orig, errs < MAX_PERR);
err = MPI_Put((char *) orig.buf + orig.dtp_obj.DTP_buf_offset, origcount, origtype,
target_rank, target.dtp_obj.DTP_buf_offset / extent, targetcount,
targettype, win);
if (err) {
if (errs++ < MAX_PERR)
MTestPrintError(err);
}
}
if (rank == target_rank) {
err = MPI_Put((char *) orig.buf + orig.dtp_obj.DTP_buf_offset,
origcount, origtype, orig_rank,
target.dtp_obj.DTP_buf_offset / extent, targetcount, targettype, win);
if (err) {
if (errs++ < MAX_PERR)
MTestPrintError(err);
}
}
/* Fence 4 */
err = MPI_Win_fence(MPI_MODE_NOSUCCEED, win);
if (err) {
if (errs++ < MAX_PERR)
MTestPrintError(err);
}
/* src and target checks data */
if (rank == orig_rank) {
errs += MTest_dtp_check(&target, 0, 1, count, &orig, errs < MAX_PERR);
}
if (rank == target_rank) {
errs += MTest_dtp_check(&target, 0, 1, count, &orig, errs < MAX_PERR);
}
MTest_dtp_destroy(&orig);
MTest_dtp_destroy(&target);
/* Only do one count in the simple case */
if (onlyInt)
break;
}
MPI_Win_free(&win);
MTestFreeComm(&comm);
/* Only do one communicator in the simple case */
if (onlyInt)
break;
}
MTest_dtp_obj_finish(&orig);
MTest_dtp_obj_finish(&target);
DTP_pool_free(dtp);
return errs;
}
int PrintRecvedError(const char *msg, const char *orig_name, const char *target_name)
{
printf
("At step %s, Data in target buffer did not match for destination datatype %s (put with orig datatype %s)\n",
msg, orig_name, target_name);
return 0;
}
int main(int argc, char *argv[])
{
int errs = 0;
MTest_Init(&argc, &argv);
MPI_Comm_size(MPI_COMM_WORLD, &world_size);
MPI_Comm_rank(MPI_COMM_WORLD, &world_rank);
struct dtp_args dtp_args;
dtp_args_init(&dtp_args, MTEST_DTP_RMA, argc, argv);
while (dtp_args_get_next(&dtp_args)) {
errs += epoch_test(dtp_args.seed, dtp_args.testsize,
dtp_args.count, dtp_args.basic_type,
dtp_args.u.rma.origmem, dtp_args.u.rma.targetmem);
}
dtp_args_finalize(&dtp_args);
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
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