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/*
* Copyright (c) 2013-2017 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2013-2016 Inria. All rights reserved.
* Copyright (c) 2015 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/*
pml monitoring tester.
Designed by George Bosilca <bosilca@icl.utk.edu>, Emmanuel Jeannot <emmanuel.jeannot@inria.fr> and
Clement Foyer <clement.foyer@inria.fr>
Contact the authors for questions.
To be run as:
mpirun -n 4 --mca pml_monitoring_enable 2 ./test_pvar_access
Then, the output should be:
Flushing phase 1:
I 0 1 108 bytes 27 msgs sent
I 1 2 104 bytes 26 msgs sent
I 2 3 104 bytes 26 msgs sent
I 3 0 104 bytes 26 msgs sent
Flushing phase 2:
I 0 1 20 bytes 4 msgs sent
I 0 2 20528 bytes 9 msgs sent
I 1 0 20 bytes 4 msgs sent
I 1 2 104 bytes 26 msgs sent
I 1 3 236 bytes 56 msgs sent
I 2 0 20528 bytes 9 msgs sent
I 2 3 112 bytes 27 msgs sent
I 3 1 220 bytes 52 msgs sent
I 3 2 20 bytes 4 msgs sent
*/
#include <stdlib.h>
#include <stdio.h>
#include <mpi.h>
static MPI_T_pvar_handle count_handle;
static MPI_T_pvar_handle msize_handle;
static const char count_pvar_name[] = "pml_monitoring_messages_count";
static const char msize_pvar_name[] = "pml_monitoring_messages_size";
static int count_pvar_idx, msize_pvar_idx;
static int world_rank, world_size;
static void print_vars(int rank, int size, size_t* msg_count, size_t*msg_size)
{
int i;
for(i = 0; i < size; ++i) {
if(0 != msg_size[i])
printf("I\t%d\t%d\t%zu bytes\t%zu msgs sent\n", rank, i, msg_size[i], msg_count[i]);
}
}
int main(int argc, char* argv[])
{
int rank, size, n, to, from, tagno, MPIT_result, provided, count;
MPI_T_pvar_session session;
MPI_Status status;
MPI_Comm newcomm;
MPI_Comm comm = MPI_COMM_WORLD;
MPI_Request request;
size_t*msg_count_p1, *msg_size_p1;
size_t*msg_count_p2, *msg_size_p2;
/* first phase : make a token circulated in MPI_COMM_WORLD */
n = -1;
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
world_size = size;
world_rank = rank;
to = (rank + 1) % size;
from = (rank - 1) % size;
tagno = 201;
MPIT_result = MPI_T_init_thread(MPI_THREAD_SINGLE, &provided);
if (MPIT_result != MPI_SUCCESS)
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
/* Retrieve the pvar indices */
MPIT_result = MPI_T_pvar_get_index(count_pvar_name, MPI_T_PVAR_CLASS_SIZE, &count_pvar_idx);
if (MPIT_result != MPI_SUCCESS) {
printf("cannot find monitoring MPI_T \"%s\" pvar, check that you have monitoring pml\n",
count_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
MPIT_result = MPI_T_pvar_get_index(msize_pvar_name, MPI_T_PVAR_CLASS_SIZE, &msize_pvar_idx);
if (MPIT_result != MPI_SUCCESS) {
printf("cannot find monitoring MPI_T \"%s\" pvar, check that you have monitoring pml\n",
msize_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
/* Get session for pvar binding */
MPIT_result = MPI_T_pvar_session_create(&session);
if (MPIT_result != MPI_SUCCESS) {
printf("cannot create a session for \"%s\" and \"%s\" pvars\n",
count_pvar_name, msize_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
/* Allocating a new PVAR in a session will reset the counters */
MPIT_result = MPI_T_pvar_handle_alloc(session, count_pvar_idx,
&comm, &count_handle, &count);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to allocate handle on \"%s\" pvar, check that you have monitoring pml\n",
count_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
MPIT_result = MPI_T_pvar_handle_alloc(session, msize_pvar_idx,
&comm, &msize_handle, &count);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to allocate handle on \"%s\" pvar, check that you have monitoring pml\n",
msize_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
/* Allocate arrays to retrieve results */
msg_count_p1 = calloc(count * 4, sizeof(size_t));
msg_size_p1 = &msg_count_p1[count];
msg_count_p2 = &msg_count_p1[2*count];
msg_size_p2 = &msg_count_p1[3*count];
/* Start pvar */
MPIT_result = MPI_T_pvar_start(session, count_handle);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to start handle on \"%s\" pvar, check that you have monitoring pml\n",
count_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
MPIT_result = MPI_T_pvar_start(session, msize_handle);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to start handle on \"%s\" pvar, check that you have monitoring pml\n",
msize_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
if (rank == 0) {
n = 25;
MPI_Isend(&n,1,MPI_INT,to,tagno,MPI_COMM_WORLD,&request);
}
while (1) {
MPI_Irecv(&n, 1, MPI_INT, from, tagno, MPI_COMM_WORLD, &request);
MPI_Wait(&request, &status);
if (rank == 0) {n--;tagno++;}
MPI_Isend(&n, 1, MPI_INT, to, tagno, MPI_COMM_WORLD, &request);
if (rank != 0) {n--;tagno++;}
if (n<0){
break;
}
}
/* Test stopping variable then get values */
MPIT_result = MPI_T_pvar_stop(session, count_handle);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to stop handle on \"%s\" pvar, check that you have monitoring pml\n",
count_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
MPIT_result = MPI_T_pvar_stop(session, msize_handle);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to stop handle on \"%s\" pvar, check that you have monitoring pml\n",
msize_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
MPIT_result = MPI_T_pvar_read(session, count_handle, msg_count_p1);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to fetch handle on \"%s\" pvar, check that you have monitoring pml\n",
count_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
MPIT_result = MPI_T_pvar_read(session, msize_handle, msg_size_p1);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to fetch handle on \"%s\" pvar, check that you have monitoring pml\n",
msize_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
/* Circulate a token to proper display the results */
if(0 == world_rank) {
printf("Flushing phase 1:\n");
print_vars(world_rank, world_size, msg_count_p1, msg_size_p1);
MPI_Send(NULL, 0, MPI_BYTE, (world_rank + 1) % world_size, 300, MPI_COMM_WORLD);
MPI_Recv(NULL, 0, MPI_BYTE, (world_rank - 1) % world_size, 300, MPI_COMM_WORLD, &status);
} else {
MPI_Recv(NULL, 0, MPI_BYTE, (world_rank - 1) % world_size, 300, MPI_COMM_WORLD, &status);
print_vars(world_rank, world_size, msg_count_p1, msg_size_p1);
MPI_Send(NULL, 0, MPI_BYTE, (world_rank + 1) % world_size, 300, MPI_COMM_WORLD);
}
/* Add to the phase 1 the display token ring message count */
MPIT_result = MPI_T_pvar_read(session, count_handle, msg_count_p1);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to fetch handle on \"%s\" pvar, check that you have monitoring pml\n",
count_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
MPIT_result = MPI_T_pvar_read(session, msize_handle, msg_size_p1);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to fetch handle on \"%s\" pvar, check that you have monitoring pml\n",
msize_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
/*
Second phase. Work with different communicators.
even ranks will circulate a token
while odd ranks will perform a all_to_all
*/
MPIT_result = MPI_T_pvar_start(session, count_handle);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to start handle on \"%s\" pvar, check that you have monitoring pml\n",
count_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
MPIT_result = MPI_T_pvar_start(session, msize_handle);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to start handle on \"%s\" pvar, check that you have monitoring pml\n",
msize_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
MPI_Comm_split(MPI_COMM_WORLD, rank%2, rank, &newcomm);
if(rank%2){ /*even ranks (in COMM_WORD) circulate a token*/
MPI_Comm_rank(newcomm, &rank);
MPI_Comm_size(newcomm, &size);
if( size > 1 ) {
to = (rank + 1) % size;
from = (rank - 1) % size;
tagno = 201;
if (rank == 0){
n = 50;
MPI_Send(&n, 1, MPI_INT, to, tagno, newcomm);
}
while (1){
MPI_Recv(&n, 1, MPI_INT, from, tagno, newcomm, &status);
if (rank == 0) {n--; tagno++;}
MPI_Send(&n, 1, MPI_INT, to, tagno, newcomm);
if (rank != 0) {n--; tagno++;}
if (n<0){
break;
}
}
}
} else { /*odd ranks (in COMM_WORD) will perform a all_to_all and a barrier*/
int send_buff[10240];
int recv_buff[10240];
MPI_Comm_rank(newcomm, &rank);
MPI_Comm_size(newcomm, &size);
MPI_Alltoall(send_buff, 10240/size, MPI_INT, recv_buff, 10240/size, MPI_INT, newcomm);
MPI_Comm_split(newcomm, rank%2, rank, &newcomm);
MPI_Barrier(newcomm);
}
MPIT_result = MPI_T_pvar_read(session, count_handle, msg_count_p2);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to fetch handle on \"%s\" pvar, check that you have monitoring pml\n",
count_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
MPIT_result = MPI_T_pvar_read(session, msize_handle, msg_size_p2);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to fetch handle on \"%s\" pvar, check that you have monitoring pml\n",
msize_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
/* Taking only in account the second phase */
for(int i = 0; i < size; ++i) {
msg_count_p2[i] -= msg_count_p1[i];
msg_size_p2[i] -= msg_size_p1[i];
}
/* Circulate a token to proper display the results */
if(0 == world_rank) {
printf("Flushing phase 2:\n");
print_vars(world_rank, world_size, msg_count_p2, msg_size_p2);
MPI_Send(NULL, 0, MPI_BYTE, (world_rank + 1) % world_size, 300, MPI_COMM_WORLD);
MPI_Recv(NULL, 0, MPI_BYTE, (world_rank - 1) % world_size, 300, MPI_COMM_WORLD, &status);
} else {
MPI_Recv(NULL, 0, MPI_BYTE, (world_rank - 1) % world_size, 300, MPI_COMM_WORLD, &status);
print_vars(world_rank, world_size, msg_count_p2, msg_size_p2);
MPI_Send(NULL, 0, MPI_BYTE, (world_rank + 1) % world_size, 300, MPI_COMM_WORLD);
}
MPIT_result = MPI_T_pvar_handle_free(session, &count_handle);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to free handle on \"%s\" pvar, check that you have monitoring pml\n",
count_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
MPIT_result = MPI_T_pvar_handle_free(session, &msize_handle);
if (MPIT_result != MPI_SUCCESS) {
printf("failed to free handle on \"%s\" pvar, check that you have monitoring pml\n",
msize_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
MPIT_result = MPI_T_pvar_session_free(&session);
if (MPIT_result != MPI_SUCCESS) {
printf("cannot close a session for \"%s\" and \"%s\" pvars\n",
count_pvar_name, msize_pvar_name);
MPI_Abort(MPI_COMM_WORLD, MPIT_result);
}
(void)MPI_T_finalize();
free(msg_count_p1);
MPI_Finalize();
return EXIT_SUCCESS;
}
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