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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mpitest.h"
#define IF_VERBOSE(a) if (verbose) { printf a ; fflush(stdout); }
/* This test checks to make sure that two MPI_Comm_connects to two different
* MPI ports
* match their corresponding MPI_Comm_accepts. The root process opens two
* MPI ports and
* sends the first port to process 1 and the second to process 2. Then the
* root process
* accepts a connection from the second port followed by the first port. '
* Processes 1 and
* 2 both connect back to the root but process 2 first sleeps for three
* seconds to give
* process 1 time to attempt to connect to the root. The root should wait
* until
* process 2 connects before accepting the connection from process 1.
*/
int main(int argc, char *argv[])
{
int num_errors = 0, total_num_errors = 0;
int rank, size;
char port1[MPI_MAX_PORT_NAME];
char port2[MPI_MAX_PORT_NAME];
char port3[MPI_MAX_PORT_NAME];
MPI_Status status;
MPI_Comm comm1, comm2, comm3;
int verbose = 0;
int data = 0;
MTEST_VG_MEM_INIT(port1, MPI_MAX_PORT_NAME * sizeof(char));
MTEST_VG_MEM_INIT(port2, MPI_MAX_PORT_NAME * sizeof(char));
MTEST_VG_MEM_INIT(port3, MPI_MAX_PORT_NAME * sizeof(char));
if (getenv("MPITEST_VERBOSE")) {
verbose = 1;
}
MTest_Init(&argc, &argv);
MPI_Comm_size(MPI_COMM_WORLD, &size);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
if (size < 4) {
printf("Four processes needed to run this test.\n");
MPI_Finalize();
return 1;
}
if (rank == 0) {
IF_VERBOSE(("0: opening ports.\n"));
MPI_Open_port(MPI_INFO_NULL, port1);
MPI_Open_port(MPI_INFO_NULL, port2);
MPI_Open_port(MPI_INFO_NULL, port3);
IF_VERBOSE(("0: opened port1: <%s>\n", port1));
IF_VERBOSE(("0: opened port2: <%s>\n", port2));
IF_VERBOSE(("0: opened port3: <%s>\n", port3));
IF_VERBOSE(("0: sending ports.\n"));
MPI_Send(port1, MPI_MAX_PORT_NAME, MPI_CHAR, 1, 0, MPI_COMM_WORLD);
MPI_Send(port2, MPI_MAX_PORT_NAME, MPI_CHAR, 2, 0, MPI_COMM_WORLD);
MPI_Send(port3, MPI_MAX_PORT_NAME, MPI_CHAR, 3, 0, MPI_COMM_WORLD);
IF_VERBOSE(("0: accepting port3.\n"));
MPI_Comm_accept(port3, MPI_INFO_NULL, 0, MPI_COMM_SELF, &comm3);
IF_VERBOSE(("0: accepting port2.\n"));
MPI_Comm_accept(port2, MPI_INFO_NULL, 0, MPI_COMM_SELF, &comm2);
IF_VERBOSE(("0: accepting port1.\n"));
MPI_Comm_accept(port1, MPI_INFO_NULL, 0, MPI_COMM_SELF, &comm1);
IF_VERBOSE(("0: closing ports.\n"));
MPI_Close_port(port1);
MPI_Close_port(port2);
MPI_Close_port(port3);
IF_VERBOSE(("0: sending 1 to process 1.\n"));
data = 1;
MPI_Send(&data, 1, MPI_INT, 0, 0, comm1);
IF_VERBOSE(("0: sending 2 to process 2.\n"));
data = 2;
MPI_Send(&data, 1, MPI_INT, 0, 0, comm2);
IF_VERBOSE(("0: sending 3 to process 3.\n"));
data = 3;
MPI_Send(&data, 1, MPI_INT, 0, 0, comm3);
IF_VERBOSE(("0: disconnecting.\n"));
MPI_Comm_disconnect(&comm1);
MPI_Comm_disconnect(&comm2);
MPI_Comm_disconnect(&comm3);
} else if (rank == 1) {
IF_VERBOSE(("1: receiving port.\n"));
MPI_Recv(port1, MPI_MAX_PORT_NAME, MPI_CHAR, 0, 0, MPI_COMM_WORLD, &status);
IF_VERBOSE(("1: received port1: <%s>\n", port1));
IF_VERBOSE(("1: connecting.\n"));
MPI_Comm_connect(port1, MPI_INFO_NULL, 0, MPI_COMM_SELF, &comm1);
MPI_Recv(&data, 1, MPI_INT, 0, 0, comm1, &status);
if (data != 1) {
printf("Received %d from root when expecting 1\n", data);
fflush(stdout);
num_errors++;
}
IF_VERBOSE(("1: disconnecting.\n"));
MPI_Comm_disconnect(&comm1);
} else if (rank == 2) {
IF_VERBOSE(("2: receiving port.\n"));
MPI_Recv(port2, MPI_MAX_PORT_NAME, MPI_CHAR, 0, 0, MPI_COMM_WORLD, &status);
IF_VERBOSE(("2: received port2: <%s>\n", port2));
/* make sure process 1 has time to do the connect before this process
* attempts to connect */
MTestSleep(2);
IF_VERBOSE(("2: connecting.\n"));
MPI_Comm_connect(port2, MPI_INFO_NULL, 0, MPI_COMM_SELF, &comm2);
MPI_Recv(&data, 1, MPI_INT, 0, 0, comm2, &status);
if (data != 2) {
printf("Received %d from root when expecting 2\n", data);
fflush(stdout);
num_errors++;
}
IF_VERBOSE(("2: disconnecting.\n"));
MPI_Comm_disconnect(&comm2);
} else if (rank == 3) {
IF_VERBOSE(("3: receiving port.\n"));
MPI_Recv(port3, MPI_MAX_PORT_NAME, MPI_CHAR, 0, 0, MPI_COMM_WORLD, &status);
IF_VERBOSE(("2: received port2: <%s>\n", port2));
/* make sure process 1 and 2 have time to do the connect before this
* process attempts to connect */
MTestSleep(4);
IF_VERBOSE(("3: connecting.\n"));
MPI_Comm_connect(port3, MPI_INFO_NULL, 0, MPI_COMM_SELF, &comm3);
MPI_Recv(&data, 1, MPI_INT, 0, 0, comm3, &status);
if (data != 3) {
printf("Received %d from root when expecting 3\n", data);
fflush(stdout);
num_errors++;
}
IF_VERBOSE(("3: disconnecting.\n"));
MPI_Comm_disconnect(&comm3);
}
MPI_Barrier(MPI_COMM_WORLD);
MTest_Finalize(num_errors);
return MTestReturnValue(total_num_errors);
}
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