int
main( int argc, char **argv)
{
int rank, size, i, recv_flag, ret, passed;
MPI_Status Status;
char message[17];
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
if (rank == 0) {
Test_Init("barrier", rank);
/* Receive the startup messages from each of the
other clients */
for (i = 0; i < size - 1; i++) {
MPI_Recv(message, 17, MPI_CHAR, MPI_ANY_SOURCE, 2000,
MPI_COMM_WORLD, &Status);
}
/* Now use Iprobe to make sure no more messages arive for a
while */
passed = 1;
for (i = 0; i < WAIT_TIMES; i++){
recv_flag = 0;
MPI_Iprobe(MPI_ANY_SOURCE, 2000, MPI_COMM_WORLD,
&recv_flag, &Status);
if (recv_flag)
passed = 0;
}
if (passed)
Test_Passed("Barrier Test 1");
else
Test_Failed("Barrier Test 1");
/* Now go into the barrier myself */
MPI_Barrier(MPI_COMM_WORLD);
/* And get everyones message who came out */
for (i = 0; i < size - 1; i++) {
MPI_Recv(message, 13, MPI_CHAR, MPI_ANY_SOURCE, 2000,
MPI_COMM_WORLD, &Status);
}
/* Now use Iprobe to make sure no more messages arive for a
while */
passed = 1;
for (i = 0; i < WAIT_TIMES; i++){
recv_flag = 0;
MPI_Iprobe(MPI_ANY_SOURCE, 2000, MPI_COMM_WORLD,
&recv_flag, &Status);
if (recv_flag)
passed = 0;
}
if (passed)
Test_Passed("Barrier Test 2");
else
Test_Failed("Barrier Test 2");
Test_Waitforall( );
ret = Summarize_Test_Results();
Test_Finalize();
MPI_Finalize();
return ret;
} else {
MPI_Send((char*)"Entering Barrier", 17, MPI_CHAR, 0, 2000, MPI_COMM_WORLD);
MPI_Barrier(MPI_COMM_WORLD);
MPI_Send((char*)"Past Barrier", 13, MPI_CHAR, 0, 2000, MPI_COMM_WORLD);
Test_Waitforall( );
MPI_Finalize();
return 0;
}
}
int main( int argc, char **argv )
{
int rank, size, ret, passed, i, *test_array;
int stride, count, root;
MPI_Datatype newtype;
MPI_Comm comm = MPI_COMM_WORLD;
/* Set up MPI */
MPI_Init(&argc, &argv);
MPI_Comm_rank(comm, &rank);
/* Setup the tests */
Test_Init("bcastvec", rank);
/* Allow for additional communicators */
MPI_Comm_size(comm, &size);
/* MPI_Comm_rank(comm, &rank); */
stride = (rank + 1);
test_array = (int *)malloc(size*stride*sizeof(int));
/* Create the vector datatype EXCEPT for process 0 (vector of
stride 1 is contiguous) */
if (rank > 0) {
count = 1;
MPI_Type_vector( size, 1, stride, MPI_INT, &newtype);
MPI_Type_commit( &newtype );
}
else {
count = size;
newtype = MPI_INT;
}
/* Perform the test. Each process in turn becomes the root.
After each operation, check that nothing has gone wrong */
passed = 1;
for (root = 0; root < size; root++) {
/* Fill the array with -1 for unset, rank + i * size for set */
for (i=0; i<size*stride; i++) test_array[i] = -1;
if (rank == root)
for (i=0; i<size; i++) test_array[i*stride] = rank + i * size;
MPI_Bcast( test_array, count, newtype, root, comm );
for (i=0; i<size; i++) {
if (test_array[i*stride] != root + i * size) {
passed = 0;
}
}
}
free(test_array);
if (rank != 0) MPI_Type_free( &newtype );
if (!passed)
Test_Failed("Simple Broadcast test with datatypes");
else {
if (rank == 0)
Test_Passed("Simple Broadcast test with datatypes");
}
/* Close down the tests */
if (rank == 0)
ret = Summarize_Test_Results();
else {
ret = 0;
}
Test_Finalize();
/* Close down MPI */
Test_Waitforall( );
MPI_Finalize();
return ret;
}
