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Extend MPI_COMM_TYPE_HW_GUIDED test to include MPI_UNDEFINED #21

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Aug 24, 2022
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Extend MPI_COMM_TYPE_HW_GUIDED test to include MPI_UNDEFINED #21

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56 changes: 56 additions & 0 deletions comm_split_type/cmsplit_type.c
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,8 @@ int main(int argc, char *argv[])
MPI_Comm comm;
MPI_Info info;
int ret;
int value = 0;
int expected_value = 3;

MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &mcw_rank);
Expand Down Expand Up @@ -181,6 +183,60 @@ int main(int argc, char *argv[])

sync_hr();

/*
* Test MPI_COMM_TYPE_HW_GUIDED:
* - Test with "mpi_hw_resource_type" = "mpi_shared_memory"
* - Mix in some MPI_UNDEFINED values to make sure those are handled properly
*/
expected_value = 3;
if (expected_value > mcw_size) {
expected_value = mcw_size;
}
MPI_Info_create(&info);
MPI_Info_set(info, "mpi_hw_resource_type", "mpi_shared_memory");
if (mcw_rank == 0 && verbose) {
printf("MPI_COMM_TYPE_HW_GUIDED: Trying MPI Standard value %s with some MPI_UNDEFINED\n", "mpi_shared_memory");
}
if (mcw_rank < expected_value) {
ret = MPI_Comm_split_type(MPI_COMM_WORLD, MPI_COMM_TYPE_HW_GUIDED, 0, info, &comm);
} else {
ret = MPI_Comm_split_type(MPI_COMM_WORLD, MPI_UNDEFINED, 0, info, &comm);
}
if (ret != MPI_SUCCESS) {
printf("MPI_COMM_TYPE_HW_GUIDED (%s) failed\n", split_topo[i]);
errs++;
} else if (comm != MPI_COMM_NULL) {
MPI_Comm_rank(comm, &rank);
MPI_Comm_size(comm, &size);
value = 1;
if (rank == 0 && verbose) {
printf("MPI_COMM_TYPE_HW_GUIDED (%s): %d/%d Created shared subcommunicator of size %d\n",
"mpi_shared_memory", mcw_rank, mcw_size, size);
}
MPI_Comm_free(&comm);
} else if (verbose) {
value = 0;
printf("MPI_COMM_TYPE_HW_GUIDED (%s): %d/%d Returned MPI_COMM_NULL\n",
"mpi_shared_memory", mcw_rank, mcw_size);
}
MPI_Info_free(&info);

if (mcw_rank == 0) {
MPI_Reduce(MPI_IN_PLACE, &value, 1, MPI_INT, MPI_SUM, 0, MPI_COMM_WORLD);
if (expected_value != value) {
printf("MPI_COMM_TYPE_HW_GUIDED (%s): Failed: Verify expected %d == actual %d\n",
"mpi_shared_memory", expected_value, value);
} else if (verbose) {
printf("MPI_COMM_TYPE_HW_GUIDED (%s): Passed: Verify expected %d == actual %d\n",
"mpi_shared_memory", expected_value, value);
}
} else {
MPI_Reduce(&value, NULL, 1, MPI_INT, MPI_SUM, 0, MPI_COMM_WORLD);
}
MPI_Barrier(MPI_COMM_WORLD);

sync_hr();

/*
* Test MPI_COMM_TYPE_HW_GUIDED:
* - info with correct key, but different values a different ranks, it must throw an error
Expand Down