[MPICH] debug message?

[Wei-keng Liao]

I got some messages from standard output when my test program called 
MPI_Comm_split(), without MPI_Comm_free() to free the newly created 
communicator. The code that reproduces the message is provided below. The 
messages are

% mpiexec -l -n 4 a.out 
0: [0] 32 at [0x00000000006daa78], mpid_vc.c[62] 
1: [1] 32 at [0x00000000006dc3b8], mpid_vc.c[62] 
2: [2] 32 at [0x00000000006dd648], mpid_vc.c[62] 
3: [3] 32 at [0x00000000006dd648], mpid_vc.c[62]

No such messages if MPI_Comm_free() is called, though.

I also found that this only happens when I configured MPICH2-1.0.6p1 with
"--enable-g=all --enable-debuginfo".

Some other messages also appear for different calls, like a data type is 
not freed by the program.

Wei-keng


----   test code in C ----
#include <stdio.h>
#include <mpi.h>
int main(int argc, char **argv) {
    int rank, np, new_np, color;
    MPI_Comm new_comm;

    MPI_Init(&argc, &argv);
    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    MPI_Comm_size(MPI_COMM_WORLD, &np);

    color = 1;
    if (rank < 2) color = 0;
    MPI_Comm_split(MPI_COMM_WORLD, color, rank, &new_comm);

    /* MPI_Comm_free(&new_comm); */

    MPI_Finalize();
    return 0;
}