[mpich-discuss] Enable Debugging MPICH

[Halim Amer]

I don't see why you couldn't step into MPI_Get_processor_name, other 
than you are linking to the wrong MPI implementation that doesn't have 
debug symbols.

I tested your example with --enable-g=all when building MPICH and it was 
sufficient to step into MPI_Get_processor_name.

--Halim

On 5/8/16 6:56 AM, 冰 wrote:
> Hi,
> I want to use |gdb| to step into the code to see what's going on inside
> the code, for example my code as below, I set a break at the line
> MPI_Get_processor_name (processor_name, &namelen), I want to step into
> MPI_Get_processor_name, I configure with |--enable-g=all and
> |--enable-fast=O0, but gdb cann't step into MPI_Get_processor_name, it
> steps into fprintf, what should I do?
>
> #include "mpi.h"
> #include <stdio.h>
> int main (int argc, char **argv)
> {
> int myid, numprocs;
> int namelen;
> char processor_name[MPI_MAX_PROCESSOR_NAME];
>
> MPI_Init (&argc, &argv);
> MPI_Comm_rank (MPI_COMM_WORLD, &myid);
> MPI_Comm_size (MPI_COMM_WORLD, &numprocs);
> MPI_Get_processor_name (processor_name, &namelen);
> fprintf (stderr, "Hello World! Process %d of %d on %s\n", myid,
> numprocs, processor_name);
> MPI_Finalize ();
> return 0;
> }
>
>
>
>
>
>
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