[mpich-discuss] Strange error

[Alejandro Allievi]

Thanks for the reply.

Here goes a code snippet containing the part that generates the error

              MPI_Recv(greeting, MAX_STRING, MPI_CHAR, MPI_ANY_SOURCE,
MPI_ANY_TAG , MPI_COMM_WORLD, &status);

//These are fine
              printf("\nSource of this message is process: %d\n",
status.MPI_SOURCE);
              printf("Tag of this message is: %d\n", status.MPI_TAG);

//This is the problem. Not quite sure if correct though.
              MPI_Error_string( status.MPI_ERROR , mystring , &len );
              printf("Tag of this message is: %d %s\n", status.MPI_ERROR ,
mystring );

//These are fine too
              MPI_Get_count(&status , MPI_CHAR , &count);
              printf("Size of this message is: %d MPI_CHAR", count);

Alejandro


On Tue, Oct 9, 2012 at 3:38 PM, Dave Goodell <goodell at mcs.anl.gov> wrote:

> Can you post some example code showing how you are calling MPI_Recv and
> how you are processing the error code/class/message?  It's easy to get
> confused by the error handling conventions of the MPI standard, and this
> sounds like either user error or memory corruption, depending on what code
> you post.
>
> -Dave
>
> On Oct 9, 2012, at 11:55 AM CDT, Alejandro Allievi wrote:
>
> > Hi,
> >
> > I'm getting the following error: "No MPI error, error stack:
> (unknown)(): No MPI error"
> > returned by "status.MPI_ERROR" in "status" variable  in MPI_Recv.
> However, there seems
> > to be no error. Does anybody know why the "error stack: (unknown)(): No
> MPI error"
> >
> > Thanks for any help.
> >
> > Alejandro
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-- 
Alejandro Allievi
http://www.ace-net.ca/wiki/Alejandro_Allievi

"Tenez, mon ami, si vous y pensez bien, vous trouverez qu'en tout, notre
véritable sentiment n'est pas celui dans lequel nous n'avons jamais
vacillé; mais celui auquel nous sommes le plus habituellement revenus".
Denis Diderot.

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