[MPICH] problem net_send: could not write to fd=5, errno = 32

[Luiz Mendes]

Hi Geoff, Rajeev, Antony

Yes, i forgot to write.
But problems continuing to be the same with MPI_Finalize().

After, I was editing that code and i saw that if a process execute
MPI_Recv() that it wasnt destinated to itselft the problem arises.

well, i was thinking that if a process analize one MPI_Recv not destinated
to it, the process simply would ignore it, but this, until this moment, it
seems to be wrong.

thanks, sorry for foolish errors.
Luiz Mendes


2007/1/15, Rajeev Thakur <thakur at mcs.anl.gov>:
>
>  You need to add an MPI_Finalize.
>
> Rajeev
>
>  ------------------------------
> *From:* owner-mpich-discuss at mcs.anl.gov [mailto:
> owner-mpich-discuss at mcs.anl.gov] *On Behalf Of *Luiz Mendes
> *Sent:* Monday, January 15, 2007 12:22 PM
> *To:* mpich-discuss at mcs.anl.gov
> *Cc:* Geoff Jacobs
> *Subject:* Re: [MPICH] problem net_send: could not write to fd=5, errno =
> 32
>
> Hi Geoff,
>
> i dont know Geoff, the code is below:
>
> #include "mpi.h"
> #include <stdio.h>
> #include <string.h>
> int main(int argc, char* argv[])
> {
>     char mensagem[32];
>     int numprocs, rank;
>     MPI_Status stat;
>     MPI_Init(&argc,&argv);
>     MPI_Comm_size(MPI_COMM_WORLD,&numprocs);
>     MPI_Comm_rank(MPI_COMM_WORLD,&rank);
>     if(rank==0)
>     {
>         sprintf(mensagem, "Message Text");
>         MPI_Send(mensagem, 32, MPI_CHAR, 1, 0, MPI_COMM_WORLD);
>     }
>     else
>     {
>         MPI_Recv(mensagem, 32, MPI_CHAR, 0, 0, MPI_COMM_WORLD, &stat);
>     }
> }
>
> when i run with mpirun -np 2 it works, and when i run with mpirun -np 3 i
> doesnt run and relates the following message below
>
> p2_23214:  p4_error: net_recv read:  probable EOF on socket: 1
> bm_list_23184: (0.507200) wakeup_slave: unable to interrupt slave 0 pid
> 23183
> rm_l_1_23213: (0.257494) net_send: could not write to fd=6, errno = 9
> rm_l_1_23213:  p4_error: net_send write: -1
>     p4_error: latest msg from perror: Bad file descriptor
> rm_l_2_23236: (0.045590) net_send: could not write to fd=5, errno = 32
> p2_23214: (2.046247) net_send: could not write to fd=5, errno = 32
>
>
> What it could  be?
>
> I installed MPICH 1.2.7p1 with mode p4 i think. I am trying to run it on
> two PCS. I installed MPI in /usr/share/MPI-1 folder and share this one by
> NFS server with another PC.
>
> Well i was trying to run another standard example simpleio.c, and it
> doesnt store things in other PC.
>
> What is happening?
>
> Thanks,
> Luiz Mendes
>
> 2007/1/15, Geoff Jacobs <gdjacobs at gmail.com>:
> >
> > Luiz Mendes wrote:
> > > HI all,
> > >
> > > i would like to know whats the reason for this error
> > >
> > > net_send: could not write to fd=5, errno = 32
> > >
> > > what should i do to correct this? I searched for this error in
> > internet
> > > but i didnt find anything about.
> > >
> > > Its strange, because this error is caused by the increase of number of
> > > processes in the execution of mpi program.
> > >
> > > Could you help me?
> > >
> > > Thanks
> > > Luiz Mendes
> > Segfault?
> >
> > --
> > Geoffrey D. Jacobs
> >
> > Go to the Chinese Restaurant,
> > Order the Special
> >
>
>
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