enMPI with traditional debuggers is a pain.
> > >> >From your error message it sounds that you have some memory
> allocation problem. Do you use dynamic memory allocation (allocate and then
> free)?
> > >>
> > >> I use display (printf()) command with M
and the task ID.
So that the master can know which task comes from which worker.
Any help or comment are appreciated.
thanks
Jack
June 30 2010
> Date: Thu, 1 Jul 2010 11:44:19 -0400
> From: g...@ldeo.columbia.edu
> To: us...@open-mpi.org
> Subject: Re: [OMPI users] Open MPI,
pen-mpi.org
Subject: Re: [OMPI users] Open MPI, Segmentation fault
Based on my experiences, I would FULLY endorse (100% agree with) David Zhang.
It is usually a coding or typo mistake.
At first, Ensure that array sizes and dimension are correct.
I experience that if openmpi is compiled with gnu co
from the start of your program, after a certain activitiy, say after 10
lines use print statement with STOP/EXIT , also printing processor rank.
If u get all the processors than its fine. Move this printing little ahead
and get printing again. Repeat this process until u reach the place of
fault.
am not familiar with OpenMPI.
>
> Would you please help me with how to ask openMPI to show where the fault
> occurs ?
>
> GNU debuger ?
>
> Any help is appreciated.
>
> thanks!!!
>
> Jack
>
> June 30 2010
>
> Date: Wed, 30 Jun 2010
preciated.
>
> thanks!!!
>
> Jack
>
> June 30 2010
>
> --
> Date: Wed, 30 Jun 2010 16:13:09 -0400
> From: amja...@gmail.com
> To: us...@open-mpi.org
> Subject: Re: [OMPI users] Open MPI, Segmentation fault
>
>
> Based on my experie
: us...@open-mpi.org
Subject: Re: [OMPI users] Open MPI, Segmentation fault
Based on my experiences, I would FULLY endorse (100% agree with) David Zhang.
It is usually a coding or typo mistake.
At first, Ensure that array sizes and dimension are correct.
I experience that if openmpi is compiled
Based on my experiences, I would FULLY endorse (100% agree with) David
Zhang.
It is usually a coding or typo mistake.
At first, Ensure that array sizes and dimension are correct.
I experience that if openmpi is compiled with gnu compilers (not with Intel)
then it also point outs the subroutine ex
When I got segmentation faults, it has always been my coding mistakes.
Perhaps your code is not robust against number of processes not divisible by
2?
On Wed, Jun 30, 2010 at 8:47 AM, Jack Bryan wrote:
> Dear All,
>
> I am using Open MPI, I got the error:
>
> n337:37664] *** Process received si
Dear All,
I am using Open MPI, I got the error:
n337:37664] *** Process received signal ***[n337:37664] Signal: Segmentation
fault (11)[n337:37664] Signal code: Address not mapped (1)[n337:37664] Failing
at address: 0x7fffcfe9[n337:37664] [ 0] /lib64/libpthread.so.0
[0x3c50e0e4c0][n337:376
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