[Darshan-users] DARSHAN and Open MPI

[David Shrader]

Hello Phil,

Thank you for the quick reply! That stack trace on the Darshan list is 
eerily like the one I have...

I just used Open MPI 1.6.4 and it works for me and the application I'm 
using. Thanks again!
David

On 03/06/2013 11:01 AM, Phil Carns wrote:
> On 03/06/2013 12:41 PM, David Shrader wrote:
>> Hello All,
>>
>> I have DARSHAN working with our mvapich2 1.8 GNU installation and am 
>> trying to get it to work with a GNU build of Open MPI 1.6.3. The 
>> building of DARSHAN completes without a problem when I point it to a 
>> mpicc that is owned by Open MPI 1.6.3, but when I try to run an 
>> application compiled with Open MPI 1.6.3, I get a seg fault. I know, 
>> from reading the documentation, that DARSHAN seems to work easier 
>> with MPICH derivatives; that being said, are there any known issues 
>> and/or workarounds with trying to use Open MPI? Right now I am using 
>> a TOSS2 machine with dynamic linking (I currently can't do static 
>> linking due to a missing static version of a system library).
>>
>> Thank you!
>> David
>>
>
> Yes, there is actually a known issue with Darshan and LD_PRELOAD on 
> some versions of OpenMPI.  You have two options:
>
> a) update to OpenMPI 1.6.4
>
> b) apply the attached patch to Darshan (this is a workaround, only 
> tested with OpenMPI 1.6.3)
>
> For some more information on why Darshan won't LD_PRELOAD correctly on 
> OpenMPI 1.6.3, you can have a look at these mailing list threads from 
> each project:
>
>    http://www.open-mpi.org/community/lists/devel/2013/01/11917.php
> http://lists.mcs.anl.gov/pipermail/darshan-users/2013-January/000128.html
>
> I'll make a note to add this to the documentation; I should have done 
> that in the last Darshan release.
>
> -Phil
>
>
> _______________________________________________
> Darshan-users mailing list
> Darshan-users at lists.mcs.anl.gov
> https://lists.mcs.anl.gov/mailman/listinfo/darshan-users

-- 
David Shrader
SICORP, Inc
1350 Central Ave
Suite 104
Los Alamos, NM 87544
David.Shrader at SICORP.com

LANL contact information:

LANL #: 505-664-0996
LANL email: dshrader at lanl.gov

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/darshan-users/attachments/20130306/af06c0d8/attachment.html>