[Darshan-users] Darshan and Intel MPI (x86_64)

[Harr, Cameron Contractor, SAIC]

Interface is all Fortran calls, not using MPI_IO.

On 02/20/2012 11:48 AM, Kevin Harms wrote:
>    what interfaces are you using for I/O? Fortran calls, MPI_File_* routines, something else?
>
> kevin
>
> On Feb 20, 2012, at 1:42 PM, Harr, Cameron Contractor, SAIC wrote:
>
>> Thanks Phil. Using the PRELOAD, I can get a sample output with one of the test C programs that comes with the Darshan source; however, I still don't get any output from my executable. Let me ask a basic question: My app is all Fortran; do I need to compile in any support into Darshan for Fortran compatibility? I see that it should support Fortran, but perhaps I'm doing something wrong.
>>
>> On 02/20/2012 10:44 AM, Phil Carns wrote:
>>> I don't have any first-hand experience with Intel MPI, but in principle it should work.
>>>
>>> Does your MPI compiler produces dynamic executables by default?  If so, can you try leaving your executable/binary unmodified and load the libdarshan.so library at runtime using the LD_PRELOAD environment variable, rather than directly linking it to your application?  There is some more detail about this approach on this page:
>>>
>>> http://wiki.mcs.anl.gov/Darshan/index.php/Dynamic_linking
>>>
>>> thanks,
>>> -Phil
>>>
>>> On 02/20/2012 01:28 PM, Harr, Cameron Contractor, SAIC wrote:
>>>> I'm trying to get Darshan running on a RedHat/X86_64 cluster with a few different flavors of MPI available. I'm most recently trying Intel MPI and gfortran (Intel Compilers didn't seem to work) and after a fair bit of tweaking, got the executable recompiled with libdarshan.so successfully linked in. In my job run script, I verify that libdarshan is linked in and the job runs to completion; however no output is generated. I also tried setting DARSHAN_INTERNAL_TIMING=1, but still no output. Should I be able to use Intel MPI and/or is there a place that documents which MPI stacks are supported?
>>>>
>>>>
>>>>
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