[Darshan-users] darshan compiler wrappers

[Adrian Jackson]

Hi Phil,

Thanks for the reply. Yes, 3.2.1, understood (although Intel MPI is
MPICH based so I'll have a look and seeing if I can get the compiler
wrapers to work). We can go the dynamic route for now.

cheers

adrianj

On 22/06/2020 21:57, Carns, Philip H. wrote:
> Hi Adrian,
> 
> Unfortunately the compiler wrappers will only work for MPICH and it's
> variants.
> 
> Are you using Darshan 3.2.1?
> 
> Intel's MPI most likely produces dynamically-linked executables by
> default.  So broadly speaking, there are going to be two options to get
> things working.  The first is to get the Darshan linker options
> displayed by `darshan-config --dyn-ld-flags` added to your link line,
> either explicitly, or by finding a way to add them implicitly (as the
> auto-generated MPICH wrappers would have done).
> 
> The second optoin would be to leave the compilation unmodified and
> instead instrument with Darshan at runtime by LD_PRELOAD'ing
> libdarshan.so when the executable is run.
> 
> There is a little bit of information about each approach available here:
> 
> https://www.mcs.anl.gov/research/projects/darshan/docs/darshan-runtime.html#_option_1_instrumenting_mpi_applications_at_compile_time
> 
> https://www.mcs.anl.gov/research/projects/darshan/docs/darshan-runtime.html#_option_2_instrumenting_mpi_applications_at_run_time
> 
> ... but we don't have an exact recipe for how to do this on Intel MPI. 
> If you have suggestions for how to pull this off (particularly option 1)
> it would be a good addition to our official documentation.  I think we
> have access to Intel MPI on some systems here at ANL to help test, but
> we don't have much expertise with it yet.
> 
> thanks,
> -Phil
> ------------------------------------------------------------------------
> *From:* Darshan-users <darshan-users-bounces at lists.mcs.anl.gov> on
> behalf of Adrian Jackson <a.jackson at epcc.ed.ac.uk>
> *Sent:* Friday, June 19, 2020 1:49 PM
> *To:* darshan-users at lists.mcs.anl.gov <darshan-users at lists.mcs.anl.gov>
> *Subject:* [Darshan-users] darshan compiler wrappers
>  
> Hi,
> 
> I was installing Darshan on a system with Intel MPI and was wanting to
> build the compiler wrappers with the darshan-gen-cc.pl, etc... files.
> However, if I try to run:
> 
>  ./darshan-gen-cc.pl
> /opt/intel/compilers_and_libraries_2019.3.199/linux/mpi/intel64/bin/mpicc --output
> mpicc.darshan
> 
> I just get:
> 
> Error: faulty output from
> /opt/intel/compilers_and_libraries_2019.3.199/linux/mpi/intel64/bin/mpicc with
> -show.
> 
> Am I doing something wrong?
> 
> cheers
> 
> adrianj
> --
> Tel: +44 131 6506470 skype: remoteadrianj
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