[Llvm-bgq-discuss] Details behind MPI wrapper for bgclang++

[Jeff Hammond]

IBM does not provide MPI builds as part of the driver because they do
not - and are not required to - provide LLVM builds of MPI.

ALCF can provide /home/projects/pami/llvm/mpi.... if you want an MPI
build using LLVM.  I will do this next week during MiraCon as part of
building MPICH2 1.5 + IBM patches from source.

Best,

Jeff

On Thu, Feb 28, 2013 at 6:56 PM, Jack Poulson <jack.poulson at gmail.com> wrote:
> Hello All,
>
> I am trying to run a C++11 code on BGQ and have been running into strange
> sporadic segfaults with non-helpful stack traces. I started looking through
> the details of the   driver /home/projects/llvm/mpi/clang/bin/mpicxx and was
> surprised by the 31st line:
>     prefix=/bgsys/drivers/ppcfloor/comm/gcc
> When I look in the /bgsys/drivers/ppcfloor/comm folder, I notice that there
> are directories for gcc and xl, but none for Clang. Is there some clear
> explanation for this?
>
> Thanks!
> Jack
>
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-- 
Jeff Hammond
Argonne Leadership Computing Facility
University of Chicago Computation Institute
jhammond at alcf.anl.gov / (630) 252-5381
http://www.linkedin.com/in/jeffhammond
https://wiki.alcf.anl.gov/parts/index.php/User:Jhammond