Open MPI logo

Open MPI Development Mailing List Archives

  |   Home   |   Support   |   FAQ   |  

This web mail archive is frozen.

This page is part of a frozen web archive of this mailing list.

You can still navigate around this archive, but know that no new mails have been added to it since July of 2016.

Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.

Subject: Re: [OMPI devel] Test suite of openMPI 1.7.3 fails
From: George Bosilca (bosilca_at_[hidden])
Date: 2013-12-15 12:03:24

We have a subtle bug with the atomic selection. On Linux the CMA support is linked together with the OPAL_ASSEMBLY_ARCH. If the BUILTIN atomics are enabled, and we are on Linux and we need to define the CMA syscall# (OMPI_BTL_SM_CMA_NEED_SYSCALL_DEFS), the opal/include/opal/sys/cma.h file is unable to make a decision as the underlying architecture is unknown (BUILTIN not being a valid architecture).

I think the solution is to have two versions of OPAL_ASSEMBLY_ARCH, one for knowing the architecture (excluding OMPI_SYNC_BUILTIN) and one for selecting the atomics (oncluding OMPI_SYNC_BUILTIN) we want to use. Fixing this however involves too much .m4 craftsmanship for my liking, so a volunteer will be needed…

Once fixed this should go into 1.7 together with 29915, 29916.


On Dec 12, 2013, at 13:31 , Philipp Thomas <pth_at_[hidden]> wrote:

> * Jeff Squyres (jsquyres) (jsquyres_at_[hidden]) [20131211 21:01]:
>> Can you send the opal_config.h file from your build tree?
>> This will help us look into what's going on.
> Attached.
> Note that it doesn't seem to be dependent on the build architecture as it
> fails at the same spot for all Archs that openSUSE supports (i586, x86-64,
> armv6l, armv7l ppc, ppc64).
> Philipp
> <opal_config.h>_______________________________________________
> devel mailing list
> devel_at_[hidden]