Thanks Jeff!

but in this line:

https://github.com/open-mpi/ompi/blob/master/config/ompi_check_mxm.m4#L36

ompi_check_mxm_libdir gets value if with_mxm was passed



On Tue, May 26, 2015 at 6:59 PM, Jeff Squyres (jsquyres) <jsquy...@cisco.com
> wrote:

> This line:
>
>
> https://github.com/open-mpi/ompi/blob/master/config/ompi_check_mxm.m4#L41
>
> doesn't check to see if $ompi_check_mxm_libdir is empty.
>
>
> > On May 26, 2015, at 11:50 AM, Mike Dubman <mi...@dev.mellanox.co.il>
> wrote:
> >
> > David,
> > Could you please send me your config.log file?
> >
> > Looking into config/ompi_check_mxm.m4 macro I don`t understand how it
> could happen.
> >
> > Thanks a lot.
> >
> > On Tue, May 26, 2015 at 6:41 PM, Mike Dubman <mi...@dev.mellanox.co.il>
> wrote:
> > Hello David,
> > Thanks for info and patch - will fix ompi configure logic with your
> patch.
> >
> > mxm can be installed in the system and user spaces - both are valid and
> supported logic.
> >
> > M
> >
> > On Tue, May 26, 2015 at 5:50 PM, David Shrader <dshra...@lanl.gov>
> wrote:
> > Hello Mike,
> >
> > This particular instance of mxm was installed using rpms that were
> re-rolled by our admins. I'm not 100% sure where they got them (HPCx or
> somewhere else). I myself am not using HPCx. Is there any particular reason
> why mxm shouldn't be in system space? If there is, I'll share it with our
> admins and try to get the install location corrected.
> >
> > As for what is causing the extra -L, it does look like an empty variable
> is used without checking that it is empty in configure. Line 246117 in the
> configure script provided by the openmpi-1.8.5.tar.bz2 tarball has this:
> >
> > ompi_check_mxm_extra_libs="-L$ompi_check_mxm_libdir"
> >
> > By invoking configure with '/bin/sh -x ./configure ...' and changing PS4
> to output line numbers, I saw that line 246117 was setting
> ompi_check_mxm_extra_libs to just "-L". It turns out that configure does
> this in three separate locations. I put a check around all three instances
> like this:
> >
> > if test ! -z "$ompi_check_mxm_extra_libs"; then
> >   ompi_check_mxm_extra_libs="-L$ompi_check_mxm_libdir"
> > fi
> >
> > And the spurious '-L' disappeared from the linking commands and make
> completed fine.
> >
> > So, it looks like there are two solutions: move the install location of
> mxm to not be in system-space or modify configure. Which one would be the
> better one for me to pursue?
> >
> > Thanks,
> > David
> >
> >
> > On 05/23/2015 12:05 AM, Mike Dubman wrote:
> >> Hi,
> >>
> >> How mxm was installed? by copying?
> >>
> >> The rpm based installation places mxm into /opt/mellanox/mxm and not
> into /usr/lib64/libmxm.so.
> >>
> >> Do you use HPCx (pack of OMPI and MXM and FCA)?
> >> You can download HPCX, extract it anywhere and compile OMPI pointing to
> mxm location under HPCX.
> >>
> >> Also, HPCx contains rpms for mxm and fca.
> >>
> >>
> >> M
> >>
> >> On Sat, May 23, 2015 at 1:07 AM, David Shrader <dshra...@lanl.gov>
> wrote:
> >> Hello,
> >>
> >> I'm getting a spurious '-L' flag when I have mxm installed in
> system-space (/usr/lib64/libmxm.so) which is causing an error at link time
> during make:
> >>
> >> ...output snipped...
> >> /bin/sh ../../../../libtool  --tag=CC   --mode=link gcc -std=gnu99 -O3
> -DNDEBUG -I/opt/panfs/include -finline-functions -fno-strict-aliasing
> -pthread -module -avoid-version   -o libmca_mtl_mxm.la  mtl_mxm.lo
> mtl_mxm_cancel.lo mtl_mxm_component.lo mtl_mxm_endpoint.lo mtl_mxm_probe.lo
> mtl_mxm_recv.lo mtl_mxm_send.lo -lmxm -L -lrt -lm -lutil
> >> libtool: link: require no space between `-L' and `-lrt'
> >> make[2]: *** [libmca_mtl_mxm.la] Error 1
> >> make[2]: Leaving directory
> `/turquoise/usr/projects/hpctools/dshrader/hpcsoft/openmpi/1.8.5/openmpi-1.8.5/ompi/mca/mtl/mxm'
> >> make[1]: *** [all-recursive] Error 1
> >> make[1]: Leaving directory
> `/turquoise/usr/projects/hpctools/dshrader/hpcsoft/openmpi/1.8.5/openmpi-1.8.5/ompi'
> >> make: *** [all-recursive] Error 1
> >>
> >> If I I use --with-mxm=no, then this error doesn't occur (as expected as
> the mxm component isn't touched). Has anyone run in to this before?
> >>
> >> Here is my configure line:
> >>
> >> ./configure --disable-silent-rules
> --with-platform=contrib/platform/lanl/toss/optimized-panasas --prefix=...
> >>
> >> I wonder if there is an empty variable that should contain the
> directory libmxm is in somewhere in configure since no directory is passed
> to --with-mxm which is then paired with a "-L". I think I'll go through the
> configure script while waiting to see if anyone else has run in to this.
> >>
> >> Thank you for any and all help,
> >> David
> >>
> >> --
> >> David Shrader
> >> HPC-3 High Performance Computer Systems
> >> Los Alamos National Lab
> >> Email: dshrader <at> lanl.gov
> >>
> >> _______________________________________________
> >> users mailing list
> >> us...@open-mpi.org
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> >> Link to this post:
> http://www.open-mpi.org/community/lists/users/2015/05/26904.php
> >>
> >>
> >>
> >> --
> >>
> >> Kind Regards,
> >>
> >> M.
> >>
> >>
> >> _______________________________________________
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> >>
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> >>
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> >>
> >> Link to this post:
> >> http://www.open-mpi.org/community/lists/users/2015/05/26905.php
> >
> > --
> > David Shrader
> > HPC-3 High Performance Computer Systems
> > Los Alamos National Lab
> > Email: dshrader <at>
> > lanl.gov
> >
> > _______________________________________________
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> >
> >
> >
> > --
> >
> > Kind Regards,
> >
> > M.
> >
> >
> >
> > --
> >
> > Kind Regards,
> >
> > M.
> > _______________________________________________
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>
>
> --
> Jeff Squyres
> jsquy...@cisco.com
> For corporate legal information go to:
> http://www.cisco.com/web/about/doing_business/legal/cri/
>
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>



-- 

Kind Regards,

M.

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