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Subject: Re: [OMPI devel] r27078 and OMPI build
From: Paul Hargrove (phhargrove_at_[hidden])
Date: 2012-08-24 22:25:48


I can add x86-64/Linux/SS12.3 to the NOT-showing-the-problem list.

-Paul

On Fri, Aug 24, 2012 at 6:47 PM, Eugene Loh <eugene.loh_at_[hidden]> wrote:

> **
> Indeed. Sorry to jump late back into the melee. I did reproduce the
> problem on a second SPARC system, to answer Ralph's earlier question; I
> don't know how interesting that is given that it's very similar to the
> original system. And, to corroborate Paul's AMD observation, we have an
> x86/Solaris/Studio system that is *not* seeing the problem. Thanks to Paul
> for identifying the likely cause of the problem.
>
> On 8/24/2012 6:32 PM, Ralph Castain wrote:
>
> Thanks Paul!! That is very helpful - hopefully the ORNL folks can now fix
> the problem.
>
> On Aug 24, 2012, at 6:29 PM, Paul Hargrove <phhargrove_at_[hidden]> wrote:
>
> I *can* reproduce the problem on SPARC/Solaris-10 with the SS12.3
> compiler and an ALMOST vanilla configure:
> $ [path_to]configure \
> --prefix=[blah] CC=cc CXX=CC F77=f77 FC=f90 \
> CFLAGS="-m64" --with-wrapper-cflags="-m64" CXXFLAGS="-m64"
> --with-wrapper-cxxflags="-m64" \
> FFLAGS="-m64" --with-wrapper-fflags="-m64" FCFLAGS="-m64"
> --with-wrapper-fcflags="-m64" \
> CXXFLAGS="-m64 -library=stlport4"
>
> I did NOT manage to reproduce on AMD64/Solaris-11, which completed a
> build w/ VT disabled.
> Unfortunately I have neither SPARC/Solaris-11 nor
> AMD64/Solaris-10 readily available to disambiguate the key factor.
> Hopefully it is enough to know that the problem is reproducible w/o
> Oracle's massive configure commandline.
>
>
> The build isn't complete, but I can already see that the symbol has
> "leaked" into libmpi:
>
> $ grep -arl mca_coll_ml_memsync_intra BLD/
> BLD/ompi/mca/bcol/.libs/libmca_bcol.a
> BLD/ompi/mca/bcol/base/.libs/bcol_base_open.o
> BLD/ompi/.libs/libmpi.so.0.0.0
> BLD/ompi/.libs/libmpi.so
> BLD/ompi/.libs/libmpi.so.0
>
> It is referenced by mca_coll_ml_generic_collectives_launcher:
>
> $ nm BLD/ompi/.libs/libmpi.so.0.0.0 | grep -B1 mca_coll_ml_memsync_intra
> 00000000006a6088 t mca_coll_ml_generic_collectives_launcher
> U mca_coll_ml_memsync_intra
>
> This is coming from libmca_bcol.a:
> $ nm BLD/ompi/mca/bcol/.libs/libmca_bcol.a | grep -B1
> mca_coll_ml_memsync_intra
> 0000000000005248 t mca_coll_ml_generic_collectives_launcher
> U mca_coll_ml_memsync_intra
>
>
> This appears to be via the following chain of calls within coll_ml.h:
>
> mca_coll_ml_generic_collectives_launcher
> mca_coll_ml_task_completion_processing
> coll_ml_fragment_completion_processing
> mca_coll_ml_buffer_recycling
> mca_coll_ml_memsync_intra
>
> All of which are marked as "static
> inline __opal_attribute_always_inline__".
>
> -Paul
>
>
> On Fri, Aug 24, 2012 at 4:55 PM, Paul Hargrove <phhargrove_at_[hidden]> wrote:
>
>> OK, I have a vanilla configure+make running on both SPARC/Solaris-10 and
>> AMD64/Solaris-11.
>> I am using the 12.3 Oracle compilers in both cases to match the original
>> report.
>> I'll post the results when they complete.
>>
>> In the meantime, I took a quick look at the code and have a pretty
>> reasonable guess as to the cause.
>> Looking at ompi/mca/coll/ml/coll_ml.h I see:
>>
>> 827 int mca_coll_ml_memsync_intra(mca_coll_ml_module_t *module, int
>> bank_index);
>> [...]
>> 996 static inline __opal_attribute_always_inline__
>> 997 int
>> mca_coll_ml_buffer_recycling(mca_coll_ml_collective_operation_progress_t
>> *ml_request)
>> 998 {
>> [...]
>> 1023 rc = mca_coll_ml_memsync_intra(ml_module,
>> ml_memblock->memsync_counter);
>> [...]
>> 1041 }
>>
>> Based on past experience w/ the Sun/Oracle compilers on another project
>> (See http://bugzilla.hcs.ufl.edu/cgi-bin/bugzilla3/show_bug.cgi?id=193 ),
>> I suspect that this static-inline-always function is being emitted by the
>> compiler in every object which includes this header even if they don't call
>> it.. The call on line 1023 then results in the undefined reference
>> to mca_coll_ml_memsync_intra. Basically it is not safe for an inline
>> function in a header to call an extern function that isn't available to
>> every object that includes the header REGARDLESS of whether the object
>> invokes the inline function or not.
>>
>> -Paul
>>
>>
>>
>> On Fri, Aug 24, 2012 at 4:40 PM, Ralph Castain <rhc_at_[hidden]> wrote:
>>
>>> Oracle uses an abysmally complicated configure line, but nearly all of
>>> it is irrelevant to the problem here. For this, I would suggest just doing
>>> a vanilla ./configure - if the component gets pulled into libmpi, then we
>>> know there is a problem.
>>>
>>> Thanks!
>>>
>>> Just FYI: here is there actual configure line, just in case you spot
>>> something problematic:
>>>
>>> CC=cc CXX=CC F77=f77 FC=f90 --with-openib --enable-openib-connectx-xrc --without-udapl
>>> --disable-openib-ibcm --enable-btl-openib-failover --without-dtrace --enable-heterogeneous
>>> --enable-cxx-exceptions --enable-shared --enable-orterun-prefix-by-default --with-sge
>>> --enable-mpi-f90 --with-mpi-f90-size=small --disable-peruse --disable-state
>>> --disable-mpi-thread-multiple --disable-debug --disable-mem-debug --disable-mem-profile
>>> CFLAGS="-xtarget=ultra3 -m32 -xarch=sparcvis2 -xprefetch -xprefetch_level=2 -xvector=lib -Qoption
>>> cg -xregs=no%appl -xdepend=yes -xbuiltin=%all -xO5" CXXFLAGS="-xtarget=ultra3 -m32
>>> -xarch=sparcvis2 -xprefetch -xprefetch_level=2 -xvector=lib -Qoption cg -xregs=no%appl -xdepend=yes
>>> -xbuiltin=%all -xO5 -Bstatic -lCrun -lCstd -Bdynamic" FFLAGS="-xtarget=ultra3 -m32 -xarch=sparcvis2
>>> -xprefetch -xprefetch_level=2 -xvector=lib -Qoption cg -xregs=no%appl -stackvar -xO5"
>>> FCFLAGS="-xtarget=ultra3 -m32 -xarch=sparcvis2 -xprefetch -xprefetch_level=2 -xvector=lib -Qoption
>>> cg -xregs=no%appl -stackvar -xO5"
>>> --prefix=/workspace/euloh/hpc/mtt-scratch/burl-ct-t2k-3/ompi-tarball-testing/installs/JA08/install
>>> --mandir=${prefix}/man --bindir=${prefix}/bin --libdir=${prefix}/lib
>>> --includedir=${prefix}/include --with-tm=/ws/ompi-tools/orte/torque/current/shared-install32
>>> --enable-contrib-no-build=vt --with-package-string="Oracle Message Passing Toolkit "
>>> --with-ident-string="@(#)RELEASE VERSION 1.9openmpi-1.5.4-r1.9a1r27092"
>>>
>>>
>>> and the error he gets is:
>>>
>>> make[2]: Entering directory
>>> `/workspace/euloh/hpc/mtt-scratch/burl-ct-t2k-3/ompi-tarball-testing/mpi-install/s3rI/src/openmpi-1.9a1r27092/ompi/tools/ompi_info'
>>> CCLD ompi_info
>>> Undefined first referenced
>>> symbol in file
>>> mca_coll_ml_memsync_intra ../../../ompi/.libs/libmpi.so
>>> ld: fatal: symbol referencing errors. No output written to .libs/ompi_info
>>> make[2]: *** [ompi_info] Error 2
>>> make[2]: Leaving directory
>>> `/workspace/euloh/hpc/mtt-scratch/burl-ct-t2k-3/ompi-tarball-testing/mpi-install/s3rI/src/openmpi-1.9a1r27092/ompi/tools/ompi_info'
>>> make[1]: *** [install-recursive] Error 1
>>> make[1]: Leaving directory
>>> `/workspace/euloh/hpc/mtt-scratch/burl-ct-t2k-3/ompi-tarball-testing/mpi-install/s3rI/src/openmpi-1.9a1r27092/ompi'
>>> make: *** [install-recursive] Error 1
>>>
>>>
>>> On Aug 24, 2012, at 4:30 PM, Paul Hargrove <phhargrove_at_[hidden]> wrote:
>>>
>>> I have access to a few different Solaris machines and can offer to build
>>> the trunk if somebody tells me what configure flags are desired.
>>>
>>> -Paul
>>>
>>> On Fri, Aug 24, 2012 at 8:54 AM, Ralph Castain <rhc_at_[hidden]> wrote:
>>>
>>>> Eugene - can you confirm that this is only happening on the one Solaris
>>>> system? In other words, is this a general issue or something specific to
>>>> that one machine?
>>>>
>>>> I'm wondering because if it is just the one machine, then it might be
>>>> something strange about how it is setup - perhaps the version of Solaris,
>>>> or it is configuring --enable-static, or...
>>>>
>>>> Just trying to assess how general a problem this might be, and thus if
>>>> this should be a blocker or not.
>>>>
>>>> On Aug 24, 2012, at 8:00 AM, Eugene Loh <eugene.loh_at_[hidden]> wrote:
>>>>
>>>> > On 08/24/12 09:54, Shamis, Pavel wrote:
>>>> >> Maybe there is a chance to get direct access to this system ?
>>>> > No.
>>>> >
>>>> > But I'm attaching compressed log files from configure/make.
>>>> >
>>>> >
>>>> <tarball-of-log-files.tar.bz2>_______________________________________________
>>>> > devel mailing list
>>>> > devel_at_[hidden]
>>>> > http://www.open-mpi.org/mailman/listinfo.cgi/devel
>>>>
>>>>
>>>> _______________________________________________
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>>>> devel_at_[hidden]
>>>> http://www.open-mpi.org/mailman/listinfo.cgi/devel
>>>>
>>>
>>>
>>>
>>> --
>>> Paul H. Hargrove PHHargrove_at_[hidden]
>>> Future Technologies Group
>>> Computer and Data Sciences Department Tel: +1-510-495-2352
>>> Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
>>>
>>> _______________________________________________
>>> devel mailing list
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>>> http://www.open-mpi.org/mailman/listinfo.cgi/devel
>>>
>>>
>>>
>>> _______________________________________________
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>>> http://www.open-mpi.org/mailman/listinfo.cgi/devel
>>>
>>
>>
>>
>> --
>> Paul H. Hargrove PHHargrove_at_[hidden]
>> Future Technologies Group
>> Computer and Data Sciences Department Tel: +1-510-495-2352
>> Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
>>
>>
>
>
> --
> Paul H. Hargrove PHHargrove_at_[hidden]
> Future Technologies Group
> Computer and Data Sciences Department Tel: +1-510-495-2352
> Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
>
> _______________________________________________
> devel mailing list
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> http://www.open-mpi.org/mailman/listinfo.cgi/devel
>
>
>
> _______________________________________________
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>
>
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>

-- 
Paul H. Hargrove                          PHHargrove_at_[hidden]
Future Technologies Group
Computer and Data Sciences Department     Tel: +1-510-495-2352
Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900