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Hello Gregory,</div>
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Can you please let us know what configure line you are using, the version of OMB you are using, and if you have tried a make clean before rebuilding for nccl benchmarks if applicable?</div>
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Thanks,
<div>Matt</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Mvapich-discuss <mvapich-discuss-bounces@lists.osu.edu> on behalf of Bauer, Gregory H via Mvapich-discuss <mvapich-discuss@lists.osu.edu><br>
<b>Sent:</b> Monday, February 12, 2024 4:38 PM<br>
<b>To:</b> mvapich-discuss@lists.osu.edu <mvapich-discuss@lists.osu.edu><br>
<b>Subject:</b> [Mvapich-discuss] multiple definition errors building osu-micro-benchmarks with nccl enabled</font>
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Hello. I would like to use the OSU micro-benchmark for some latency comparison with MPI and NCCL. I am able to build the MPII versions without issue. I can also build the NCCL nccl-tests suite as well. There are some messages in the config. log
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<p class="x_MsoNormal">Hello.</p>
<p class="x_MsoNormal">I would like to use the OSU micro-benchmark for some latency comparison with MPI and NCCL. I am able to build the MPII versions without issue. I can also build the NCCL nccl-tests suite as well.
</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">There are some messages in the config.log with: <span class="x_s1">
/usr/bin/ld: Dwarf Error: Can't find .debug_ranges section</span></p>
<p class="x_MsoNormal">But it looks like configure was mostly happy with the nccl build we are using.
</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">Any suggestions here…</p>
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<p class="x_p1"><span class="x_s1">libtool: link: /sw/spack/deltas11-2023-03/apps/linux-rhel8-zen3/gcc-11.4.0/openmpi-4.1.6-lranp74/bin/mpicxx -g -O2 -Wl,-rpath=/sw/spack/deltas11-2023-03/apps/linux-rhel8-zen3/gcc-11.4.0/nccl-2.19.3-1-464jrf3/lib -Wl,-rpath=/sw/spack/deltas11-2023-03/apps/linux-rhel8-zen3/gcc-11.4.0/cuda-11.8.0-vfixfmc/lib
-o osu_xccl_allgather osu_xccl_allgather.o ../../../c/util/osu_util.o ../../../c/util/osu_util_mpi.o ../../../c/util/osu_util_papi.o ../../../c/xccl/util/osu_util_xccl_interface.o ../../../c/util/kernel.o ../../../c/xccl/util/nccl/osu_util_nccl_impl.o</span><span class="x_apple-converted-space">
</span><span class="x_s1">-L/sw/spack/deltas11-2023-03/apps/linux-rhel8-zen3/gcc-11.4.0/nccl-2.19.3-1-464jrf3/lib -L/sw/spack/deltas11-2023-03/apps/linux-rhel8-zen3/gcc-11.4.0/cuda-11.8.0-vfixfmc/lib -lcudart -lcuda -lnccl -lm</span></p>
<p class="x_p1"><span class="x_s1">../../../c/xccl/util/osu_util_xccl_interface.o:/u/gbauer/tests/mpi/nccl/osu-micro-benchmarks-7.3/c/xccl/collective/../../../c/xccl/util/osu_util_xccl_interface.h:115: multiple definition of `nccl_comm'</span></p>
<p class="x_p1"><span class="x_s1">/usr/bin/ld: Dwarf Error: Can't find .debug_ranges section.</span></p>
<p class="x_p1"><span class="x_s1">osu_xccl_allgather.o:(.bss+0x0): first defined here</span></p>
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