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<p class="MsoNormal">Hi Doru and all,<o:p></o:p></p>
<p class="MsoNormal">I now have an install of clang + OpenMP target-offload using the old toolchain.<o:p></o:p></p>
<p class="MsoNormal">The benchmarks build, but when trying to run I get the following error:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">pfe25.gjost 89> more sp.A.out.txt<o:p></o:p></p>
<p class="MsoNormal">libomptarget fatal error 1: failure of target construct while offloading is mand<o:p></o:p></p>
<p class="MsoNormal">atory<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am using a Skylake node with 4 V100 GPUs, using only one of the GPUs. Would you have suggestions on how I can narrow down this issue? Should I rebuild libomp in debug mode?<o:p></o:p></p>
<p class="MsoNormal">Thanks in advance and best regards,<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Gabriele Jost<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:-webkit-standard;color:black">Gabriele Jost NASA Ames Research Center<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:-webkit-standard;color:black">Email: Gabriele.Jost@nasa.gov Mail Stop 258-6<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:-webkit-standard;color:black">Work Phone: (650) 604-0468 Bldg. 258, Rm. 232-4<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:-webkit-standard;color:black">Scientific & HPC Application P.O. Box 1<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:-webkit-standard;color:black">Development/Optimization Moffett Field, CA 94035-0001<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">"Jost, Gabriele (ARC-TNC)[Supersmith]" <gabriele.jost@nasa.gov><br>
<b>Date: </b>Wednesday, November 27, 2019 at 1:08 PM<br>
<b>To: </b>Gheorghe-Teod Bercea <Gheorghe-Teod.Bercea@ibm.com><br>
<b>Cc: </b>"openmp-dev@lists.llvm.org" <openmp-dev@lists.llvm.org><br>
<b>Subject: </b>Re: [EXTERNAL] Re: [Openmp-dev] clang 9.0.0 + libstdc++ problem<o:p></o:p></span></p>
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<p class="MsoNormal">Thanks, Doru.<o:p></o:p></p>
<p class="MsoNormal">I have for now installed as below. I will try what you suggested next week!<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Gabriele Jost</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:-webkit-standard;color:black">Gabriele Jost NASA Ames Research Center</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:-webkit-standard;color:black">Email: Gabriele.Jost@nasa.gov Mail Stop 258-6</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:-webkit-standard;color:black">Work Phone: (650) 604-0468 Bldg. 258, Rm. 232-4</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:-webkit-standard;color:black">Scientific & HPC Application P.O. Box 1</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:-webkit-standard;color:black">Development/Optimization Moffett Field, CA 94035-0001</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:-webkit-standard;color:black">************************************************************************</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Gheorghe-Teod Bercea <Gheorghe-Teod.Bercea@ibm.com><br>
<b>Date: </b>Wednesday, November 27, 2019 at 12:59 PM<br>
<b>To: </b>"Jost, Gabriele (ARC-TNC)[Supersmith]" <gabriele.jost@nasa.gov><br>
<b>Cc: </b>"openmp-dev@lists.llvm.org" <openmp-dev@lists.llvm.org><br>
<b>Subject: </b>[EXTERNAL] Re: [Openmp-dev] clang 9.0.0 + libstdc++ problem</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Hi Gabriele,</span><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">You can set the -DGCC_INSTALL_PREFIX to point to the folder with the desired version of GCC.</span><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">The GCC folder you want to point to is the one containing the lib and include folders. I use GCC 6.4.</span><br>
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<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Thanks a lot,</span><br>
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<span style="font-size:10.0pt;font-family:"Arial",sans-serif">--Doru</span><br>
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<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">From: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">"Jost, Gabriele \(ARC-TNC\)\[Supersmith\] via Openmp-dev" <openmp-dev@lists.llvm.org></span><br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">To: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">"openmp-dev@lists.llvm.org" <openmp-dev@lists.llvm.org></span><br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">Date: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">11/27/2019 03:17 PM</span><br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">Subject: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">[EXTERNAL] [Openmp-dev] clang 9.0.0 + libstdc++ problem</span><br>
<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#5F5F5F">Sent by: </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">"Openmp-dev" <openmp-dev-bounces@lists.llvm.org></span><o:p></o:p></p>
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<p style="margin:0in;margin-bottom:.0001pt">Hello llvm developers!<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">I am trying to build the OpenMP runtime with clang 9.0.0. The clang compiler fails to find the libstdc++ library.<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">I specified the pathname, but it does not help.<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">I had to resort to configuring like this:<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">cmake -DCMAKE_BUILD_TYPE=Release \<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">-DCMAKE_INSTALL_PREFIX="/nobackupnfs2/clang-install"\<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">-DCMAKE_C_COMPILER=/nobackupnfs2/clang-install/bin/clang\<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">-DCMAKE_CXX_COMPILER=/nobackupnfs2/clang-install/bin/clang++\<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">-DLIBOMPTARGET_DEP_LIBELF_LIBRARIES:FILEPATH=/usr/lib64/libelf.so.1 \<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">-DLLVM_LIBSTDCXX:FILEPATH=/usr/lib64/libstdc++.so.6\<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">-DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON\<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">-DCLANG_OPENMP_NVPTX_DEFAULT_ARCH=sm_60 \<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">-DLIBOMPTARGET_NVPTX_COMPUTE_CAPABILITIES=35,60,70 ../llvm-9.0.0.src<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"> <o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">Is there a way to tell clang to use the correct library? It complains that the library is too old, but I think it is because it does not find the right one.<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"> <o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">Gabriele Jost<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"> <o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">************************************************************************<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">Gabriele Jost NASA Ames Research Center<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">Email: Gabriele.Jost@nasa.gov Mail Stop 258-6<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">Work Phone: (650) 604-0468 Bldg. 258, Rm. 232-4<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">Scientific & HPC Application P.O. Box 1<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">Development/Optimization Moffett Field, CA 94035-0001<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt">************************************************************************<tt><span style="font-size:10.0pt">_______________________________________________</span></tt><span style="font-size:10.0pt;font-family:"Courier New""><br>
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