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<p class="MsoNormal"><span style="font-size:11.0pt">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I have installed clang12 with OpenMP target-offload on a cluster of v100 nodes using cuda 10.1 and gcc 8.2.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">When I try to test it:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">clang -c -I../common -O3 -g -fopenmp -fopenmp-targets=nvptx64-nvida-cuda -Xopenmp-target=nvptx64-nvidia-cuda -march=sm_70 -mcmodel=medium -DCRPL_COMP=0 ft.c<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">clang-12: error: cannot find libdevice for sm_<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">with a blank architecture.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I have the openmp target bc libraries<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">lrwxrwxrwx 1 gjost scicon 19 Aug 21 14:39 libRemarks.so -> libRemarks.so.12git<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">-rw-r--r-- 1 gjost scicon 69656 Aug 21 14:52 libomptarget-nvptx-sm_35.bc<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">-rw-r--r-- 1 gjost scicon 69196 Aug 21 14:52 libomptarget-nvptx-sm_70.bc<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">-rw-r--r-- 1 gjost scicon 69608 Aug 21 14:52 libomptarget-nvptx-sm_60.bc<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">lrwxrwxrwx 1 gjost scicon 9 Aug 21 15:07 libgomp.so -> libomp.so<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">lrwxrwxrwx 1 gjost scicon 9 Aug 21 15:07 libiomp5.so -> libomp.so<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The only place in the llvm code where I see a message like this is here:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">grep "cannot find libdevice for sm_"
<b>llvm-project/clang/test/Driver/cuda-detect.cu<o:p></o:p></b></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">// MISSINGLIBDEVICE: error: cannot find libdevice for sm_20.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">pfe25.gjost 69> grep MISSINGLIBDEVICE llvm-project/clang/test/Driver/cuda-detect.cu<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">// RUN: | FileCheck %s -check-prefix COMMON -check-prefix MISSINGLIBDEVICE<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">// RUN: | FileCheck %s -check-prefix COMMON -check-prefix MISSINGLIBDEVICE<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">// MISSINGLIBDEVICE: error: cannot find libdevice for sm_20.<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>
<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Have you seen this behavior before? Maybe clang12/cuda/10.1 and gcc8.2 is a bad combo?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Thanks in advance and greetings,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
<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",serif;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",serif;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",serif;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",serif;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",serif;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",serif;color:black">Development/Optimization Moffett Field, CA 94035-0001<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"-webkit-standard",serif;color:black">************************************************************************</span><o:p></o:p></p>
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