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<p><font face="Hack Nerd Font Mono">As far as I know, it is not a
linker problem but a driver problem.</font></p>
<p><font face="Hack Nerd Font Mono">It will eventually go away but
we are still working on other issues in this area.<br>
</font></p>
<p><font face="Hack Nerd Font Mono"></font><br>
</p>
<div class="moz-cite-prefix">On 5/18/20 7:43 PM, Itaru Kitayama via
Openmp-dev wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CANW9uysVNSJGG8uhnVDHdZksSqvuwgTSc7yiH8xbfGpBq35xJw@mail.gmail.com">
<pre class="moz-quote-pre" wrap="">Will ld or LLD be able to handle mixed objects
in future? That’s slightly un intuitive adding -fopenmp-targets=nvptx64 to
the C_FLAGS while there’s zero C files containing omp target pragmas.
On Tue, May 19, 2020 at 7:29 Alexey Bataev <a class="moz-txt-link-rfc2396E" href="mailto:a.bataev@outlook.com"><a.bataev@outlook.com></a> wrote:
</pre>
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">I think thereis a mix of "fat/not-fat" objects. But linker expects that
all objects are compiled as "fat" objects. Do you have a C code in this
project? DCMAKE_CXX_FLAGS affects only c++ compiler.
Best regards,
Alexey Bataev
</pre>
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">18 мая 2020 г., в 17:31, Itaru Kitayama <a class="moz-txt-link-rfc2396E" href="mailto:itaru.kitayama@gmail.com"><itaru.kitayama@gmail.com></a>
</pre>
</blockquote>
<pre class="moz-quote-pre" wrap="">написал(а):
</pre>
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">
Thank you, Alexey for building the app. In my environment, I stick to
CUDA Toolkt 10.1, as 8 seems
require older GCC releases, but higher than CentOS 7's default 4.8.
Anyway, in summary
by configuring NEST with yours, builds went well without an issue.
Both -O0 and -O3 works.
Below is mine
cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_COMPILER=clang
-DCMAKE_CXX_COMPILER=clang++ -DCMAKE_CXX_FLAGS="-fopenmp
-fopenmp-targets=nvptx64"
-DCMAKE_INSTALL_PREFIX=$HOME/opt/nest-clang-offloading
-Dwith-python=OFF ~/projects/nest-simulator
</pre>
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">On Tue, May 19, 2020 at 6:20 AM Alexey.Bataev <a class="moz-txt-link-rfc2396E" href="mailto:a.bataev@outlook.com"><a.bataev@outlook.com></a>
</pre>
</blockquote>
</blockquote>
<pre class="moz-quote-pre" wrap="">wrote:
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">
Tried to build without -O0, builds fine.
-------------
Best regards,
Alexey Bataev
18.05.2020 4:16 PM, Itaru Kitayama via Openmp-dev пишет:
Do you use CUDA Toolkit 8 or 10 release?
I’ll try your config in my dev environment.
</pre>
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">On Tue, May 19, 2020 at 5:12 Alexey.Bataev <a class="moz-txt-link-rfc2396E" href="mailto:a.bataev@outlook.com"><a.bataev@outlook.com></a>
</pre>
</blockquote>
</blockquote>
</blockquote>
<pre class="moz-quote-pre" wrap="">wrote:
</pre>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">
Hi, tried to rebuild it from the scratch, did not see any issue. My
</pre>
</blockquote>
</blockquote>
</blockquote>
<pre class="moz-quote-pre" wrap="">config:
</pre>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">
cmake -DCMAKE_INSTALL_PREFIX=~/test/NEST/install
</pre>
</blockquote>
</blockquote>
</blockquote>
<pre class="moz-quote-pre" wrap="">-Dwith-openmp="-fopenmp -fopenmp-targets=nvptx64-nvidia-cuda -O0"
-DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ ../nest-simulator
-DCMAKE_CXX_FLAGS="-I ~/build_llvm/projects/openmp/runtime/src -L
~/build_llvm/projects/openmp/libomptarget/" -DCMAKE_C_FLAGS="-I
/~/build_llvm/projects/openmp/runtime/src -L
~/build_llvm/projects/openmp/libomptarget/" -DCMAKE_BUILD_TYPE=Release
-Dwith-python=OFF
</pre>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">
-------------
Best regards,
Alexey Bataev
14.05.2020 6:42 AM, Itaru Kitayama via Openmp-dev пишет:
Hi,
During my app build I get an error (Clang is the latest from master
with CUDA Toolkit 10.1):
...
[ 3%] Linking CXX shared library libsli.so
cd /home/usr4/c74014k/builds/nest-clang-offloading/sli &&
/home/usr4/c74014k/cmake-3.17.1-Linux-x86_64/bin/cmake -E
cmake_link_script CMakeFiles/sli_lib.dir/link.txt --verbose=1
/home/usr4/c74014k/opt/clang/current/bin/clang++ -fPIC -fopenmp
-fopenmp-targets=nvptx64 -std=c++11 -O2 -Wall -fopenmp=libomp
-shared -Wl,-soname,libsli.so -o libsli.so
CMakeFiles/sli_lib.dir/allocator.cpp.o
CMakeFiles/sli_lib.dir/arraydatum.cc.o
CMakeFiles/sli_lib.dir/booldatum.cc.o
CMakeFiles/sli_lib.dir/charcode.cc.o CMakeFiles/sli_lib.dir/datum.cc.o
CMakeFiles/sli_lib.dir/dict.cc.o CMakeFiles/sli_lib.dir/dictdatum.cc.o
CMakeFiles/sli_lib.dir/dictstack.cc.o
CMakeFiles/sli_lib.dir/dictutils.cc.o
CMakeFiles/sli_lib.dir/doubledatum.cc.o
CMakeFiles/sli_lib.dir/fdstream.cc.o
CMakeFiles/sli_lib.dir/filesystem.cc.o
CMakeFiles/sli_lib.dir/functiondatum.cc.o
CMakeFiles/sli_lib.dir/get_mem.c.o
CMakeFiles/sli_lib.dir/integerdatum.cc.o
CMakeFiles/sli_lib.dir/interpret.cc.o
CMakeFiles/sli_lib.dir/iostreamdatum.cc.o
CMakeFiles/sli_lib.dir/literaldatum.cc.o
CMakeFiles/sli_lib.dir/name.cc.o CMakeFiles/sli_lib.dir/slinames.cpp.o
CMakeFiles/sli_lib.dir/namedatum.cc.o
CMakeFiles/sli_lib.dir/oosupport.cc.o
CMakeFiles/sli_lib.dir/parser.cc.o
CMakeFiles/sli_lib.dir/processes.cc.o
CMakeFiles/sli_lib.dir/scanner.cc.o CMakeFiles/sli_lib.dir/sli_io.cc.o
CMakeFiles/sli_lib.dir/sliactions.cc.o
CMakeFiles/sli_lib.dir/sliarray.cc.o
CMakeFiles/sli_lib.dir/slibuiltins.cc.o
CMakeFiles/sli_lib.dir/slicontrol.cc.o
CMakeFiles/sli_lib.dir/slidata.cc.o
CMakeFiles/sli_lib.dir/slidict.cc.o
CMakeFiles/sli_lib.dir/sliexceptions.cc.o
CMakeFiles/sli_lib.dir/sligraphics.cc.o
CMakeFiles/sli_lib.dir/slimath.cc.o
CMakeFiles/sli_lib.dir/slimodule.cc.o
CMakeFiles/sli_lib.dir/sliregexp.cc.o
CMakeFiles/sli_lib.dir/slistack.cc.o
CMakeFiles/sli_lib.dir/slistartup.cc.o
CMakeFiles/sli_lib.dir/slitype.cc.o
CMakeFiles/sli_lib.dir/slitypecheck.cc.o
CMakeFiles/sli_lib.dir/specialfunctionsmodule.cc.o
CMakeFiles/sli_lib.dir/stringdatum.cc.o
CMakeFiles/sli_lib.dir/symboldatum.cc.o
CMakeFiles/sli_lib.dir/tarrayobj.cc.o
CMakeFiles/sli_lib.dir/token.cc.o
CMakeFiles/sli_lib.dir/tokenarray.cc.o
CMakeFiles/sli_lib.dir/tokenstack.cc.o
CMakeFiles/sli_lib.dir/tokenutils.cc.o
CMakeFiles/sli_lib.dir/triedatum.cc.o
CMakeFiles/sli_lib.dir/typechk.cc.o CMakeFiles/sli_lib.dir/utils.cc.o
</pre>
</blockquote>
</blockquote>
</blockquote>
<pre class="moz-quote-pre" wrap="">-Wl,-rpath,/home/usr4/c74014k/builds/nest-clang-offloading/libnestutil::::::::::::::::::
</pre>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">../libnestutil/libnestutil.so /usr/lib64/libgsl.so
/usr/lib64/libgslcblas.so
nvlink fatal : Could not open input file '/tmp/get_mem-decc5d.cubin'
clang-11: error: nvlink command failed with exit code 1 (use -v to see
invocation)
make[2]: *** [sli/libsli.so] Error 1
make[2]: Leaving directory
</pre>
</blockquote>
</blockquote>
</blockquote>
<pre class="moz-quote-pre" wrap="">`/home/usr4/c74014k/builds/nest-clang-offloading'
</pre>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">make[1]: *** [sli/CMakeFiles/sli_lib.dir/all] Error 2
make[1]: Leaving directory
</pre>
</blockquote>
</blockquote>
</blockquote>
<pre class="moz-quote-pre" wrap="">`/home/usr4/c74014k/builds/nest-clang-offloading'
</pre>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">make: *** [all] Error 2
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</blockquote>
<pre class="moz-quote-pre" wrap="">
</pre>
</blockquote>
<pre class="moz-quote-pre" wrap="">
</pre>
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