<div><div dir="auto">Alexey, I was saying that Initializing offloading rum time at runtime was failing with NEST.</div></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jan 7, 2020 at 1:47 Alexey Bataev <<a href="mailto:a.bataev@outlook.com">a.bataev@outlook.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<p>Hi Itaru, I tried to build the NEST with offloading support. It
is built successfully. How can I see that it does not work?<br>
</p>
<pre cols="72">-------------
Best regards,
Alexey Bataev</pre>
<div>05.01.2020 8:53 PM, Itaru Kitayama
пишет:<br>
</div></div><div>
<blockquote type="cite">
<div dir="ltr">Hi all,
<div>From discussions I had in the llvm-dev mailing list, I
realized thjat I really should not have used a Debug Clang at
all for my</div>
<div>app build. Although at this moment, trunk is broken for my
application of interest, I can go back to mid October of trunk
and</div>
<div>I can build my app with the Clang which is a Release build,
but also configured to print informative messages from
libomptarget.</div>
<div><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, Dec 23, 2019 at 12:47
PM Itaru Kitayama <<a href="mailto:itaru.kitayama@gmail.com" target="_blank">itaru.kitayama@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">I've collected Clang build performance data
with the -ftime-trace like below
<div><br>
</div>
<div>clang++ -ftime-trace -g -fopenmp
-fopenmp-targets=nvptx64 mini.cpp</div>
<div><br>
</div>
<div>. I'm uploading corresponding .json files for your
review as to why the latest Clang is slow. </div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sun, Dec 22, 2019 at
10:23 AM Alexey Bataev <<a href="mailto:a.bataev@hotmail.com" target="_blank">a.bataev@hotmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="auto">
Check-libomptarget and check-libomptarget-nvptx do.<br>
<br>
<div dir="ltr">Best regards,
<div>Alexey Bataev</div>
</div>
<div dir="ltr"><br>
<blockquote type="cite">21 дек. 2019 г., в 20:13,
Itaru Kitayama via Openmp-dev <<a href="mailto:openmp-dev@lists.llvm.org" target="_blank">openmp-dev@lists.llvm.org</a>>
написал(а):<br>
<br>
</blockquote>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">On x86 I see the same significant
slowdown when building an app with Debug Clang.
<div><br>
</div>
<div>Does make check-openmp exercise any part of
the offloading features?</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Dec 20,
2019 at 8:35 AM Doerfert, Johannes <<a href="mailto:jdoerfert@anl.gov" target="_blank">jdoerfert@anl.gov</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
On 12/19, Itaru Kitayama wrote:<br>
> On POWER8, my app builds 40 minutes with
the Debug Clang (40 times increase<br>
> of time, when<br>
> it is built with Release Clang), but on an
x86 host, it just takes about 10<br>
> minutes and it is bearable.<br>
> <br>
> Could this be PowerPC specific, is it why
most people aren't aware of the<br>
> slowness?<br>
<br>
That could most certainly be. Alexey should
build on Power regularly though.<br>
<br>
<br>
</blockquote>
</div>
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</blockquote>
</div>
</blockquote>
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</blockquote>
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</blockquote>
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