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<p class="MsoNormal"><span style="color:windowtext">Hi Shane,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Thanks for the quick reply. I will probably just enclose the sequential code using MPI_INIT() and MPI_FINALIZE() and execute it using mpirun -n 1 ./app.exe. Do you think that will work?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Wadud.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="color:windowtext;mso-fareast-language:EN-GB">From:</span></b><span lang="EN-US" style="color:windowtext;mso-fareast-language:EN-GB"> Shane Snyder [mailto:ssnyder@mcs.anl.gov]
<br>
<b>Sent:</b> 14 December 2016 15:57<br>
<b>To:</b> Wadud Miah <wadud.miah@nag.co.uk>; darshan-users@lists.mcs.anl.gov<br>
<b>Subject:</b> Re: [Darshan-users] Darshan I/O profiling of sequential code<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Hi Wadud,<br>
<br>
Right now, Darshan can only instrument MPI applications. It intercepts MPI_Init and MPI_Finalize to initialize itself and to produce the output log file, respectively. It also uses MPI communication and I/O operations at shutdown time to aggregate data across
all processes and write to the log file. Breaking the MPI dependencies isn't exactly straightforward, but we have at least been thinking about how to extend Darshan to non-MPI codes. Recent changes to the architecture have been a step in the right direction
but there's still work to do to get us all the way there.<br>
<br>
We will continue to think about this and will certainly keep the mailing list updated with any progress we make.<br>
<br>
Thanks,<br>
--Shane<span style="font-size:12.0pt;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal">On 12/14/2016 09:35 AM, Wadud Miah wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I have built Darshan using Intel MPI (2017) and would like to profile a sequential code using Darshan. I have used the same Darshan library to profile an MPI code it works fine. I execute the following command line for a sequential code
:<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">$ export DARSHAN_LOGPATH=.<o:p></o:p></p>
<p class="MsoNormal">$ LD_PRELOAD=/home/pr1ebt00/pr1ebt05/darshan-3.1.2-impi/lib/libdarshan.so ~/gbmoldd/utilities/joinfiles.exe<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">but it doesn’t create any Darshan output file. Do you know if I can profile sequential codes using Darshan? If so, how can I do this?
<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Best regards,<o:p></o:p></p>
<p class="MsoNormal">Wadud.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">-----------------------------------</span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Dr. Wadud Miah</span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Computational Scientist</span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Numerical Algorithms Group</span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">01865 518035</span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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<pre>_______________________________________________<o:p></o:p></pre>
<pre>Darshan-users mailing list<o:p></o:p></pre>
<pre><a href="mailto:Darshan-users@lists.mcs.anl.gov">Darshan-users@lists.mcs.anl.gov</a><o:p></o:p></pre>
<pre><a href="https://lists.mcs.anl.gov/mailman/listinfo/darshan-users">https://lists.mcs.anl.gov/mailman/listinfo/darshan-users</a><o:p></o:p></pre>
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