<div dir="ltr">Hi Albert,<div><br></div><div>Could you please post EPW-related issues in the EPW forum (<a href="https://forum.epw-code.org/">https://forum.epw-code.org/</a>) so that the EPW experts can answer your issue?</div><div><br></div><div>Best,</div><div>Hari Paudyal</div><div>Binghamton University-SUNY</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Aug 3, 2022 at 9:25 AM Collins Nganou <<a href="mailto:Collins_Nganou@cbu.ca">Collins_Nganou@cbu.ca</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">
Dear QE community,
<div>I am struggling with the EPW MPI failure. </div>
<div>I have installed QE 7.1 with the following configuration:</div>
<div>./configure CC=pgcc F77=pgf77 FC=nvfortran F90=nvfortran --with-cuda="/usr/share/nvidia/hpc_sdk/Linux_x86_64/22</div>
<div>.3/cuda/11.6" --with-cuda-runtime=11.6 --enable-openmp --with-scalapack=no --with-cuda-cc=70</div>
<div>The configuration proceeds without error and follows by make all.</div>
<div>I generated all the executables except epw.x. I proceed with make epw to generate epw.x.</div>
<div>However, epw.x gives an error on the mpi failure that does not exist with other executables such as pw.x. </div>
<div>Here is the obtained error:</div>
<div>An error occurred in MPI_Init_thread </div>
<div>*** on a NULL communicator </div>
<div>*** MPI_ERRORS_ARE_FATAL (processes in this communicator will now abort, </div>
<div>*** and potentially your MPI job) </div>
<div>[c109067:189163] Local abort before MPI_INIT completed completed successfully, but am not able to aggregate error messages, and not able to guara</div>
<div>ntee that all other processes were killed! </div>
<div>[c109067:189160] [[INVALID],INVALID] ORTE_ERROR_LOG: A system-required executable either could not be found or was not executable by this user in</div>
<div> file ../../../../../orte/mca/ess/singleton/ess_singleton_module.c at line 388
</div>
<div>[c109067:189160] [[INVALID],INVALID] ORTE_ERROR_LOG: A system-required executable either could not be found or was not executable by this user in</div>
<div> file ../../../../../orte/mca/ess/singleton/ess_singleton_module.c at line 166</div>
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Regards</div>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
Albert<br>
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