<div dir="ltr">Hi Pedro,<div><br></div><div>What if you just fix the number of blocks, and vary the cores?</div><div><br></div><div>-Paco</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Apr 5, 2023 at 5:13 AM pedro romero <<a href="mailto:pedro.romero@greentownsbyfusion.com">pedro.romero@greentownsbyfusion.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div class="msg3642951427471794836">
<div lang="ES" style="overflow-wrap: break-word;">
<div class="m_3642951427471794836WordSection1">
<p class="MsoNormal">Hi all,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span lang="EN-US">I am trying to scale up on computational resources and I came across a few issues. First of all, I am running the same +ug example (a modification of 2D Zpinch template) varying the number of cores, nxb and nyb but it
shows no speed up as the number of cores increase (I am tuning Iprocs, Jprocs, nxb and nyb to always get an approximately equal grid).
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Furthermore, at a certain number of cores the program execution interrupts, and I get a SIGBUS error (which I attach to this message). Am I missing something? Is there any additional thing to consider?<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">I will also attach the log file of one successful run using 36 cores and nxb=nyb=16 (which shows little or no speed up in comparison to a run on 12 cores and nxb=nyb=28). Thank you in advance for any help.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Pedro<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
</div>
</div>
_______________________________________________<br>
flash-users mailing list<br>
<a href="mailto:flash-users@flash.rochester.edu" target="_blank">flash-users@flash.rochester.edu</a><br>
<br>
For list info, including unsubscribe:<br>
<a href="https://flash.rochester.edu/mailman/listinfo/flash-users" rel="noreferrer" target="_blank">https://flash.rochester.edu/mailman/listinfo/flash-users</a><br>
</div></blockquote></div>