Hi Mehmet,<br><br>We've seen nek hang on machines when the number of procs was increased, as you've just encountered. Sometimes, if you change the parameters in SIZE to give you some extra buffer in memory, you can get past that sticking point. So, say you need lelt >= 100. Then, if you have enough memory left on the proc, compile for lelt=150 (or whatever you can manage). This doesn't always work, but it's a quick thing to try.<br>
<br>Best,<br>Justin<br><br><div class="gmail_quote">On Mon, Sep 24, 2012 at 5:30 PM, <span dir="ltr"><<a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank">nek5000-users@lists.mcs.anl.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<br>
Hi Justin,<br>
<br>
Thanks for your quick email.<br>
<br>
I killed the simulation after half an hour later, because it was
still on the same line.<br>
I don't think my setup is that big. So I am not sure if I should
wait more or not.<br>
<br>
Best,<br>
Mehmet<div class="im"><br>
<br>
<br>
<blockquote type="cite"> >
<pre style="line-height:normal;text-indent:0px;letter-spacing:normal;text-align:start;font-variant:normal;text-transform:none;font-style:normal;white-space:pre-wrap;font-weight:normal;word-spacing:0px">Hi Mehmet,
How long is nek at the gs_setup line? It can take several minutes for large
cases.
The last error you're having is because you've run out of memory. Remember
that the memory footprint on each processor scales as lx1^3 * lelt. With
certain compilers you can add the following option in makenek:
G="-mcmodel=medium"
This allows you compile larger arrays, and generally use more memory.
Best,
Justin</pre>
</blockquote>
<br>
</div></div>
<br>_______________________________________________<br>
Nek5000-users mailing list<br>
<a href="mailto:Nek5000-users@lists.mcs.anl.gov">Nek5000-users@lists.mcs.anl.gov</a><br>
<a href="https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users" target="_blank">https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users</a><br>
<br></blockquote></div><br>