<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">To me it looks like the number of elements are to large to fit on just 32 ranks. Increase lpmin!</div><div dir="ltr"><br>On 7 Nov 2018, at 17:11, nek5000-users--- via Nek5000-users <<a href="mailto:nek5000-users@lists.mcs.anl.gov">nek5000-users@lists.mcs.anl.gov</a>> wrote:<br><br></div><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div>When you define your object in the common block, do you define it so that it stays the same size regardless of how many threads you use? Presumably, it should look something like this:<br></div><div>common /mydata/ data(lx1*ly1*lz1*lelt)</div><div><br></div><div>So that when you double the number of threads, you halve the value of lelt<br></div></div><br><div class="gmail_quote"><div dir="ltr">On Mon, Oct 8, 2018 at 8:25 PM <<a href="mailto:nek5000-users@lists.mcs.anl.gov">nek5000-users@lists.mcs.anl.gov</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal">Dear Nek users,</p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal" style="text-indent:.5in">Currently, I am working on a simulation with a decent size (11760 * 12 elements) employing ‘lpmin = 32’. When I compile, I received an error saying: “relocation overflows omitted from the output”. I googled this
error and it turned out this error comes from the ‘COMMON’ block; <span style="color:#53575e;background:#eeeeee">Static data, such as COMMON variables, and all of the code together is still limited to 2GB under any mcmodel. The suggested solution is to move
the data out of a COMMON block and into a module and make the data allocatable. <u></u>
<u></u></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span style="color:#53575e;background:#eeeeee">The most straightforward way to avoid this would be increase the ‘lpmin’ (for example if lpmin = 64, then it works), but this does not solve this issue, which is a
big constraint. I am wondering has anyone has run into this and got any experience in solving it?</span><u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thanks a lot in advance<u></u><u></u></p>
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