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<p>Matt,</p>
<p>I cut all the unnecessary packages and still have the same issue.</p>
<p>I also checked 'size mitgcmuv' and compared the size to other
runs which work - it asks for about half the size of other runs
which work fine (same machine, same queue, same compiling options,
etc).</p>
<p>The tiles are already down to 32x32 grid points, and I'm happily
running configurations with a tile size almost twice as big and
the same amount of vertical layers.</p>
<p>I will try some different tile sizes but I think the problem must
be somewhere else..</p>
<p>Andreas<br>
</p>
<p><br>
</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 18/05/18 00:35, Matthew Mazloff
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:83E5C755-65B9-4486-95DE-463073267C4A@ucsd.edu">
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charset=windows-1252">
Sounds like a memory issue. I think your executable has become too
big for you machine. You will need to reduce tile size or do
something else (e.g. reduce number of diagnostics or cut a
package)
<div class=""><br class="">
</div>
<div class="">and check</div>
<div class="">
<div style="margin: 0px; font-stretch: normal; font-size: 16px;
line-height: normal; font-family: Menlo; background-color:
rgb(254, 244, 156);" class=""><span
style="font-variant-ligatures: no-common-ligatures" class="">size
mitgcmuv </span></div>
</div>
<div class="">to get a ballpark idea of how much memory you are
requesting</div>
<div class=""><br class="">
</div>
<div class="">Matt</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
<div><br class="">
<blockquote type="cite" class="">
<div class="">On May 16, 2018, at 11:27 PM, Andreas Klocker
<<a href="mailto:andreas.klocker@utas.edu.au" class=""
moz-do-not-send="true">andreas.klocker@utas.edu.au</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="">Hi guys,<br class="">
<br class="">
I've taken a working 1/24 degree nested simulation (of
Drake Passage)<br class="">
with 42 vertical layers and tried to increase the
vertical layers to 150<br class="">
(without changing anything else apart from obviously my
boundary files<br class="">
for OBCS and recompiling with 150 vertical layers).
Suddenly I get the<br class="">
following error message:<br class="">
<br class="">
forrtl: severe (174): SIGSEGV, segmentation fault
occurred<br class="">
Image PC Routine Line
Source<br class="">
<a moz-do-not-send="true" href="http://libirc.so">libirc.so</a>
00002BA1704BC2C9 Unknown Unknown Unknown<br
class="">
<a moz-do-not-send="true" href="http://libirc.so">libirc.so</a>
00002BA1704BAB9E Unknown Unknown Unknown<br
class="">
libifcore.so.5 00002BA1722B5F3F Unknown Unknown
Unknown<br class="">
libifcore.so.5 00002BA17221DD7F Unknown Unknown
Unknown<br class="">
libifcore.so.5 00002BA17222EF43 Unknown Unknown
Unknown<br class="">
libpthread.so.0 00002BA1733B27E0 Unknown Unknown
Unknown<br class="">
mitgcmuv_drake24_ 00000000004E61BC mom_calc_visc_ 3345
mom_calc_visc.f<br class="">
mitgcmuv_drake24_ 0000000000415127 mom_vecinv_ 3453
mom_vecinv.f<br class="">
mitgcmuv_drake24_ 0000000000601C33 dynamics_ 3426
dynamics.f<br class="">
mitgcmuv_drake24_ 0000000000613C2B forward_step_ 2229
forward_step.f<br class="">
mitgcmuv_drake24_ 000000000064581E main_do_loop_ 1886
main_do_loop.f<br class="">
mitgcmuv_drake24_ 000000000065E500 the_main_loop_ 1904
the_main_loop.f<br class="">
mitgcmuv_drake24_ 000000000065E6AE the_model_main_
2394 the_model_main.f<br class="">
mitgcmuv_drake24_ 00000000005C6439 MAIN__ 3870 main.f<br
class="">
mitgcmuv_drake24_ 0000000000406776 Unknown Unknown
Unknown<br class="">
libc.so.6 00002BA1737E2D1D Unknown Unknown
Unknown<br class="">
mitgcmuv_drake24_ 0000000000406669 Unknown Unknown
Unknown<br class="">
<br class="">
First this error pointed to a line in mom_calc_visc.f on
which<br class="">
calculations regarding the Leith viscosity are done. As
a test I then<br class="">
used a Smagorinsky viscosity instead and now it crashes
with the same<br class="">
error, but pointing to a line where Smagorinsky
calculations are done. I<br class="">
assume I must be chasing a way more fundamental problem
than one related<br class="">
to these two viscosity choices...but I'm not sure what
this might be....<br class="">
<br class="">
Has anyone got any idea of what could be going wrong
here?<br class="">
<br class="">
Thanks in advance!<br class="">
<br class="">
Andreas<br class="">
<br class="">
<br class="">
<br class="">
University of Tasmania Electronic Communications Policy
(December, 2014).<br class="">
This email is confidential, and is for the intended
recipient only. Access, disclosure, copying,
distribution, or reliance on any of it by anyone outside
the intended recipient organisation is prohibited and
may be a criminal offence. Please delete if obtained in
error and email confirmation to the sender. The views
expressed in this email are not necessarily the views of
the University of Tasmania, unless clearly intended
otherwise.<br class="">
<br class="">
_______________________________________________<br
class="">
MITgcm-support mailing list<br class="">
<a href="mailto:MITgcm-support@mitgcm.org" class=""
moz-do-not-send="true">MITgcm-support@mitgcm.org</a><br
class="">
<a moz-do-not-send="true" href="http://mailman.mitgcm.org/mailman/listinfo/mitgcm-support">http://mailman.mitgcm.org/mailman/listinfo/mitgcm-support</a><br
class="">
</div>
</div>
</blockquote>
</div>
<br class="">
</div>
<br>
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<pre wrap="">_______________________________________________
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
===============================================================
Dr. Andreas Klocker
Physical Oceanographer
ARC Centre of Excellence for Climate System Science
&
Institute for Marine and Antarctic Studies
University of Tasmania
20 Castray Esplanade
Battery Point, TAS
7004 Australia
M: +61 437 870 182
W: <a class="moz-txt-link-freetext" href="http://www.utas.edu.au/profiles/staff/imas/andreas-klocker">http://www.utas.edu.au/profiles/staff/imas/andreas-klocker</a>
skype: andiklocker
===============================================================</pre>
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