Dear Mr. Chan,<br><br> I will try it according to your instruction. Thank you very much.<br><br><div class="gmail_quote">On Tue, Sep 21, 2010 at 4:37 PM, Anthony Chan <span dir="ltr"><<a href="mailto:chan@mcs.anl.gov">chan@mcs.anl.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><br>
It appears your fortran code has an illegal access of memory.<br>
Since you are using intel fortran compiler and assuming you have access<br>
to the source code, recompile the code with -traceback (and probably -g)<br>
which will display a backtrace of where segfault occurs.<br>
<br>
A.Chan<br>
<div><div></div><div class="h5"><br>
----- "sc Deng" <<a href="http://dengsc74.sj" target="_blank">dengsc74.sj</a>@<a href="http://gmail.com" target="_blank">gmail.com</a>> wrote:<br>
<br>
> Dear all,<br>
><br>
> I meet a question in using MPICH2, the error is as follows,<br>
><br>
><br>
> TimeStep = 3500 Time = 0.1050E+04<br>
> Total E = 85.3849 Pot E = 81.9326 Kin E = 3.45222<br>
> Temp = 0.702334E-04 Pressure =-0.789195E-04 Volume = 191110.<br>
> Box = 57.7138 57.4711 57.6176<br>
> forrtl: severe (174): SIGSEGV, segmentation fault occurred<br>
> Image PC Routine Line<br>
> Source<br>
> DEM_Linux.out 000000000046FAE6 Unknown Unknown<br>
> Unknown<br>
><br>
> Stack trace terminated abnormally.<br>
> rank 1 in job 5 fn-148-148_54121 caused collective abort of all<br>
> ranks<br>
> exit status of rank 1: killed by signal 9<br>
><br>
><br>
> It is a 3D Distinct element code, the error appears after computing<br>
> 3500<br>
> time steps, but it is OK for 2D simulation or just 1 processor for<br>
> 3D.<br>
> Please let me know if anyone has the corresponding experience. Thank<br>
> you<br>
> very much.<br>
><br>
> --<br>
> Your sincerely,<br>
> Shouchun Deng<br>
><br>
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</blockquote></div><br><br clear="all"><br>-- <br>Your sincerely,<br>Shouchun Deng<br><br>