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Dear Stefano,</div>
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Thanks for your response. I have re-run the command as per your suggestion below,</div>
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and I get the full output as attached to this email ( the output was quite long so I thought it</div>
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better to attach it). However, I am wondering whether the following lines of this output,</div>
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which occur just when the program fails, may be something to do with the problem ?<br>
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Many thanks,</div>
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Dan.<br>
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.</div>
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.</div>
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check 01: 10 0 9
<div> check 02: 10 0 9</div>
<div> 4 4 4</div>
<div> 4 4 4</div>
<div> 4 4 4</div>
<div> 4</div>
<div> now for PetscIntView ...</div>
<div>0: 4 4 4 4 4 4 4 4 4 4</div>
<div>==841883== Invalid write of size 4</div>
<div>==841883== at 0x503E784: petscintview_ (/data/work/slepc/PETSC/petsc-3.14.5/src/sys/error/ftn-custom/zerrf.c:109)</div>
<div>==841883== by 0x40262C: all_stab_routines_mp_write_rows_to_petsc_matrix_ (/data/work/rotplane/omega_to_zero/stability/test/tmp10/tmp3/tryme.F:17)</div>
<div>==841883== by 0x402465: MAIN__ (/data/work/rotplane/omega_to_zero/stability/test/tmp10/tmp3/tryme.F:40)</div>
<div>==841883== by 0x402221: main (in /data/work/rotplane/omega_to_zero/stability/test/tmp10/tmp3/trashy.exe)</div>
<div>==841883== Address 0x0 is not stack'd, malloc'd or (recently) free'd</div>
==841883== <br>
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[0]PETSC ERROR: ------------------------------------------------------------------------[0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, probably memory access out of range<br>
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.</div>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Stefano Zampini <stefano.zampini@gmail.com><br>
<b>Sent:</b> Friday, April 9, 2021 9:17 AM<br>
<b>To:</b> dazza simplythebest <sayosale@hotmail.com><br>
<b>Cc:</b> petsc-users@mcs.anl.gov <petsc-users@mcs.anl.gov><br>
<b>Subject:</b> Re: [petsc-users] Newbie question: Strange failure when calling PetscIntView from slepc application</font>
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<div class="" style="word-wrap:break-word; line-break:after-white-space">This way you are running mpiexec.hydra under valgrind. You want to run instead
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<div class=""><span class="" style="font-family:Calibri,Helvetica,sans-serif; font-size:16px">mpiexec.hydra -n 1 </span><font class="" size="3" face="Calibri, Helvetica, sans-serif">valgrind --track-origins=yes --leak-check=full --fullpath-after= ./trashy.exe</font><br class="">
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<div class="">On Apr 9, 2021, at 12:11 PM, dazza simplythebest <<a href="mailto:sayosale@hotmail.com" class="">sayosale@hotmail.com</a>> wrote:</div>
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<div class=""><span class="" style="font-family:Calibri,Helvetica,sans-serif; font-size:16px; font-style:normal; font-variant-caps:normal; font-weight:normal; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">valgrind
--track-origins=yes --leak-check=full mpiexec.hydra -n 1 ./trashy.exe</span></div>
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