<div dir="auto">Hello, <div dir="auto">can you open an issue on <a href="http://redmine.gromacs.org">redmine.gromacs.org</a> for this, with an input that causes the crash and the command line?</div><div dir="auto"><br></div><div dir="auto">Thanks</div><div dir="auto">Paul</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 27 May 2019, 18:43 Peicho Petkov, <<a href="mailto:peicho.petkov@gmail.com">peicho.petkov@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><div><div>Dear Gromacs developers,</div><div><br></div><div>I received segmentation violation when running a simulation with gromacs 2019.2 and option -ddorder pp_pme.</div><div>For debugging purposes I used 2 mpi ranks simulation with </div><div>-ddorder pp_pme -npme 1</div><div>and the SIGSEG apeared at </div><div>domdec.cpp: 892 -> while (sim_nodeid > dd->comm->pmenodes[i])</div><div>looking at the source some lines above I found the condition if(dd->comm->pmenodes==nullptr) and</div><div>it turned out that the pointer dd->comm->pmenodes is not initialized yet (in the pp_pme case).</div><div>It was fixed after adding </div><div> comm->pmenodes = nullptr; </div><div>in function static gmx_domdec_comm_t *init_dd_comm() </div><div><br></div><div>Are the considerations above correct or not?</div><div><br></div><div>Best regards,</div><div>Peicho.</div></div></div><div><br></div></div></div></div></div></div></div>
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