<p dir="ltr">Hi,</p>
<p dir="ltr">Unsure offhand, but there's a fix in gerrit in this area if you want to try that?</p>
<p dir="ltr">Mark</p>
<br><div class="gmail_quote"><div dir="ltr">On Mon, 25 Apr 2016 19:05 Vedran Miletić <<a href="mailto:rivanvx@gmail.com">rivanvx@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">Hi,<br><div><br>since fa1360610d6fcf7eb263ce1181d9954074fd5151 "Make thread affinity failures always end up in log", I get crashes in mdrun when using tMPI on any simulation I tried (does not affect OpenMPI). I am seeing this on two machines using Fedora 23 and 24, GCC 5.3 and 6, respectively.<br><br>Backtrace is <br><br>#0 0x00007ffff78c966f in tMPI_Thread_getspecific (key=...) at /home/miletivn/workspace/gromacs/src/external/thread_mpi/src/pthreads.c:571<br>#1 0x00007ffff78cff34 in tMPI_Reduce (sendbuf=0x7fffffffa4dc, recvbuf=0x7fffffffa4d8, count=1, datatype=0x7ffff7dd6660 <tmpi_int>, op=TMPI_LAND, root=0, comm=0x0) at /home/miletivn/workspace/gromacs/src/external/thread_mpi/src/reduce.c:247<br>#2 0x00007ffff63038a5 in invalidWithinSimulation (cr=0x681bd0, invalidLocally=false) at /home/miletivn/workspace/gromacs/src/gromacs/mdrunutility/threadaffinity.cpp:73<br>#3 0x00007ffff6303c0b in get_thread_affinity_layout (fplog=0x689410, cr=0x681bd0, hwinfo=0x680230, threads=8, pin_offset=0, pin_stride=0x7fffffffc634, localityOrder=0x7fffffffc638) at /home/miletivn/workspace/gromacs/src/gromacs/mdrunutility/threadaffinity.cpp:142<br>...<br><br></div><div>Variable key looks like<br><br>$1 = {initialized = {value = 0, padding = '\000' <repeats 59 times>}, key = 0x0}<br><br></div><div>So key is uninitialized. Any idea why?<br></div><div><br></div><div>Regards,<br></div><div>Vedran<br></div></div>
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