<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="font-size: 16px; ">Hello,</div><div style="font-size: 16px; "><br></div><div style="font-size: 16px; ">Using, mpich2 1.4.1p1, running the smallest code (MPI_Init(NULL, NULL) )</div><div style="font-size: 16px; ">I got Segmentation fault (signal 11), with high numbers of tasks</div><div style="font-size: 16px; "><br></div><div><font class="Apple-style-span" size="4"><span class="Apple-style-span" style="font-size: 16px;">Someone ran into the same failure ?</span></font></div><div><font class="Apple-style-span" size="4"><span class="Apple-style-span" style="font-size: 16px;">Best regards</span></font></div><div><font class="Apple-style-span" size="4"><span class="Apple-style-span" style="font-size: 16px;"><br></span></font></div><div style="font-size: 16px; "><br></div><div style="font-size: 16px; ">context : </div><div style="font-size: 16px; "> mpich2 1.4.1 p1, compiled with gcc (4.1.2)</div><div style="font-size: 16px; "> Linux SL5 (kernel 2.6.18-238.12cc.el5)</div><div style="font-size: 16px; "><br></div><div style="font-size: 16px; ">code :</div><div style="font-size: 14px; "><i> if (MPI_Init(NULL, NULL) != MPI_SUCCESS ) {</i></div><div style="font-size: 14px; "><i> printf("Error calling MPI_Init !!, => exiting \n") ; fflush(stdout);</i></div><div style="font-size: 14px; "><i> return(1);</i></div><div style="font-size: 14px; "><i> }</i></div><div style="font-size: 16px; "><br></div><div style="font-size: 16px; ">run : </div><div style="font-size: 16px; "><i> mpiexec -verbose -np 255 bin/mpiInit_test >& </i><i>mpiInit_test.log</i></div><div style="font-size: 16px; "><br></div><div style="font-size: 16px; ">result :</div><div style="font-size: 16px; "><div><i> APPLICATION TERMINATED WITH THE EXIT STRING: Segmentation fault (signal 11)</i></div></div><div style="font-size: 16px; "><br></div><div style="font-size: 16px; "><br></div><div style="font-size: 16px; "><i>mpiInit_test.log file :</i></div><div style="font-size: 16px; "><i><br></i></div><div style="font-size: 16px; "></div></body></html>