Dear All,<br><br> I am performing a series tests on a RHEL-intel 4-core 2cpu workstation with ifort 9 and mpi-1.2.6.<br><br>A strange behavior is found for QE v4 when i carry out parallel executation. For example, i just ran the script supplied in $QE/example/example10. Using 'top' command, i found load in each cpu is highly unbalanced :<br>
%cpu %mem<br> 151 0.2 0:20.38 pw.x <br> 130 0.2 0:19.40 pw.x <br> 103 0.2 0:19.99 pw.x <br> 92 0.2 0:13.82 pw.x <br> 81 0.2 0:17.89 pw.x <br>
79 0.2 0:14.01 pw.x <br> 76 0.2 0:14.01 pw.x <br> 74 0.2 0:14.02 pw.x <br> <br>But this situation doesnot happen when i try to run the same work with QE-v3.<br>Would you please give me some hints or suggestion to tune the performance for<br>
QE v4 ?<br>Thanks in advance, and best regards!<br><br>Hai-Ping<br clear="all"><br>-- <br>Hai-Ping Lan <br>Department of Electronics ,<br>Peking University , Bejing, 100871<br><a href="mailto:lanhaiping@gmail.com">lanhaiping@gmail.com</a>, <a href="mailto:hplan@pku.edu.cn">hplan@pku.edu.cn</a><br>