Hi,<br><br> I have a strange problem. In one case, I installed mpich2 using gcc and gfortran compilers and I get a CPU usage of 100% when I run parallel codes. In the second case, I installed mpich2 with Intel icc and ifort compilers (64bit, ver-11.1) and I get a cpu usage of 85%. Could it be because of the configuration options used for the mpich2 installation? Do the codes always have to show a 100% cpu usage?<br>
<br>Thanks and regards<br>Suman Vajjala <br>