<div>Hello, we are trying to establish a parallel programming environment using mpich2. </div><div><br></div><div>[Specification of our environment]</div><div>OS: Windows 7 (64bit)</div><div>Two workstations: Intel CPU (64bit)</div>
<div>Programming environment: Visual studio 2008 (64bit)</div><div><br></div><div><br></div><div>We have two questions regarding mpich2 installation.</div><div><br></div><div>We have tried 64bit mpich2 (version 1.4.1p1, 1.3.2, 1.3, 1.2), but all of them give an error message ("MPICH2 not installed or unable to query the host") in the wmpiconfig program. </div>
<div>Also, when we click scan hosts in the wmpiconfig program, the items in the list of hosts are in gray which means error occurred.</div><div><br></div><div>However, we could successfully execute a parallel program with 64bit mpich2 (version 1.3.2) on the 64bit machine even though this version still shows the error message</div>
<div>Q1) So, we hope to know that we may simply ignore the error message.</div><div><br></div><div>On the other hands, we experienced that most of 32bit mpich2 versions (version 1.4.1p1, 1.3, 1.2) work in our environment without any error message.</div>
<div>Q2) Is it fine to use 32bit mpich2 on a 64bit machine? We hope to know if there is any disadvantage on this such as performance degradation.</div><div><br></div><div>Thank you.</div><div><br></div><div><br></div><div>
Best regards,</div><div>Seokho Son.</div>