<html><P>> The two machines are not connected. They are stand-alone, set up that <BR>> way to work on this issue. Both have Fedora 10. One used the build <BR>> instructions in the MPICH2 installer guide. The other used the rpm. Both <BR>> yield the same issue, invalid instruction when MPI_Init tries to <BR>> execute. Something is wrong with code building, as compared to the same <BR>> build process used under Fedora 9.<BR><BR>This is very weird. Can you try to use the compiler separately? The <BR>following command will give you the internal compile options mpicc is using:<BR><BR> shell$ mpicc -show<BR><BR>Can you send us the output for this, and also make sure the correct <BR>compiler is being used, the compiler works fine (by trying out some <BR>simple program), etc.?<BR><BR>Ok. Will run the command and collect the data. However, using the instructions on Page 22 of the installer manual, basic test programs are premade. I just run the resulting ./cpi that is produced thereby. If I take a cpi built under Fedora 9, it runs just fine. I must be missing something simple if this sounds weird to you and you have tried it on Fedora 10 yourself. (On Fedora 9 I built the code using mpicxx.)</P>
<P>Some workmen are in my office so I shut the network down. Will bring it back up after lunch. They should be done by then.</P>
<P>Best,</P>
<P>Peter.</P></html>