[mpich-discuss] Problems with conversion from 32-bit to 64-bit

[Euan Barlow]

Hello,

I have been using the latest version of MPICH2 on a 32-bit windows OS with MS visual studio 2008 and I have recently converted to a 64-bit machine.

If I download the 32-bit version of MPICH2 my code successfully executes as before; however, if I then uninstall the 32-bit version and install the 64-bit version I can't get the same code to execute. The error message produced is:

"launch failed: CreateProcess(test_parallel_3.exe) on 'machine_name' failed, error 14001 - The application has failed to start because its side-by-side configuration is incorrect..."

As far as I can tell, mpiexec and smpd are both installed and working correctly. I think the problem is with Visual Studio. I have used the configuration manager to set the active solution platform to "x64" with the active solution configuration as "debug", but this doesn't seem to help. Has anyone else experienced this problem?

I would appreciate any help/advice.

Many Thanks

Euan