Damien -

I'm using the 32 bit version of OpenMPI. I think the 64 refers to the size of integer that the function works on, not the operating system version. I didn't have this problem with VS 2008, so I think they've changed something in VS 2010. I just don't know how to fix it.

- Jeff

From: Damien <damien@khubla.com>
To: Open MPI Users <users@open-mpi.org>
Date: 06/24/2011 02:35 PM
Subject: Re: [OMPI users] Problem with prebuilt ver 1.5.3 for windows
Sent by: users-bounces@open-mpi.org

Jeff,

InterlockedCompareExchange64 is a 64-bit-only instruction. Are you running XP 32-bit (I think you are b/c I don't think there was a XP64 SP3...). You need the 32-bit OpenMPI version. If you are running a 64-bit OS, but building a 32-bit executable, that instruction isn't available in 32-bit and you still need to link with 32-bit OpenMPI.

Damien

On 24/06/2011 12:16 PM, Jeffrey A Cummings wrote:
I'm having a problem using the prebuilt Windows version 1.5.3 with my app built with MS VisualStudio 2010. I get an error message (for each node) that says: "The procedure entry point InterlockedCompareExchange64 could not be located in the dynamic link library KERNEL32.dll". I'm running Windows XP, sp 3.

- Jeff Cummings
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