[mpich-discuss] Executing MPI in 32-bit and 64-bit CPUs

[Jayesh Krishna]

Hi,
 MPICH2 currently does not support heterogeneous systems with different data representations (You cannot run your MPI job across 32-bit and 64-bit machines). If you want to run your MPI job across heterogeneous systems you might have to consider using MPICH-1 (this version is years old and available at http://www.mcs.anl.gov/research/projects/mpi/mpich1-old/).

Regards,
Jayesh
----- Original Message -----
From: "aaa aaaa" <jsprnclrtrbrt at hotmail.com>
To: mpich-discuss at mcs.anl.gov
Sent: Wednesday, June 16, 2010 2:57:36 AM GMT -06:00 US/Canada Central
Subject: [mpich-discuss] Executing MPI in 32-bit and 64-bit CPUs


Good morning. 


My name is Josep Arnau and I am a Robotic student in the UPC, in Barcelona, Spain. I am currently working on a project that needs a lot of computation, so I was planning on using MPI to do some parallel computation in order to decrese the calculation time. 


The thing is that half the CPUs available are 32-bit, the other half 64-bit, and I was wondering if it is possible for the MPI libraries to work with all the machines in one cluster. I have been surfing the web for more info related to this topic but couldn't find something enough concluding. 


So, could I work with all machines in one shot? That's my question. 


By the way, congratulations for your software; it is being very helpful in my project and will safe me a lot of time :D. 


Thanks and have a good day. 

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