On 01/03/2011 08:57 AM, Jin Jianyong wrote: > Which version of MPICH2 (IA32 or EMT64) should I use? What is the > difference? If you could help me, I will be grateful. IA32 is 32-bit and EMT64 is 64-bit. -- Pavan -- Pavan Balaji http://www.mcs.anl.gov/~balaji