Why Intel mpi is very slow as compared to others - Ocean Modeling Discussion

Why Intel mpi is very slow as compared to others

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prakrati: Posts: 24; Joined: Thu Oct 21, 2010 9:35 pm; Location: CRL

Why Intel mpi is very slow as compared to others

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#1 Unread post by prakrati » Wed Feb 23, 2011 3:33 am

Dear Sir/Madam

I ran ROMS for 64 to 1024 ranks with intel mpi and got very poor results.Then I ran ROMS with open mpi and got good results.I am very confused as to why intel mpi is so slow as compared to open mpi.Please help

Thanks and Regards
Prakrati

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