Why Intel mpi is very slow as compared to others

General scientific issues regarding ROMS

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

Why Intel mpi is very slow as compared to others

#1 Post by prakrati »

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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