[Beowulf] MPICH question
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John Lau cflau at clustertech.comMon Feb 21 17:30:29 PST 2005
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Hi, I have a question on the number of processes spawned by MPICH. I am using MPICH 1.2.5.2 --with-device=ch_p4. When I use mpirun -np 4 to start a mpi process, total 8 processes will be spawned. But only 4 processes have loadings on CPUs. I would like to know if it is the correct behavior of MPICH? And what's the use of the 4 no-loading process? Thank you. Best regards, John Lau -- John Lau Chi Fai Cluster Technology Ltd. cflau at clustertech.com Tel: (852) 2994-3727 Fax: (852) 2994-2101
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