<div>Hello, everyone</div>
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<div>I am testing MPICH2 on 24 cores SMP machine.</div>
<div>And, I installed MPICH2 with three devices (nemesis, ssm, shm) separately and run parallel program with each device.</div>
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<div>However, it seems that no device was using shared memory when I checked the performance</div>
<div>and network status using netstat command (a lot of sockets created for self connection)</div>
<div>Of course, I could not see any shared memory segments through ipcs -m and free commands</div>
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<div>I compiled MPICH2 with three devices by below configuration options respectively</div>
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<div>./configure --prefix=.../nemesis --enable-fast=03 --with-device=ch3:nemesis</div>
<div>./configure --prefix=.../ssm --enable-fast=03 --with-device=ch3:ssm</div>
<div>./configure --prefix=.../shm --enable-fast=03 --with-device=ch3:shm</div>
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<div>and complied and run the parallel program using scripts (mpif90 and mpiexec) in different prefix directory depending on which device I used for testing.</div>
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<div>Do I need to put some another options for installing MPICH2 or running the parallel program with shared memory?</div>
<div>Is there anything I missed?</div>
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<div>I really appreciate for your concern.</div>
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<div>Thank you.</div>
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