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one-sided communication in Intel MPI

M_Wang
Beginner
‎06-10-2010 08:52 AM
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Does Intel MPI Library support passive target one-sided communication? How about the perforamnce?
It seems the performance of passive target one-sided operations implemented through MPI-2 windows is very poor. The implementation of RMA in Intel MPI is not truly one-sided. When a process call MPI_Get/Put, the target process won't response if it is busy on its own work.
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Dmitry_K_Intel2
Employee
‎06-18-2010 02:54 AM
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Hi M Wang,

Yes it does. Intel MPI Library does supported passive one-sided communication. Performance... I don't know.
When you call MPI_Get/Put real communication will not be started until MPI_Win_Fence is called.

Regards!
Dmitry
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