[mpich-discuss] Does MPICH implements polling mechanism on MPI_Recv?

[Anatoly G]

Dear MPICH forum.
I created an endless MPI program.
In this program each process calls MPI_Recv from other process, w/o any MPI
_Send.
When I execute this program I see each process takes ~ 100% CPU core.
Is this behavior (I suppose polling) is normal?
May I reduce MPI_Recv CPU penalty?

Regards,
Anatoly.
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