Hello, I am using MPICH 3.0.4 with asynchronous progress enabled along with KNEM module on my system. I have a DMA unit available and it is properly used by KNEM. When I try a benchmark using non-blocking comm. there is computation-communication overlap, but when I try the same using 1-sided communication there is no overlap. It seems like MPICH is not using KNEM for 1-sided comm. Do you have any idea why this might be? Best, Nikola