> 1. Sometimes observe RDMA data transfer stalls of ~ 1.0 second Could it be an RNR NAK? You didn't really describe your protocol, but if you use send operations and if you do a send without a matching receive on the other side, then you might end up stalling the QP for a while.
> 2. Creation of a Queue Pair is rejected when I have mapped a region of > memory greater than about 1.35GB. I don't really understand this problem. Are you able to map more memory, and then ibv_create_qp() fails if you do? Later you say > Ideally, we would like the to be able to write anywhere within a 2GB > (or larger) shared memory segment. However, when I attempt to do this, > the call to fails with REJ. You didn't say which call fails with REJ, and I'm not even sure I understand what it means to "fail with REJ". On x86-64, the limit on how much memory you can register should be much higher, closer to 32 GB by default. - R. _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
