Rob Latham <r...@mcs.anl.gov> writes: >> Assuming MPI-IO, to be on-topic, is MX known to have any real advantage >> over TCP filesystem drivers, e.g. Lustre and PVFS? > > Both lustre (portals) and PVFS (BMI) have transport abstraction > layers. File systems benefit from native transport (compared to > ip-over-whatever) both in terms of latency (how fast metadata > operations take) and in bandwidth (moving lots of data to/from file > system). > > not sure if that's what you were asking...
Yes. I just haven't seen numbers to know how significant the effect is in that case, apart from some for NFS RDMA. I'd rather expect MX support to be broken now anyway; apparently even IB is in released orange PVFS which I'd intended to measure.
