4 ms·
As the paper mentions, latency of this magnitude is already available to HPC using RDMA on top of InfiniBand or 10GigE. I don't think 10GigE will be a special p
by tmurray 15y ago
As the paper mentions, latency of this magnitude is already available to HPC using RDMA on top of InfiniBand or 10GigE. I don't think 10GigE will be a special purpose interconnect that much longer and IP over OFED (OpenFabrics, the very low-level API to handle these kinds of devices) is terrible, so I wouldn't be surprised if we see some applications start looking at OFED (probably initially via MPI because that exists and is stable, but eventually via new communications libraries) for achieving very low latency using RDMA and polling instead of OS primitives.
- davidyz 15y agoDoes the average programmer find RDMA difficult to use? Explicit buffer management and reuse / reregistration seem like a rather heavy burden on the application. I think the paper provides good value in raising that abstraction to something more usable.