[Beowulf] TOE on Linux?

Gilad Shainer Shainer at mellanox.com
Tue May 20 09:22:38 PDT 2008

> > afaik, RDMA is used by some MPI implementations;
> ... usually only for long messages; pretty much all 
> non-Ethernet hardware implements some kind of remote DMA for 
> this purpose. For short messages, it doesn't matter if you 
> copy the data.

RDMA != zero copy. In some non-Ethernet solutions you can do zero copy
with send/receive as well. Beside the usage for large messages, there
are other apps that use RDMA to better manage remote data base, one
example is creating shared cache.


More information about the Beowulf mailing list