Re: Any thoughts on BEEP over MPI?
Sam Roberts <sroberts <at> uniserve.com>
2006-04-26 05:59:08 GMT
Quoting vijay <at> saraswat.org, on Sun, Apr 09, 2006 at 02:24:59PM -0400:
> Marshall Rose wrote:
> >>I'm trying to figure out if MPI is a general enough message passing
> >>protocol that you could implement BEEP over it, and whether it would
> >>be a good idea. In particular, whether MPI could be faster than TCP.
> >>Any pointers or thoughts would be greatly appreciated.
> >MPI = http://www-unix.mcs.anl.gov/mpi/standard.html ??? or something
> Very odd thought.
> MPI is used widely as a message-passing API (particularly w/ C,C++ and
> Fortran) for high performance computing HPC). The synchronous (2-way)
> MPI is used much more widely than the 1-way (remote memory read/write)
> enabled version. It supports user-space synchronous message-passing.
> (There is also support, using immediate/nonblocking mode for
> asynchronous messaging.) The bulk of MPI is oriented towards supporting
> collective operations (e.g. all reduce) over a group of such processes
> participating in point to point interactions with each other (grouped
> together in a communicator). Not sure this is particularly relevant for
> Why would you want to do this? Perhaps what you might be after is that
> often HPC clusters are built over extremely high-performance
> interconnects that are non-IP-based. For instance, ARMCI and LAPI, based
> on infiniband/quadrics/myrinet/IBM Federation switches and other