[Beowulf] Using Autoparallel compilers or Multi-Threaded libraries with MPI
hahn at mcmaster.ca
Thu Nov 29 22:02:58 PST 2007
> provide some thread-level parallelism on a cluster where you primarily
> use MPI to achieve your parallel execution.*
either threads for low-investment newbie parallelism
or MPI for serious scalability.
> Have you used compiler auto-parallel features mixed with MPI with
> success on your clusters?
only for running HPL (where, iirc, it wasn't a win). it makes sense
that if you've taken the trouble to use MPI, you probably have more
concurrency available than just threaded blas/lapack calls.
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