On Nov 28, 2007, at 12:31 AM, amjad ali wrote:
Hello,
Because today the clusters with multicore nodes are quite common
and the cores within a node share memory.
Which Implementations of MPI (no matter commercial or free), make
automatic and efficient use of shared memory for message passing
within a node. (means which MPI librarries auomatically communicate
over shared memory instead of interconnect on the same node).
Our fairly basic tests showed that LAM-MPI is measurably more
efficient than other MPI implementations when the architecture
includes a mix of both intra-node and inter-node communication
paths. The tests were all done over gigabit ethernet.
charlie
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