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Abstract--As symmetric multiprocessors become commonplace, the interconnection networks and the
 

Summary: Abstract--As symmetric multiprocessors become
commonplace, the interconnection networks and the
communication system software in clusters of multiprocessors
become critical to achieving high performance. Recently, Sun
Microsystems has introduced a new system area network, Sun
Fire Link interconnect, for its Sun Fire cluster systems. Sun Fire
Link is a memory-based interconnect, where Sun MPI uses the
Remote Shared Memory (RSM) model for its user-level inter-
node messaging protocol.
In this paper, we present the overall architecture of the Sun
Fire Link interconnect, explain how communication is done
under the RSM, and describe the Sun MPI implementation. We
provide an in-depth performance evaluation of the Sun Fire Link
interconnect cluster of four Sun Fire 6800s at the RSM layer,
MPI microbenchmark layer, and the application layer. Our
results include the performance of the Remote Shared Memory
API primitives, MPI overhead on top of the RSM, latency and
bandwidth under different communication modes, parameters of
the LogP model, collective communications, permutation
communications, and two applications (Sphot and SMG2000)

  

Source: Afsahi, Ahmad - Department of Electrical and Computer Engineering, Queen's University (Kingston)

 

Collections: Computer Technologies and Information Sciences