This paper describes the basic concepts of our solution to
improve the performance of Ethernet Communication on a Linux Cluster
environment by introducing Reliable Low Latency Ethernet Sockets. We
show that about 25% of the socket latency can be saved by using our
simplified protocol. Especially, we put emphasis on demonstrating that
this performance benefit is able to speed up the MPI level
communication. Therefore we have developed a new BTL component for Open
MPI, an open source MPI-2 implementation which offers with its Modular
Component Architecture a nearly ideal environment to implement our
changes. Microbenchmarks of MPI collective and Point-to-Point operations
were performed. We see a performance improvement of 8% to 16% for LU and
SP implementations of the NAS parallel benchmark suite which spends a
significant amount of time in the MPI. Practical application tests with
Abinit, an electronic structure calculation program, show that the
runtime of be nearly halved on a 4 node system. Thus we show evidence
that our new Ethernet communication protocol is able to increase the
speedup of parallel applications considerably.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:18550 |
| Date | 20 July 2006 |
| Creators | Hoefler, Torsten, Reinhardt, Mirko, Mietke, Frank, Mehlan, Torsten, Rehm, Wolfgang |
| Publisher | Technische Universität Chemnitz |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | doc-type:workingPaper, info:eu-repo/semantics/workingPaper, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | urn:nbn:de:bsz:ch1-qucosa-228139, qucosa:20770 |
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