GAMMA and MPI/GAMMA on Gigabit Ethernet

  • Authors:
  • Giuseppe Ciaccio;Giovanni Chiola

  • Affiliations:
  • -;-

  • Venue:
  • Proceedings of the 7th European PVM/MPI Users' Group Meeting on Recent Advances in Parallel Virtual Machine and Message Passing Interface
  • Year:
  • 2000

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Abstract

The Genoa Active Message MAchine (GAMMA) is a light-weight communication system based on the Active Ports paradigm, originally designed for efficient implementation over low-cost Fast Ethernet interconnects. A very efficient porting of MPICH atop GAMMA as been recently completed, providing unprecedented messaging performance over the cheapest cluster computing technology currently available. In this paper we describe the recently completed porting of GAMMA to the GNIC-II Gigabit Ethernet adapters by Packet Engines. A combination of less than 10 µs latency and more than 93 MByte/s throughput demonstrates the possibility for Gigabit Ethernet and GAMMA to yield messaging performance comparable to the ones from many lightweight protocols running on Myrinet. This result is of interest, given the envisaged drop in cost of Gigabit Ethernet due to the forthcoming transition from fiber optic to UTP cabling and ever increasing mass market production of such standard interconnect.