An Ultrahigh Performance MPI Implementation on SGI® ccNUMA Altix® Systems

• Autorzy: Feind K. , McMahon K.
• Konferencja: SGIUG 2006 Technical Conference, Las Vegas, June 5-9 2006
• Języki publikacji: EN

Abstrakty

EN

The SGI® Message Passing Toolkit (MPT) software has implemented algorithms that provide extremely high-performance message passing on SGI Altix systems based on the SGI NUMAlink™ interconnect technology. Using Linux® OS infrastructure and SGI XPMEM cross-host memory-mapping software, SGI MPI delivers extremely high MPI performance on shared-memory single host/SMP Altix systems as well as multihost superclusters. This paper outlines the Altix hardware features, OS features, and library software algorithms that have been developed to provide the low-latency and high-bandwidth capabilities. We present high-performance features like direct copy send/receive, collectives, and the ultralow-latency SHMEM™ data transfer library. We include MPI benchmark results, including an MPI ping pong latency that ranges from 1.2 to 2.3 microseconds on a 512-CPU Altix system with 1.5 GHz Intel® Itanium® 2 Processors.

Słowa kluczowe

EN

MPI; MPT; message passing; ccNUMA; Altix; memory access; shared memory; high bandwidth; low latency

• Wydawca: Institute of Bioorganic Chemistry Scientific Publishers OWN, Polish Academy of Sciences
• Czasopismo: Computational Methods in Science and Technology
• Rocznik: 2006
• Tom: Vol. spec. issue
• Strony: 67--70
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Feind K.

autor

McMahon K.

• Silicon Graphics, Inc.

Bibliografia

• [1] http://www.mpi-forum.org/docs/docs.html
• [2] intro_shmem man page at http://docs.sgi.com
• [3] http://www.shmem.org
• [4] R. Barriuso and A. Knies, SHMEM User's Guide for Fortran, Cray Research Inc. (June 1994)
• [5] Michael Woodacre, Derek Robb, Dean Roe and Karl Feind, The SGI Altix 3000 Global Shared-Memory Architecture, http://www.sgi.com/pdfs/3474.pdf
• [6] Exploiting the Scalability and Power of FLUENT: The SGI Message Passing Toolkit on the SGI Altix High-Performance Computing Platform powered by the Intel Itanium 2 Processor; Whitepaper by Intel, Fluent, and SGI; http://www.sgi.com/pdfs/3807.pdf
• [7] shmem_ptr() and MPI_SGI_globalptr() man pages at http://docs.sgi.com