Performance Comparison of GPFS 1.3 and GPFS 1.4 for POSIX and MPI-IO.

Hedges, R. M. ; Loewe, W. E.

Technical Information Center Oak Ridge Tennessee

关键词: Parallel processing;    Performance;    G codes;    Comparative evaluations;    Data transmission;   

RP-ID  :  DE200415007273

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

This report by the SIOP observes the effects of recent hardware and software changes for parallel I/O performance to the GPFS parallel file system. The IBM SP machine (frost) has been upgraded from Mohonk with GPFS 1.3 to Mohonk2 with GPFS 1.4. In addition, the Colony switch adapters have been upgraded from Single/Single to Double/Single. The tests discussed here were performed on frost using 60 compute nodes and the GPFS file system using 2 dedicated I/O nodes (servers). The tests performed utilize the POSIX and MPI-IO interfaces to GPFS.