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Performance of PFs, the Compaq Sierra Product's Parallel File System.

DE200415006183

Publication Date	2001
Personal Author	Uselton, A. C.
Page Count	22
Abstract	In FY 2000 Livermore Computing took delivery of serial number one of the Compaq Sierra high performance cluster product. The Sierra product employs a derivative of the Tru64 UNIX operating system called Tru-Cluster, which provides a cluster-wide parallel file system called PFS. This report documents the observed performance of PFS along with the performance of some of the underlying file system components. Testing reveals that the underlying AdvFS file system does a good job of read-ahead and write-behind I/O performance enhancement at the expense of a high CPU utilization. On the other hand, PFS performs at only a fraction of the speed that the underlying I/O and communication hardware allow.
Keywords	Clustering Data systems (Computers) Mass storage Parallel processing (Computers) Input/Output routines Data transfer (Compiters) Data storage Storage Data management Computer files Performance Charts Compac Sierra UNIX operating system Parallel file system (PFS)
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200415

Performance of PFs, the Compaq Sierra Product's Parallel File System.

Performance of PFs, the Compaq Sierra Product's Parallel File System.
DE200415006183

Publication Date	2001
Personal Author	Uselton, A. C.
Page Count	22
Abstract	In FY 2000 Livermore Computing took delivery of serial number one of the Compaq Sierra high performance cluster product. The Sierra product employs a derivative of the Tru64 UNIX operating system called Tru-Cluster, which provides a cluster-wide parallel file system called PFS. This report documents the observed performance of PFS along with the performance of some of the underlying file system components. Testing reveals that the underlying AdvFS file system does a good job of read-ahead and write-behind I/O performance enhancement at the expense of a high CPU utilization. On the other hand, PFS performs at only a fraction of the speed that the underlying I/O and communication hardware allow.
Keywords	Clustering Data systems (Computers) Mass storage Parallel processing (Computers) Input/Output routines Data transfer (Compiters) Data storage Storage Data management Computer files Performance Charts Compac Sierra UNIX operating system Parallel file system (PFS)
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200415