Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!sdd.hp.com!ucsd!ames!sgi!shinobu!odin!schreiber!schreiber From: schreiber@schreiber.asd.sgi.com (Olivier Schreiber) Newsgroups: comp.benchmarks Subject: Re: Approximate MFLOPS Message-ID: <1990Nov26.191342.7610@odin.corp.sgi.com> Date: 26 Nov 90 19:13:42 GMT References: <1131@cnw01.storesys.coles.oz.au> <6760@uceng.UC.EDU> Sender: news@odin.corp.sgi.com (Net News) Organization: Silicon Graphics, Inc. Mountain View, CA Lines: 23 In mccalpin@perelandra.cms.udel.edu (John D. McCalpin) writes: >First, the LINPACK 100x100 test is a fairly exact and repeatable >measure of MFLOPS. It is only "fairly" exact since the vendor is >allowed to re-write the BLAS-1 (Basic Linear Algebra Subroutines) >however s/he wants in order to improve performance. On the other >hand, the vendor is *not* allowed to modify the source at all -- not >even the comments! Presumably this is intended to mimic the situation Reading the Dongarra CS-89-85 report, my understanding is that for the LINPACK 100x100 test, one is not allowed to modify the BLAS-1 Basic Linear Algebra Subroutines either as they are contained in the source code obtained from netlib. The Dongarra CS-89-85 report may be obtained by mail netlib@ornl.gov send performance from benchmark A post script copy of the paper by J. Dongarra, `Performance of Various Computers Using Standard Linear Algebra Software in a Fortran Environment' -- Olivier Schreiber schreiber@schreiber.asd.sgi.com Tel(415)335 7353 Advanced Systems Division MS 7L580 Silicon Graphics Inc., 2011 North Shoreline Blvd. Mountain View, Ca 94039-7311