Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!zaphod.mps.ohio-state.edu!lavaca.uh.edu!karazm!jet From: jet@karazm.math.uh.edu (J. Eric Townsend) Newsgroups: comp.sys.dec Subject: Re: Question regarding DS3100 Floating Point Keywords: FP coprocessor Message-ID: <1990Feb14.000213.6413@lavaca.uh.edu> Date: 14 Feb 90 00:02:13 GMT References: <119@hammer.UUCP> Sender: nntppost@lavaca.uh.edu (NNTP Posting Service) Organization: University of Houston -- Department of Mathematics Lines: 15 In article <119@hammer.UUCP> jockc@idsila.com (Jock Cooper) writes: >I have this ray tracing toy that runs faster on our MicroVax >(has FP coprocessor) than on my DECstation 3100. Does the 3100 >have a Floating Point chip or what? Or is it an option? Another question. Using a Fortran compiled executables in double precision are more than 5 times as slow as single precsion... Any ideas? This is for something that's definately out of cache, fyi. -- J. Eric Townsend University of Houston Dept. of Mathematics (713) 749-2120 jet@karazm.math.uh.edu Skate UNIX(tm).