Path: utzoo!attcan!uunet!husc6!bloom-beacon!mit-eddie!ll-xn!ames!pioneer!eugene From: eugene@pioneer.arpa (Eugene N. Miya) Newsgroups: comp.lang.fortran Subject: Re: Fortran follies Message-ID: <10757@ames.arc.nasa.gov> Date: 23 Jun 88 20:27:59 GMT References: <5377@cup.portal.com> <2852@mmintl.UUCP> <1005@cresswell.quintus.UUCP> <701@garth.UUCP> <2157@sugar.UUCP> <777@garth.UUCP> Sender: usenet@ames.arc.nasa.gov Reply-To: eugene@pioneer.UUCP (Eugene N. Miya) Organization: NASA Ames Research Center, Moffett Field, Calif. Lines: 22 In article <777@garth.UUCP> smryan@garth.UUCP (Steven Ryan) writes: >64 elements for a Cray, 4096 for a Cyber 990, 65535 for a Cyber 205/ETA 10. >I don't know what IBM vectors are like. Is the Hitachi machine (?VPxxxx) >in existent yet? FYI: IBM 3090 is 128 32-bit elements or 64 64-bit elements. Flame on: What burns me up about these figures is that some literature has IBM making vectors legit (e.g., didn't they invent virtual memory? ;-) "Don't mind the man behind the curtain") and that 64-elements was determined to be the best length by sophisticated research (probably market rather than simulation). Anyway flame off. You are confusing the Hitachi and the Fujitsu. The Hitachi S-810 line is an IBM 370 compatible long vector machine. I've not run on it. The Fujitsu VP-200 [also 50, 100, and 400] aka Amdahl 1200 is also 370-compatible and long vectors [not compat] have 65K length vectors closer to the 205/10s. They were built and delivered years ago (82/3). The VP line is the second most populous supercomputer in the world. 4K length vectors for the 990 sound interesting. I should go try one.