Path: utzoo!attcan!uunet!husc6!cmcl2!nrl-cmf!ames!pasteur!ucbvax!decwrl!labrea!sri-unix!garth!smryan From: smryan@garth.UUCP (Steven Ryan) Newsgroups: comp.lang.fortran Subject: Re: Fortran follies Summary: Oh? Vector machines. Message-ID: <800@garth.UUCP> Date: 24 Jun 88 23:50:16 GMT References: <5377@cup.portal.com> <2852@mmintl.UUCP> <1005@cresswell.quintus.UUCP> <701@garth.UUCP> <2157@sugar.UUCP> <777@garth.UUCP> <10757@ames.arc.nasa.gov> Reply-To: smryan@garth.UUCP (Steven Ryan) Organization: INTERGRAPH (APD) -- Palo Alto, CA Lines: 28 In article <10757@ames.arc.nasa.gov> eugene@pioneer.UUCP (Eugene N. Miya) writes: >FYI: >IBM 3090 is 128 32-bit elements or 64 64-bit elements. Thankyou. I really only know about Cray and CDC machines. >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 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ (I thought it was somebody English like Atlas) >the man behind the curtain") and that 64-elements was determined to be >the best length by sophisticated research (probably market rather than >simulation). I dislike IBM on general principles. (That is, besides being the other guy.) So small sounds like vector registers rather than memory to memory vectors. >4K length vectors for the 990 sound interesting. I should go try one. Disclaimer: this is a personal comment without very much knowledge of the current situation: The hardware is ready, but I am not sure those dinks will ever get their *** together and produce a reasonable compiler. 990 is also a memory to memory vector machine. By the way 4K is also the minimum page size for a 990. So a vector (except gather/scatter) resides on at most two pages. Isn't that magical?