Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site brl-tgr.ARPA Path: utzoo!watmath!clyde!bonnie!akgua!sdcsvax!dcdwest!ittvax!decvax!genrad!wjh12!talcott!harvard!seismo!brl-tgr!tgr!T S LandeFrom: T S Lande Newsgroups: net.unix-wizards Subject: f77 performance Message-ID: <6214@brl-tgr.ARPA> Date: Fri, 30-Nov-84 03:32:38 EST Article-I.D.: brl-tgr.6214 Posted: Fri Nov 30 03:32:38 1984 Date-Received: Sun, 2-Dec-84 05:48:57 EST Sender: news@brl-tgr.ARPA Organization: Ballistic Research Lab Lines: 13 A user on our VAX-11/780 are running performance-tests on different machines. The program is aprox. 7000 lines of FORTRAN. The performance on the 780 is only 0.75 of a 750 running VMS. The comparison was done between computer-bound parts of the program. When it comes to I/O it's even worse. I have heard that the f77-compiler is not too good. Is this the main reason or is UNIX giving less troughput than VMS? What about C? Would C-coded programs increase performance significantly? Bassen