Path: utzoo!attcan!uunet!lll-winken!csd4.milw.wisc.edu!mailrus!uflorida!gatech!hubcap!northrup
From: northrup@wpi.wpi.edu (Jim Northrup)
Newsgroups: comp.parallel
Subject: Re: Language support for vector (parallel) what evers
Message-ID: <5501@hubcap.clemson.edu>
Date: 16 May 89 20:16:06 GMT
Sender: fpst@hubcap.clemson.edu
Lines: 17
Approved: parallel@hubcap.clemson.edu

My experience has been that whenever you want to vectorize (or just parallel-
ize) existing serial code, you're going to have to go through the program
anyway looking for dependencies.  By making myself convert existing loops
into vector (or parallel) constructs explicitely, I catch dependencies that
I might have otherwise overlooked.  So, if you really do want fast code, I'm
an advocate of doing it by hand.  The bottom line, I think, is that it's a
trade off between how fast you want the program to go, and how much time
you're willing to spend on it.

It's kind of like the trick of proof-reading a document backwards, so that
your eye won't skip over errors.

-- 
Jim Northrup                                               northrup@wpi.wpi.edu
Assistant Professor, Department of Mathematical Sciences
Worcester Polytechnic Institute, Worcester MA  01609
I wish I could hear the soundtrack to my life.  Then I would know when to duck.