Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!crdgw1!uunet!europa.asd.contel.com!gatech!hubcap!fpst
From: reinhard@rice.edu (Reinhard von Hanxleden)
Newsgroups: comp.parallel
Subject: Connection Machine Fortran
Keywords: Connection Machine, Irregulare Problems, Vectorizers
Message-ID: <1991May30.163634.17582@rice.edu>
Date: 30 May 91 16:36:34 GMT
Sender: news@rice.edu (News)
Organization: Rice University
Lines: 39
Approved: parallel@hubcap.clemson.edu
Originator: reinhard@cimbria.rice.edu


Dear netters,

I would be grateful for comments/references on two issues regarding the 
Connection Machine.

1. IRREGULAR PROBLEMS  (PIC codes, sparse matrices, _your favorite_, ...)
  - Which problems have been tackled? How did the implementation differ 
    from equivalent MIMD implementations?
  - Have "classic" (MIMD) load balancing paradigms (e.g. recursive bisection)
    been applicable?
  - Any experiences in using indirection vectors to distribute a problem 
    evenly?

2. GENERATING EFFICIENT CM-FORTRAN (CMF) FROM F77 / F90
  - Who has experiences in tackling this with standard vectorizers?
    (One report I am aware of is by J. Myczkowski and R. Shapiro, trying
    the KAP vectorizer on 4 small samples; J. Mellor-Crummey has used PFC
    on a larger weather code.)
  - Have any vectorizers been modified for this task yet?
  - Any attempts to generate Layouts / Alignments, Foralls, or other CMF-
    specialities automatically from either F77 or F90? Have any major
    problems been identified yet? (Now, THIS should cause an avalanche,
    right?)

Any piece of information will be appreciated, collected, and - if
sufficient interest arises - be posted. Thanks in advance,

Reinhard v. Hanxleden			

reinhard@rice.edu 
Department of Computer Science, Rice University
P.O. Box 1892, Houston, TX 77251, (713) 527-4834

-- 
=========================== MODERATOR ==============================
Steve Stevenson                            {steve,fpst}@hubcap.clemson.edu
Department of Computer Science,            comp.parallel
Clemson University, Clemson, SC 29634-1906 (803)656-5880.mabell