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From: hooft@ruunsa.fys.ruu.nl (Rob Hooft)
Newsgroups: comp.benchmarks
Subject: Re: Don't use bc (was: More issues of benchmarking)
Message-ID: <1826@ruunsa.fys.ruu.nl>
Date: 7 Dec 90 08:15:55 GMT
References: <39871@ucbvax.BERKELEY.EDU> <1990Dec3.204027.16794@cs.utk.edu> <109872@convex.convex.com> <1211@sunc.osc.edu>
Organization: University of Utrecht, Dept. of Physics
Lines: 35

In <1211@sunc.osc.edu> djh@xipe.osc.edu (David Heisterberg) writes:
>In article <109872@convex.convex.com> patrick@convex.COM (Patrick F. McGehearty) writes:
>>	program main
>>	call matmul(a,b,c,256)
>>...
>>	  do k = 1, n
>>	    c(i,j) = c(i,j) + a(i,k)*b(k,j)
>>	  enddo

>Won't Convex performance suffer here due to bank conflicts?

Convex is good! See below for the compiler results.


            Optimization by Loop for Routine MATMUL

Line     Iter.   Reordering            Optimizing / Special            Exec.
Num.     Var.    Transformation         Transformation                  Mode 
-----------------------------------------------------------------------------
   5     I       Dist                                                         
   5-1   I       FULL VECTOR Inter                                            
   5-2   I       FULL VECTOR Inter                                            
   6-1   J       Scalar                                                       
   6-2   J       Scalar                                                       
   8-2   K       Scalar                                                       

Line     Iter.   Analysis
Num.     Var.             
-----------------------------------------------------------------------------
   5-1   I       Interchanged to innermost
   5-2   I       Interchanged to innermost

-- 
Rob Hooft, Chemistry department University of Utrecht.
hooft@hutruu54.bitnet hooft@chem.ruu.nl hooft@fys.ruu.nl