Slow 32-bit Performance on Irix 6.0

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Rod Recker (rjr++at++lightscape.com)
Wed, 1 Mar 1995 10:30:26 -0800

I recently tested our software (compiled for IRIX 5.3 and Mips I instruction
set) on a Power Indigo 2 running IRIX 6.0.1. The software ran with no problems.
However, the performance was 50% slower than running on a 200 MHz R4400 Indigo
2 with IRIX 5.3.

This was just a preliminary test and was by no means what I would call
comprehensive. The application didn't involve any graphics. It is a radiosity
calculation module that is part of our visualization system. It is very
floating point intensive.

Is there anything we can do to improve the performance _without_ porting to
IRIX 6.0? We have some customers who have purchased R8000 machines and will be
running our software. I'd like to know if there is anything we can do for them
today.

-- 
Rod Recker             
rjr++at++lightscape.com      Lightscape Technologies, Inc.
(408) 246-1155 x104     4030 Moorpark Ave., Suite 219
(408) 246-0255 (fax)    San Jose, CA  95117  USA
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