From ksantos@purdue.edu Thu Mar 16 02:10:23 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!purdue!ksantos
From: ksantos@purdue.edu (Kirsty Santos)
Newsgroups: comp.sys.m68k
Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Mar16.021023.7780@purdue.edu>
Date: Thu, 16 Mar 1995 02:10:23 GMT
Organization: Purdue University Engineering Computer Network
NNTP-Posting-Host: purdue.edu
X-Newsreader: TIN [version 1.2 PL2]
Lines: 10

Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.

Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes.
A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions.

Anyone running this on a Quadra 840AV with the 68040?

-- 
Kirsty Santos
Tape trading list upon request. SASE required for international mail.

From ffournier@u-tokyo.ac.jp Fri Mar 17 18:34:23 1995
Path: ashpoly!cascade!bigsur!u-tokyo!ffournier
From: ffournier@u-tokyo.ac.jp (Fiona Fournier)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Mar17.183423.5986@u-tokyo.ac.jp>
Date: Fri, 17 Mar 1995 18:34:23 GMT
References: <1995Mar16.021023.7780@purdue.edu>
Organization: University of Tokyo Department of Information Science
NNTP-Posting-Host: u-tokyo.ac.jp
X-Newsreader: Netscape 1.1N
Lines: 9

In article <1995Mar16.021023.7780@purdue.edu>, ksantos@purdue.edu (Kirsty Santos) writes:
> Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining.
> Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes.

Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

-- 
Fiona Fournier
Tape trading list upon request. SASE required for international mail.

From mpetrov@pacbell.net Sat Mar 18 00:21:23 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!pacbell!mpetrov
From: mpetrov@pacbell.net (Marta Petrov)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5
Message-ID: <1995Mar18.002123.6757@pacbell.net>
Date: Sat, 18 Mar 1995 00:21:23 GMT
References: <1995Mar16.021023.7780@purdue.edu> <1995Mar17.183423.5986@u-tokyo.ac.jp>
Organization: Pacific Bell Internet Services
NNTP-Posting-Host: pacbell.net
X-Newsreader: WinVN 0.99.5
Lines: 9

In article <1995Mar17.183423.5986@u-tokyo.ac.jp>, ffournier@u-tokyo.ac.jp (Fiona Fournier) writes:
> Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field.

-- 
Marta Petrov | mpetrov@pacbell.net
PGP Key fingerprint: 38EE B01A 50B4 316E
"Keep the channels open."