From emartinez@utexas.edu Tue Oct 10 09:56:11 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!utexas!emartinez From: emartinez@utexas.edu (Elaine Martínez) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct10.095611.1045@utexas.edu> Date: Tue, 10 Oct 1995 09:56:11 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: Netscape 1.1N Lines: 11 Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Elaine Martínez | emartinez@utexas.edu PGP Key fingerprint: 97B2 A0A8 AE32 9EB6 "Keep the channels open." From dmartinez@cmu.edu Wed Oct 11 23:02:11 1995 Path: ashpoly!cascade!bigsur!cmu!dmartinez From: dmartinez@cmu.edu (Dmitri Martínez) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct11.230211.6798@cmu.edu> Date: Wed, 11 Oct 1995 23:02:11 GMT References: <1995Oct10.095611.1045@utexas.edu> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Oct10.095611.1045@utexas.edu>, emartinez@utexas.edu (Elaine Martínez) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Dmitri Martínez Opinions expressed are solely my own and not those of Carnegie Mellon University School of CS. ------------------------------------------------------------ From stanaka@uni-hamburg.de Thu Oct 12 04:35:11 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uni-hamburg!stanaka From: stanaka@uni-hamburg.de (Sun-mi Tanaka) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct12.043511.9394@uni-hamburg.de> Date: Thu, 12 Oct 1995 04:35:11 GMT References: <1995Oct10.095611.1045@utexas.edu> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Oct10.095611.1045@utexas.edu>, emartinez@utexas.edu (Elaine Martínez) writes: > Can a 1989 Mac IIci decode a 40-minute LP in reasonable time? The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Sun-mi Tanaka *PLONK* filter active for trolls. Commodore Amiga 500 (1MB OCS) - NetBSD 1.0 From soliveira@uu.net Fri Oct 13 17:03:11 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uu!soliveira From: soliveira@uu.net (Sven Oliveira) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct13.170311.1019@uu.net> Date: Fri, 13 Oct 1995 17:03:11 GMT References: <1995Oct10.095611.1045@utexas.edu> <1995Oct11.230211.6798@cmu.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Oct11.230211.6798@cmu.edu>, dmartinez@cmu.edu (Dmitri Martínez) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. PGP Public key available via finger or upon request. -- Sven Oliveira -- UUNET Technologies, Falls Church VA "In theory there is no difference between theory and practice."