From tchoi@uu.net Fri Oct 06 08:04:19 1995 Path: ashpoly!cascade!transat!ukc!fennimore!uu!tchoi From: tchoi@uu.net (Tyler Choi) Newsgroups: comp.sys.m68k Subject: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct06.080419.4256@uu.net> Date: Fri, 06 Oct 1995 08:04:19 GMT Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: Netscape 1.1N Lines: 10 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. 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? -- Tyler Choi Tape trading list upon request. SASE required for international mail. From asato@rwth-aachen.de Sun Oct 08 10:52:19 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!rwth-aachen!asato From: asato@rwth-aachen.de (Andrei Sato) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct08.105219.7209@rwth-aachen.de> Date: Sun, 08 Oct 1995 10:52:19 GMT References: <1995Oct06.080419.4256@uu.net> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Oct06.080419.4256@uu.net>, tchoi@uu.net (Tyler Choi) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Andrei Sato Hayes Optima 288 @ 28,800 bps "The carrier frequency does not drift by accident." From msato@mit.edu Tue Oct 10 04:11:19 1995 Path: ashpoly!cascade!brgate!saturno!mit!msato From: msato@mit.edu (Mikhail Sato) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct10.041119.5048@mit.edu> Date: Tue, 10 Oct 1995 04:11:19 GMT References: <1995Oct06.080419.4256@uu.net> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Oct06.080419.4256@uu.net>, tchoi@uu.net (Tyler Choi) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Mikhail Sato -- Massachusetts Institute of Technology "When every node is whole, the channel opens." From lsilva@unam.mx Wed Oct 11 11:28:19 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!unam!lsilva From: lsilva@unam.mx (Lucia Silva) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct11.112819.5480@unam.mx> Date: Wed, 11 Oct 1995 11:28:19 GMT References: <1995Oct06.080419.4256@uu.net> <1995Oct10.041119.5048@mit.edu> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Oct10.041119.5048@mit.edu>, msato@mit.edu (Mikhail Sato) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Lucia Silva Tape trading list upon request. SASE required for international mail. From ncampbell@uu.net Fri Oct 13 05:25:19 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uu!ncampbell From: ncampbell@uu.net (Nadine Campbell) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Oct13.052519.4847@uu.net> Date: Fri, 13 Oct 1995 05:25:19 GMT References: <1995Oct06.080419.4256@uu.net> <1995Oct10.041119.5048@mit.edu> <1995Oct11.112819.5480@unam.mx> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Oct11.112819.5480@unam.mx>, lsilva@unam.mx (Lucia Silva) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Nadine Campbell Tape trading list upon request. SASE required for international mail.