From mokonkwo@hanse.de Sun Nov 24 03:32:05 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!hanse!mokonkwo From: mokonkwo@hanse.de (Morag Okonkwo) Newsgroups: comp.sys.m68k Subject: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov24.033205.5731@hanse.de> Date: Sun, 24 Nov 1996 03:32:05 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. Anyone running this on a Quadra 840AV with the 68040? -- === Morag Okonkwo === Dept of Electrical Engineering, Hanse-Netzwerk Hamburg "We don't sign stars. We build them." From ookonkwo@pacbell.net Mon Nov 25 11:08:05 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!pacbell!ookonkwo From: ookonkwo@pacbell.net (Olga Okonkwo) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov25.110805.1867@pacbell.net> Date: Mon, 25 Nov 1996 11:08:05 GMT References: <1996Nov24.033205.5731@hanse.de> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1996Nov24.033205.5731@hanse.de>, mokonkwo@hanse.de (Morag Okonkwo) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Olga Okonkwo *PLONK* filter active for trolls. Sun 3/60 (SunOS 4.1.1) - NetBSD 1.0 From anakamura@mindspring.com Tue Nov 26 04:45:05 1996 Path: ashpoly!cascade!mxgate!coyoacan!mindspring!anakamura From: anakamura@mindspring.com (Andrei Nakamura) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov26.044505.8889@mindspring.com> Date: Tue, 26 Nov 1996 04:45:05 GMT References: <1996Nov24.033205.5731@hanse.de> <1996Nov25.110805.1867@pacbell.net> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Nov25.110805.1867@pacbell.net>, ookonkwo@pacbell.net (Olga Okonkwo) 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. -- Andrei Nakamura *PLONK* filter active for trolls. 486DX2/66 (Linux 1.2.13) - NetBSD 1.0 From pfischer@rwth-aachen.de Wed Nov 27 17:13:05 1996 Path: ashpoly!cascade!brgate!saturno!rwth-aachen!pfischer From: pfischer@rwth-aachen.de (Pavel Fischer) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov27.171305.9342@rwth-aachen.de> Date: Wed, 27 Nov 1996 17:13:05 GMT References: <1996Nov24.033205.5731@hanse.de> <1996Nov25.110805.1867@pacbell.net> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Nov25.110805.1867@pacbell.net>, ookonkwo@pacbell.net (Olga Okonkwo) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Pavel Fischer "Marcus is not one man." 486DX2/66 (Linux 1.2.13) / System 7.5.1 From mkang@earthlink.net Fri Nov 29 11:02:05 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!earthlink!mkang From: mkang@earthlink.net (Mike Kang) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Nov29.110205.8978@earthlink.net> Date: Fri, 29 Nov 1996 11:02:05 GMT References: <1996Nov24.033205.5731@hanse.de> <1996Nov25.110805.1867@pacbell.net> <1996Nov26.044505.8889@mindspring.com> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Nov26.044505.8889@mindspring.com>, anakamura@mindspring.com (Andrei Nakamura) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- === Mike Kang === Dept of Electrical Engineering, EarthLink Network "Hardware is temporary. The signal survives."