From jlee@illinois.edu Tue Jun 18 23:59:20 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!illinois!jlee From: jlee@illinois.edu (Julien Lee) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jun18.235920.4862@illinois.edu> Date: Tue, 18 Jun 1996 23:59:20 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. 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! -- === Julien Lee === Dept of Electrical Engineering, University of Illinois Urbana-Champaign "In theory there is no difference between theory and practice." From oreyes@clari.net Wed Jun 19 05:14:20 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!clari!oreyes From: oreyes@clari.net (Olga Reyes) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jun19.051420.1968@clari.net> Date: Wed, 19 Jun 1996 05:14:20 GMT References: <1996Jun18.235920.4862@illinois.edu> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Jun18.235920.4862@illinois.edu>, jlee@illinois.edu (Julien Lee) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Olga Reyes Tape trading list upon request. SASE required for international mail. From rpopov@tum.de Fri Jun 21 05:52:20 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!tum!rpopov From: rpopov@tum.de (Renata Popov) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jun21.055220.3131@tum.de> Date: Fri, 21 Jun 1996 05:52:20 GMT References: <1996Jun18.235920.4862@illinois.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1996Jun18.235920.4862@illinois.edu>, jlee@illinois.edu (Julien Lee) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. -- Renata Popov Tape trading list upon request. SASE required for international mail. From rfournier@rwth-aachen.de Sun Jun 23 09:24:20 1996 Path: ashpoly!cascade!transat!ukc!fennimore!rwth-aachen!rfournier From: rfournier@rwth-aachen.de (Rodrigo Fournier) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jun23.092420.5763@rwth-aachen.de> Date: Sun, 23 Jun 1996 09:24:20 GMT References: <1996Jun18.235920.4862@illinois.edu> <1996Jun21.055220.3131@tum.de> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Jun21.055220.3131@tum.de>, rpopov@tum.de (Renata Popov) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Rodrigo Fournier *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0 From bmuller@panix.com Sun Jun 23 16:26:20 1996 Path: ashpoly!cascade!brgate!saturno!panix!bmuller From: bmuller@panix.com (Bill Müller) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jun23.162620.9383@panix.com> Date: Sun, 23 Jun 1996 16:26:20 GMT References: <1996Jun18.235920.4862@illinois.edu> <1996Jun21.055220.3131@tum.de> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Jun21.055220.3131@tum.de>, rpopov@tum.de (Renata Popov) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Bill Müller | bmuller@panix.com PGP Key fingerprint: 0E52 F0F1 8D8D 746D "Keep the channels open."