From nsouza@tum.de Tue Mar 07 02:59:04 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!tum!nsouza From: nsouza@tum.de (Nadia Souza) Newsgroups: comp.sys.m68k Subject: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar07.025904.3975@tum.de> Date: Tue, 07 Mar 1995 02:59:04 GMT Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: WinVN 0.99.5 Lines: 11 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. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Nadia Souza *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0 From rmuller@earthlink.net Wed Mar 08 18:15:04 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!earthlink!rmuller From: rmuller@earthlink.net (Rodrigo Müller) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar08.181504.4639@earthlink.net> Date: Wed, 08 Mar 1995 18:15:04 GMT References: <1995Mar07.025904.3975@tum.de> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Mar07.025904.3975@tum.de>, nsouza@tum.de (Nadia Souza) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. Top-posters will be placed in my ~/.killfile without notice. -- Rodrigo Müller | rmuller@earthlink.net PGP Key fingerprint: C7FF 793E 83B3 8AD5 "Keep the channels open." From gsouza@earthlink.net Thu Mar 09 04:12:04 1995 Path: ashpoly!cascade!bigsur!earthlink!gsouza From: gsouza@earthlink.net (Graham Souza) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar09.041204.5515@earthlink.net> Date: Thu, 09 Mar 1995 04:12:04 GMT References: <1995Mar07.025904.3975@tum.de> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Mar07.025904.3975@tum.de>, nsouza@tum.de (Nadia Souza) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Graham Souza Tape trading list upon request. SASE required for international mail. From dgarcia@tum.de Thu Mar 09 23:55:04 1995 Path: ashpoly!cascade!brgate!saturno!tum!dgarcia From: dgarcia@tum.de (Diego García) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar09.235504.1544@tum.de> Date: Thu, 09 Mar 1995 23:55:04 GMT References: <1995Mar07.025904.3975@tum.de> <1995Mar08.181504.4639@earthlink.net> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Mar08.181504.4639@earthlink.net>, rmuller@earthlink.net (Rodrigo Müller) writes: > Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. > Top-posters will be placed in my ~/.killfile without notice. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Diego García "5 sigma is a discovery. 7 is a question." Atari Falcon 030 / System 7.5.1 From nhughes@unam.mx Sat Mar 11 12:26:04 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!unam!nhughes From: nhughes@unam.mx (Natalia Hughes) Newsgroups: comp.sys.m68k Subject: Re: Question: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar11.122604.5501@unam.mx> Date: Sat, 11 Mar 1995 12:26:04 GMT References: <1995Mar07.025904.3975@tum.de> <1995Mar09.041204.5515@earthlink.net> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Mar09.041204.5515@earthlink.net>, gsouza@earthlink.net (Graham Souza) 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. -- === Natalia Hughes === Dept of Electrical Engineering, Universidad Nacional Autónoma de México (DGSCA) "The hatch is open. Is anyone listening?"