From lpark@panix.com Mon Apr 22 23:36:14 1996 Path: ashpoly!cascade!bigsur!panix!lpark From: lpark@panix.com (Lisa Park) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr22.233614.2115@panix.com> Date: Mon, 22 Apr 1996 23:36:14 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. 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! -- Lisa Park | lpark@panix.com PGP Key fingerprint: CD43 0703 01B2 EB9E "Keep the channels open." From rdubois@rwth-aachen.de Wed Apr 24 19:18:14 1996 Path: ashpoly!cascade!bigsur!rwth-aachen!rdubois From: rdubois@rwth-aachen.de (Raj Dubois) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr24.191814.2656@rwth-aachen.de> Date: Wed, 24 Apr 1996 19:18:14 GMT References: <1996Apr22.233614.2115@panix.com> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 12 In article <1996Apr22.233614.2115@panix.com>, lpark@panix.com (Lisa Park) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Raj Dubois Zyxel U-1496E @ ISDN 64k bps "Extraordinary claims require extraordinary spectra." From hgarcia@tum.de Thu Apr 25 19:10:14 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!tum!hgarcia From: hgarcia@tum.de (Hana García) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr25.191014.1094@tum.de> Date: Thu, 25 Apr 1996 19:10:14 GMT References: <1996Apr22.233614.2115@panix.com> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1996Apr22.233614.2115@panix.com>, lpark@panix.com (Lisa Park) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Hana García Tape trading list upon request. SASE required for international mail. From ljohansson@netcom.com Fri Apr 26 14:23:14 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!netcom!ljohansson From: ljohansson@netcom.com (Lucia Johansson) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Apr26.142314.6865@netcom.com> Date: Fri, 26 Apr 1996 14:23:14 GMT References: <1996Apr22.233614.2115@panix.com> <1996Apr25.191014.1094@tum.de> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Apr25.191014.1094@tum.de>, hgarcia@tum.de (Hana García) 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. -- Lucia Johansson Opinions expressed are solely my own and not those of NETCOM On-Line Communication Services. ------------------------------------------------------------