From smacdonald@mindspring.com Wed Aug 16 05:14:17 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mindspring!smacdonald From: smacdonald@mindspring.com (Sven MacDonald) Newsgroups: comp.sys.m68k Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug16.051417.5517@mindspring.com> Date: Wed, 16 Aug 1995 05:14:17 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N 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. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Sven MacDonald "Marcus is not one man." Mac IIci / 68882 FPU / TOS 4.04 From mramirez@tum.de Thu Aug 17 14:37:17 1995 Path: ashpoly!cascade!mxgate!coyoacan!tum!mramirez From: mramirez@tum.de (Mathieu Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug17.143717.8331@tum.de> Date: Thu, 17 Aug 1995 14:37:17 GMT References: <1995Aug16.051417.5517@mindspring.com> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Aug16.051417.5517@mindspring.com>, smacdonald@mindspring.com (Sven MacDonald) 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. If you are posting from AOL, please read RFC 1036 before posting again. -- Mathieu Ramírez *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From jmartinez@hanse.de Fri Aug 18 08:31:17 1995 Path: ashpoly!cascade!transat!ukc!fennimore!hanse!jmartinez From: jmartinez@hanse.de (Jen Martínez) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Aug18.083117.7624@hanse.de> Date: Fri, 18 Aug 1995 08:31:17 GMT References: <1995Aug16.051417.5517@mindspring.com> <1995Aug17.143717.8331@tum.de> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Aug17.143717.8331@tum.de>, mramirez@tum.de (Mathieu Ramírez) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. > If you are posting from AOL, please read RFC 1036 before posting again. Beware of System 7.5.1 memory leaks if you allocate large sample buffers in the application heap. Use NewPtrSys instead. If you are posting from AOL, please read RFC 1036 before posting again. -- Jen Martínez -- Hanse-Netzwerk Hamburg "When every node is whole, the channel opens."