From ksilva@unam.mx Sat Oct 05 06:03:34 1996 Path: ashpoly!cascade!brgate!saturno!unam!ksilva From: ksilva@unam.mx (Katrin Silva) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct05.060334.9030@unam.mx> Date: Sat, 05 Oct 1996 06:03:34 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx 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. Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Katrin Silva *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From gpopov@berkeley.edu Sun Oct 06 11:20:34 1996 Path: ashpoly!cascade!mxgate!coyoacan!berkeley!gpopov From: gpopov@berkeley.edu (Graham Popov) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct06.112034.5870@berkeley.edu> Date: Sun, 06 Oct 1996 11:20:34 GMT References: <1996Oct05.060334.9030@unam.mx> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Oct05.060334.9030@unam.mx>, ksilva@unam.mx (Katrin Silva) 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. -- Graham Popov | gpopov@berkeley.edu PGP Key fingerprint: 7968 9074 5248 4358 "Keep the channels open." From kgonzalez@stanford.edu Mon Oct 07 14:56:34 1996 Path: ashpoly!cascade!transat!ukc!fennimore!stanford!kgonzalez From: kgonzalez@stanford.edu (Kenji González) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Oct07.145634.5326@stanford.edu> Date: Mon, 07 Oct 1996 14:56:34 GMT References: <1996Oct05.060334.9030@unam.mx> <1996Oct06.112034.5870@berkeley.edu> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Oct06.112034.5870@berkeley.edu>, gpopov@berkeley.edu (Graham Popov) 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. -- Kenji González *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0