From asantos@titech.ac.jp Tue Mar 14 13:14:41 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!titech!asantos From: asantos@titech.ac.jp (Amy Santos) Newsgroups: comp.sys.m68k Subject: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar14.131441.6016@titech.ac.jp> Date: Tue, 14 Mar 1995 13:14:41 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: Netscape 1.1N Lines: 10 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. Anyone running this on a Quadra 840AV with the 68040? -- Amy Santos -- Tokyo Institute of Technology Computer Centre "Hold for relay." From imuller@mindspring.com Wed Mar 15 21:50:41 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mindspring!imuller From: imuller@mindspring.com (Ines Müller) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar15.215041.3134@mindspring.com> Date: Wed, 15 Mar 1995 21:50:41 GMT References: <1995Mar14.131441.6016@titech.ac.jp> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Mar14.131441.6016@titech.ac.jp>, asantos@titech.ac.jp (Amy Santos) 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. -- Ines Müller -- MindSpring Enterprises "Do not worship the copy." From akang@delphi.com Fri Mar 17 23:10:41 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!delphi!akang From: akang@delphi.com (Astrid Kang) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar17.231041.4384@delphi.com> Date: Fri, 17 Mar 1995 23:10:41 GMT References: <1995Mar14.131441.6016@titech.ac.jp> <1995Mar15.215041.3134@mindspring.com> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Mar15.215041.3134@mindspring.com>, imuller@mindspring.com (Ines Müller) 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. -- Astrid Kang Tape trading list upon request. SASE required for international mail. From pramirez@berkeley.edu Sat Mar 18 15:30:41 1995 Path: ashpoly!cascade!brgate!saturno!berkeley!pramirez From: pramirez@berkeley.edu (Pavel Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar18.153041.1574@berkeley.edu> Date: Sat, 18 Mar 1995 15:30:41 GMT References: <1995Mar14.131441.6016@titech.ac.jp> <1995Mar15.215041.3134@mindspring.com> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Mar15.215041.3134@mindspring.com>, imuller@mindspring.com (Ines Müller) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- === Pavel Ramírez === Dept of Electrical Engineering, UC Berkeley Department of EECS "Hold for relay." From mkim@berkeley.edu Sat Mar 18 22:56:41 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!berkeley!mkim From: mkim@berkeley.edu (Mateo Kim) Newsgroups: comp.sys.m68k Subject: Re: Observation: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Mar18.225641.1045@berkeley.edu> Date: Sat, 18 Mar 1995 22:56:41 GMT References: <1995Mar14.131441.6016@titech.ac.jp> <1995Mar15.215041.3134@mindspring.com> <1995Mar18.153041.1574@berkeley.edu> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Mar18.153041.1574@berkeley.edu>, pramirez@berkeley.edu (Pavel Ramírez) 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. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Mateo Kim Opinions expressed are solely my own and not those of UC Berkeley Department of EECS. ------------------------------------------------------------