From rlopez@netcom.com Mon Jan 24 21:28:12 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!netcom!rlopez From: rlopez@netcom.com (Renata López) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jan24.212812.1273@netcom.com> Date: Mon, 24 Jan 1994 21:28:12 GMT Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. 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? -- Renata López Tape trading list upon request. SASE required for international mail. From jcampbell@clari.net Wed Jan 26 04:10:12 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!clari!jcampbell From: jcampbell@clari.net (Ji-woo Campbell) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jan26.041012.6747@clari.net> Date: Wed, 26 Jan 1994 04:10:12 GMT References: <1994Jan24.212812.1273@netcom.com> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Jan24.212812.1273@netcom.com>, rlopez@netcom.com (Renata López) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Ji-woo Campbell Tape trading list upon request. SASE required for international mail. From jokonkwo@uu.net Thu Jan 27 00:29:12 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uu!jokonkwo From: jokonkwo@uu.net (Jens Okonkwo) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jan27.002912.8297@uu.net> Date: Thu, 27 Jan 1994 00:29:12 GMT References: <1994Jan24.212812.1273@netcom.com> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1994Jan24.212812.1273@netcom.com>, rlopez@netcom.com (Renata López) 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. -- Jens Okonkwo Tape trading list upon request. SASE required for international mail. From rpopov@panix.com Thu Jan 27 19:13:12 1994 Path: ashpoly!cascade!brgate!saturno!panix!rpopov From: rpopov@panix.com (Renata Popov) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jan27.191312.6477@panix.com> Date: Thu, 27 Jan 1994 19:13:12 GMT References: <1994Jan24.212812.1273@netcom.com> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Jan24.212812.1273@netcom.com>, rlopez@netcom.com (Renata López) writes: > Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). > Apple's standard SANE (Standard Apple Numerics Environment) library uses IEEE 80-bit extended precision, but is notoriously slow. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Renata Popov -- Public Access Unix of New York "Hardware is temporary. The signal survives." From dpopov@netcom.com Sat Jan 29 21:47:12 1994 Path: ashpoly!cascade!bigsur!netcom!dpopov From: dpopov@netcom.com (Dong-hyun Popov) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1994Jan29.214712.6220@netcom.com> Date: Sat, 29 Jan 1994 21:47:12 GMT References: <1994Jan24.212812.1273@netcom.com> <1994Jan27.191312.6477@panix.com> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jan27.191312.6477@panix.com>, rpopov@panix.com (Renata Popov) writes: > Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Dong-hyun Popov | dpopov@netcom.com PGP Key fingerprint: E297 FBB8 69C5 7B6A "Keep the channels open."