From rcampbell@mindspring.com Fri Jul 26 03:15:54 1996 Path: ashpoly!cascade!brgate!saturno!mindspring!rcampbell From: rcampbell@mindspring.com (Rodrigo Campbell) Newsgroups: comp.sys.m68k Subject: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul26.031554.3976@mindspring.com> Date: Fri, 26 Jul 1996 03:15:54 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: TIN [version 1.2 PL2] Lines: 11 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. Total execution time for a 20-minute audio track dropped from 48 minutes to 6.2 minutes. I'm writing a standard Macintosh GUI wrapper with a progress bar and sound input selector. -- Rodrigo Campbell "Tape doesn't lie at 02:14. Ears do." NeXTstation Turbo Color / NEXTSTEP 3.3 From jkuznetsov@tum.de Sat Jul 27 14:09:54 1996 Path: ashpoly!cascade!mxgate!coyoacan!tum!jkuznetsov From: jkuznetsov@tum.de (Jens Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul27.140954.8424@tum.de> Date: Sat, 27 Jul 1996 14:09:54 GMT References: <1996Jul26.031554.3976@mindspring.com> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 12 In article <1996Jul26.031554.3976@mindspring.com>, rcampbell@mindspring.com (Rodrigo Campbell) 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. 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! -- Jens Kuznetsov US Robotics Courier V.34 @ 9600 Telebit bps "Row 14. No joke." From thernandez@inria.fr Sun Jul 28 06:17:54 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!inria!thernandez From: thernandez@inria.fr (Takeshi Hernández) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul28.061754.5268@inria.fr> Date: Sun, 28 Jul 1996 06:17:54 GMT References: <1996Jul26.031554.3976@mindspring.com> <1996Jul27.140954.8424@tum.de> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Jul27.140954.8424@tum.de>, jkuznetsov@tum.de (Jens Kuznetsov) writes: > 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! The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Takeshi Hernández Tape trading list upon request. SASE required for international mail. From oandersson@earthlink.net Tue Jul 30 07:48:54 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!earthlink!oandersson From: oandersson@earthlink.net (Olga Andersson) Newsgroups: comp.sys.m68k Subject: Re: Data: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1996Jul30.074854.7711@earthlink.net> Date: Tue, 30 Jul 1996 07:48:54 GMT References: <1996Jul26.031554.3976@mindspring.com> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Jul26.031554.3976@mindspring.com>, rcampbell@mindspring.com (Rodrigo Campbell) 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. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Olga Andersson "We don't sign stars. We build them." Acorn RiscPC 600 / SunOS 4.1.4