From dandersson@rwth-aachen.de Wed Sep 06 00:07:34 1995 Path: ashpoly!cascade!bigsur!rwth-aachen!dandersson From: dandersson@rwth-aachen.de (Diego Andersson) Newsgroups: comp.sys.m68k Subject: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep06.000734.6095@rwth-aachen.de> Date: Wed, 06 Sep 1995 00:07:34 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 11 Benchmarking various C compilers and FPU math libraries on a Macintosh IIci (25 MHz 68030 + 68882). 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? -- Diego Andersson Hayes Optima 288 @ 33,600 bps "There are 14 nodes and only 10 countries. Count again." From rokonkwo@stanford.edu Wed Sep 06 18:51:34 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!stanford!rokonkwo From: rokonkwo@stanford.edu (Rodrigo Okonkwo) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep06.185134.8468@stanford.edu> Date: Wed, 06 Sep 1995 18:51:34 GMT References: <1995Sep06.000734.6095@rwth-aachen.de> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Sep06.000734.6095@rwth-aachen.de>, dandersson@rwth-aachen.de (Diego Andersson) 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. -- Rodrigo Okonkwo Opinions expressed are solely my own and not those of Stanford University Computer Systems Lab. ------------------------------------------------------------ From lkarlsson@pacbell.net Thu Sep 07 19:43:34 1995 Path: ashpoly!cascade!transat!ukc!fennimore!pacbell!lkarlsson From: lkarlsson@pacbell.net (Lucia Karlsson) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep07.194334.7930@pacbell.net> Date: Thu, 07 Sep 1995 19:43:34 GMT References: <1995Sep06.000734.6095@rwth-aachen.de> <1995Sep06.185134.8468@stanford.edu> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Sep06.185134.8468@stanford.edu>, rokonkwo@stanford.edu (Rodrigo Okonkwo) 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. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- === Lucia Karlsson === Dept of Electrical Engineering, Pacific Bell Internet Services "The hatch is open. Is anyone listening?" From rhughes@tum.de Fri Sep 08 21:11:34 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!tum!rhughes From: rhughes@tum.de (Renata Hughes) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep08.211134.9137@tum.de> Date: Fri, 08 Sep 1995 21:11:34 GMT References: <1995Sep06.000734.6095@rwth-aachen.de> <1995Sep06.185134.8468@stanford.edu> <1995Sep07.194334.7930@pacbell.net> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Sep07.194334.7930@pacbell.net>, lkarlsson@pacbell.net (Lucia Karlsson) writes: > The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. > Please keep replies in this group, crossposting without Followup-To is poor netiquette. The 68040 on the Quadra is a monster -- the on-chip FPU executes FFT butterflies in less than 4 milliseconds. -- Renata Hughes "When every node is whole, the channel opens." Pentium 90 (OS/2 Warp) / TOS 4.04 From hkang@tum.de Sat Sep 09 07:47:34 1995 Path: ashpoly!cascade!bigsur!tum!hkang From: hkang@tum.de (Hana Kang) Newsgroups: comp.sys.m68k Subject: Re: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995Sep09.074734.2058@tum.de> Date: Sat, 09 Sep 1995 07:47:34 GMT References: <1995Sep06.000734.6095@rwth-aachen.de> <1995Sep06.185134.8468@stanford.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Sep06.185134.8468@stanford.edu>, rokonkwo@stanford.edu (Rodrigo Okonkwo) 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. -- Hana Kang Tape trading list upon request. SASE required for international mail.