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[ogr]
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Senior User
Join Date: Dec 2002
Location: Portland, OR
Status:
Offline
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I have a 233 Mhz Rev A iMac that will do ~2M stubs per second on OGR-25
I have a B&W 450 arriving Monday. Can I assume that it will do at least 2X that amount per second, given Mhz speed increase, as well as the 100Mhz bus?
Also, if I put the 800Mhz Zif upgrade in..will it then double output over the 450? Or close to it?
Thanks Mac gurus 
TIA
(Last edited by Chinasaur; Apr 12, 2003 at 09:54 PM.
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iMac - C2D, 2.8Ghz, 4GB, 320GB
MacBook - C2D, 2.4Ghz Uni, 4GB, 500GB
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Administrator  Join Date: May 2000
Location: California
Status:
Online
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I'm not an OGR expert, but dnetc clients seem to mostly ignore memory bus in favor of MHz. Altivec can multiply the production on a G4, but I'm not sure if OGR is optimized. RC5-72 is Altivec optimized but last I'd heard, OGR was not.
Guesstimates:
233 - 2.0M
450 - 3.8M
800 - 6.8M (if it's a G3 75x)
800 - 7+M (if it's a G4 745x with on-die L2)
RC5 seems to get a 4x increase from altivec. If OGR is suitable for simd acceleration, I'd expect a G4 800 to get over 20M using your scale.
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Mac Elite
Join Date: Jan 2002
Location: Mile High City
Status:
Offline
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OGR does not take advantage of simd accellerations on any platform to the same extent as RC5-72 though the latest cores seem to indicate there might be some slight optimization.
However, that being said, it is still a good project for older macs, or macs running OS-9. A quick benchmark on my PowerMac 800 w/256k L2 cache, showed 8,295,000+ for a single processor. This was under OS-X, using the latest OS-X client which is newer then the OS-9 clients.
Curious, I did something I haven't done in nearly a year. I booted into OS-9 and ran that client version and got a very nice 8,800,000+ on OGR. This seems to be on par with an Athlon Thunderbird 1100, an Intel Celeron 1300, A Pentium 4 2400 (yes you read that right, the P4's design really hurts it on this project) or a PIII 1100.
I am presuming you will be running OS-9. Should you ever upgrade to OS-X, do consider RC5-72 instead (much more bang for your buck on the G4 CPU machine), or one of the other great projects that runs on OS-X.
Good luck and have fun on OGR.
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Senior User
Join Date: Dec 2002
Location: Portland, OR
Status:
Offline
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The new B&W 450 gets 4M stubs per second. A friends G4 400 gets 5.6M per second.
I can't wait to see what the G3 800Mhz zif upgrade gets.
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iMac - C2D, 2.8Ghz, 4GB, 320GB
MacBook - C2D, 2.4Ghz Uni, 4GB, 500GB
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