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Dual CPU help GPL ?

13 posts by 11 people · 17 May 1999 - 19 May 1999

Janwi 17 May 1999#468111
With celeron 400 chips costing $100 or so it would not be too expensive to put together a dual 400 mhz system. Would GPL benefit from this type of CPU power?
Rober 17 May 1999#468112
I might be wrong but I think Win 98 does not support dual processors. GPL would have to support NT . Maybe the upcoming patch will support NT. Wow. Imagine. Two 400 mhz processors and GPL. Great idea.
WIn98 does not support SMP, and unless the game is written with SMP multithread support, running on NT isn't going to do anything, either. One thing folks often seem to misunderstand (not saying you do) about multiprocessor systems is that they don't combine to make a faster system, they really just do more of the same thing at the same speed. In other words, two 400Mhz processors don't make an 800Mhz system any more than pouring one glass of 106F degree water into another glass of 106F degree makes the water boil. ~daxe -----------== Posted via Newsfeeds.Com, Uncensored Usenet News ==---------- http://www.newsfeeds.com The Largest Usenet Servers in the World! ------== Over 73,000 Newsgroups - Including Dedicated Binaries Servers ==-----
> I might be wrong but I think Win 98 does not support dual processors. You are correct. GPL supports NT now minus a feature 99.9% of the public would deem necessary, i.e. controller support. Just launch the PapyCPU service before running GPL. It isn't much fun to drive but it is quite useful for debugging purposes if you are inclined to do that sort of thing. Word on the street is that the upcoming patch will indeed fully support NT by adding much needed NT controller support. Additionally SMP will be directly supported by GPL although the details of which have yet to be disclosed, i.e. what runs in what thread. My only concern is the usual NT sound lag problems. Windows 2000 should take care of that though. Depends on the implementation and where the current bottlenecks are. For odd reasons I've never quite fathomed 3dfx graphics are slightly faster on NT so even the current version minus SMP support runs faster (albeit only an imperceptible amount so). - George
Janwi 18 May 1999#468362
Microstar and Soltek slot 1 converters have jumpers for dual celerons. So you need to start with a dual slot 1 MB use celeron socket 370 cpu with slot 1 converters. Jan Winkel
No, Win 98 does not support dual processors. Win NT does. And the upcoming 1.1 patch for GPL does run on NT (*). And it does run on dual processor NT systems (at least NT5, I don't think we've ever tried it on a dual processor NT4 system). And it does use both processors. I imagine it would also run on a 4 processor system, but, given the way the game is architected, it won't likely use more than two at a time. And on the class of processor that one would bother to configure a dual CPU machine with, GPL isn't often CPU bound, so there's not a huge benefit to having two of them (unless you're running without 3D acceleration). (*) NT4 w/SP3 and NT5 Beta 2. Our "Generic" joystick driver is not supported on NT. NT4 only supports DirectX 3, not DirectX 5, so controller support is further limited on NT4 to those devices that the standard Win32 "joyGetPos" function recognizes. Plain old joysticks up to 4 axes and 4 buttons should work OK. Fancy digital, serial or USB controllers are probably right out. If Microsoft ever releases DirectX 5 for NT4, such controllers should work fine (though I don't believe they have any plans to do this). Randy
Bill Mette 18 May 1999#468364
>>With celeron 400 chips costing $100 or so it would not be too expensive to put >>together a dual 400 mhz system. Would GPL benefit from this type of CPU power? >AFIK you can't use Celeron processors in a Dual CPU system. Not right >out the box, that is. You need to modify those Celeron's to get it >working. You can now. There are slockets for the PPGA Celerons that have the modification already built into them. http://www.firingsquad.com/hardware/supermicrotmr006/default.asp -- | "Instead of letting the moon be the Bill Mette | gateway to our future, we have let Enteract, Chicago | it become a brief chapter in our
Actually we tested GPL on a dual processor NT4 SP3 box and a single processor NT5 beta machine. Scott Sanford
Schlomo4 18 May 1999#468366
This could still benefit GPL tremendously provided the upcoming 1.1 patch will make GPL Win NT compatible. Its not twice the speed but its twice the calculations. In my opinion a great thing (especially if i could get a celeron 400 and a P2 300 working together.....whoo boy!!). Anyone know if thats possible...i kinda doubt it myself but i dont know beans about CPU compatibility. Chris
Unless the game is rewritten to use multithreading, the second CPU would just sit there with nothing to do. The operating system doesn't just 'decide' which threads to send where. ~daxe -----------== Posted via Newsfeeds.Com, Uncensored Usenet News ==---------- http://www.newsfeeds.com The Largest Usenet Servers in the World! ------== Over 73,000 Newsgroups - Including Dedicated Binaries Servers ==-----
Remco Moedt 18 May 1999#468368
>With celeron 400 chips costing $100 or so it would not be too expensive to put >together a dual 400 mhz system. Would GPL benefit from this type of CPU power? AFIK you can't use Celeron processors in a Dual CPU system. Not right out the box, that is. You need to modify those Celeron's to get it working. However, according to Randy Cassidy, with genuine P II or P III processors, and running NT, GPL will benefit from a Dual CPU system.... Remco
David Ewing 18 May 1999#468369
<Hi George - I'm enjoying your Voodoo3 patch, by the way. Great work.> For two processors to give you a real performance gain, the code would have to have been written with the CPU intensive work being run in concurrent threads. Not being a game / multimedia programmer, I have no idea if this is how it's done. Dave Ewing
Don Hancock 19 May 1999#468656
Not only do they have to be the same SPEED and breed (P2, Celeron, etc), but they should the EXACT same stepping if you want to avoid HORRIBLE potential problems with timing over the long run.... Therefore it's best to buy them at the same time from the SAME place. Gunner

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