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Old 2003-08-14, 21:33   #1
Uncwilly
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Default System tweaks to speed GIMPS

I have seen that lowering the demands by the display can add speed to Prime95. I personally have seen no improvement, but then that may be my hardware/software config.

What I am wondering is: Does anyone have tweaks to their OS (Win9x inparticular) that have held with the speed the Prime95 runs on their machine?

One that I have done for my machine is to shorten the time until it shuts down the screen. This returns the machine to the fastest speed as quick as possible. I was away from my machine over night and it had stayed with the screen on and the per iteration time went from .176 to about .201 that was just from leaving the screen active.
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Old 2003-08-14, 23:26   #2
nitro
 
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Default Re: System tweaks to speed GIMPS

Quote:
Originally Posted by Uncwilly
I have seen that lowering the demands by the display can add speed to Prime95. I personally have seen no improvement, but then that may be my hardware/software config.

What I am wondering is: Does anyone have tweaks to their OS (Win9x inparticular) that have held with the speed the Prime95 runs on their machine?

[snip]

How about ditching any version of Windoze 9X for a start?
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Old 2003-08-14, 23:36   #3
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I know that Win2K is faster than Win98SE, but the video only makes a difference if the CPU is used to draw the screen. You might try upgrading your vid card.

Also, if you have onboard video, I recommend to turn it off and use a separate vid card.

Check you Bios settings for memory tweaks to speed things up.

And make sure that M$ Office isn't running "Fast Find" in the background.
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Old 2003-08-15, 00:29   #4
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I used msconfig and removed alot of background programs that weren't needed ( using 98SE ).

I Use ATM 2.2 ( Another Task Manager )
and set the Priority Class of Prime95.exe (Process) to High
and the 2 threads to 14 ( Above Normal ).

My PC (Athlon 1.2 Ghz) is fast enough that the OS still gets it's time slices.
On a slower machine the thread that does most of the processing should be set lower ( 11 lowest ) or set the Process to Normal.

I do this ( Process to High ) if I'm not going to use the PC for an extended amount of time.

If you want more RAM to be available to programs use a smaller amount for the vcache entry in SYSTEM.INI

[vcache]
MinFileCache=4096
MaxFileCache=24576
ChunkSize=512
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Old 2003-08-15, 02:15   #5
Rastus
 
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How do you get rid of Fast Find?
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Old 2003-08-15, 02:26   #6
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http://support.microsoft.com/default.aspx?scid=http://support.microsoft.com:80/support/kb/articles/q158/7/05.asp&NoWebContent=1
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Old 2003-08-15, 02:53   #7
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Use msconfig and uncheck it.

Or take it's link out of the Startup Folder.

The findfast index files in 97 are ffast*.ff* ( delete them )

The recommend way is the instructions in the microsoft knowledge base that Xyzzy provided a link to.
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Old 2003-08-15, 13:48   #8
Uncwilly
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MS Office

I have tried turning off system sounds, that does not improve the per iteration time when the system is idle.

Any win components or other common programs that can be pitched?
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Old 2003-08-15, 14:31   #9
dsouza123
 
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Disabled items

taskmon.exe Task Monitor
mstask.exe Scheduling Agent ( needed if scheduled items run )

Use msconfig.exe on the Startup Tab to check what programs load at startup.

If you have MSWorks on your PC, there are a few works related programs that can be disabled. ( Works continues to work fine )

Some of the Real programs are resource and CPU cycle wasters.

The PC of someone I have helped had both on and the PC ( Celeron 1 Ghz 256 MB) was lagging, after disabling both the PC was very responsive.
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Old 2003-08-18, 02:34   #10
QuintLeo
 
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If you have a screen saver enabled, disable it or switch to the "blank screen" screensaver. ALL other screensavers eat CPU cycles while they are running.

Remove any "quick start" stuff - that stuff eats RAM and a few CPU cycles.


As far as the actual OS overhead, Win9x isn't all THAT bad - I see less than a 1% iteration time difference on same hardware between 95 OSR2.1, 98SE, and LINUX command line (no X-Windows even installed) unless I'm actually DOING stuff on the machine in question.
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Old 2003-08-18, 05:49   #11
RMAC9.5
 
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My best performance on Windows 98 occurs when I run Prime 95 in Safe mode. Since Windows 98 loads a minimum set of drivers, Prime 95 is almost the only thing running on the CPU.
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