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Old 09-23-2006, 08:39 PM
figment figment is offline
Join Date: Oct 2005
Location: Ohio
Posts: 74
Default Problems with AMD Dual Core?....check this out.

I'm running an AMD FX64 X2 4400+ processor on win XP Pro SP2. I am also running Pro Tools 6.7r2 with a digi 002. I was experiencing H/W Buffer size errors during playback or recording, as well as choppy playback of my keyboard when I was sending it through an aux input track I routed to my studio monitors. I spent hours and hours digging through these forums. I am summarizing it all in one shot, so I hope this helps anybody else experiencing similar problems.

I basically gathered all of these potential fixes, and installed them all, before I Launched pro tools again. So, I don't know which ones actually helped, but at least one of them solved the problem. Here are the fixes I did:

1. First of all, XP was initially designed for single core processors. Service Pack 2 contained fixes to have the operating system at least work with dual cores, but not as effectively as possible. Follow this link, which will take you to a site where you can learn more about the "XP Dual Core Hotfix" and download the necessary file. I suggest you muscle through all the reading. This was probably the trickiest and most elaborate fix I found, but it wasn't that bad. After you install the fix, you will need to do a little registry editing. If you're not a complete moron, you will not have to reinstall your operating system. (Heck, even I was able to live through it, haha. Anyways, here's the link. http://www.amdzone.com/modules.php?o...ticle&sid=3964

2. Go to the AMD website where you will find a number of different free downloads to improve your system's performance. (I'm not providing a link for it, I think you'll be able to find AMD's site).

2a. First of all, get the AMD Drivers. This allows the system to automatically adjust the CPU speed, voltage and power combination that match the instantaneous user performance need. (I think it's safe to assume that this would be a good thing).

2b. The next thing you'll want to do, is get the AMD Dual Core Optimizer, which will help to keep the TSC's (Time Stamp Counters) synced up. Basically, it should improve video performance if nothing else.

2c. AMD CPU info (?Optional?). This is just a program that will tell you all about your processor(s). It goes into a little bit more depth than sandra lite from sisoft, but i thought it was nice information to know. Probably won't solve any problems, though...

2d. Power Monitor & Clock Utility (?Optional?). These are little utilities used to monitor the current frequency, voltage, utilization, and power savings of each core of each processor in a system. This application also has a system tray icon that can be used to view and select power schemes on the system. The system tray icon will show the average utilization of every core on the system. Again...these probably won't fix anything, but I was glad I came across them. They look kinda cool, and don't hog up a lot of memory. Be nice to them, and give them a try. If you don't like them, trash em'.

3. The next thing you'll want to do, is get rid of the "usepmtimer" that gets added to your boot.ini file, after you install the AMD Drivers. I think this one may have been one the more important fixes, here. Follow this link, which will tell you a little more about it, and how to get rid of it. http://duc.digidesign.com/showthread...=&sb=5&o=&vc=1

4. Lastly, would be something that may be optional, but may also save the day. Maybe not TODAY, but possibly TOMORROW, or the next day. It has to do with Processor Scheduling. Taskassign is a utility, which enables you to allocate which programs you want to run on certain processor cores. For example, you can have some system utilities run on core 0, and more important programs run on core 1. It will allow you to browse to programs, and select which core to run on. Also, i think it gave me another option to do it from the processes tab in the task manager by right clicking on a process, which I never remember seeing before.

http://duc.digidesign.com/showflat.p...0224&Forum=f32,f46&Words=9093&Searchpage=0&Limit=25&Main=1050071 &Search=true&where=bodysub&Name=&daterange=1&newer val=1&newertype=w&olderval=&oldertype=&bodyprev=#P ost1050224

I never did anything with the Taskassign utility, before I started up pro Tools, and found that the problems concerning hardware buffer errors and choppy keyboard playback had disappeared. I was extremely excited, and immediately tried to record something from my keyboard. Wouldn't you know it...now I need to fuss with the routing of my midi track. (One problem to the next...)
Digi002/ PTLE 7.3.1cs3/ XP Pro SP2/ Dual Core AMD Athlon 4400+ 2.2GHz 64 bit/ D-FI 939 board/ NVIDIA nForce4 Chipset/ 2GB DDR RAM/ Yamaha Motif ES88
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