Posts by Dylan
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1) Message boards : Number crunching : How to: reduce CPU usage while running on Intel GPU (Message 17488)
Posted 1590 days ago by Dylan
There are quite a few OpenCL compatible Intel GPU's. Any Intel HD 4000 and up is compatible. Ivy Bridge (anything with 3 in front) has the Intel HD 4000, while Haswell (with the 4) has the Intel HD 4600\4400 as the standard desktop integrated GPU, while some laptops come with the even more powerful HD 5xxx.

If you just need any chip to test on, then you will need to look at Ivy Bridge, but if you want to look at the more powerful GPU's, you need to get Haswell.

For Ivy, the cheapest I could find was the Intel® Core™ i3-3225 Processor with the HD 4000 GPU.
http://ark.intel.com/products/65692/Intel-Core-i3-3225-Processor-3M-Cache-3_30-GHz

For Haswell, the cheapest was the Intel® Core™ i3-4130 Processor with the Intel HD 4400 GPU.
http://ark.intel.com/products/77480/Intel-Core-i3-4130-Processor-3M-Cache-3_40-GHz

Also, the cheapest Haswell with the HD 4600 GPU was the Intel® Core™ i3-4330 Processor
http://ark.intel.com/products/77769/Intel-Core-i3-4330-Processor-4M-Cache-3_50-GHz

Hope this helps, and feel free to ask more questions.
2) Message boards : Number crunching : Crunching with an Intel GPU? (Message 17027)
Posted 1662 days ago by Dylan
Alright. I agree that 1.35 seems like a lot, so I lowered it to 1.30 and turned the clock down to 1500 Mhz. I am testing now to see if it's stable. I'd rather had a iGPU that can crunch for 5 years than one that can crunch faster but only for 3 years.
3) Message boards : Number crunching : Crunching with an Intel GPU? (Message 17017)
Posted 1662 days ago by Dylan
I test stability by crunching on this project overnight. To my knowledge, the GPU is unstable if the speed has dropped to idle speeds even though a WU is in progress.

Right now I am running at the highest clock I have found to be stable, which is 1550 mhz at 1.350 voltage. I didn't really find the perfect voltage, but I'm pretty sure it's in the ballpark as to what can keep 1550 mhz stable.

This voltage does have me a bit worried, though, because it seems high.
4) Message boards : Number crunching : Crunching with an Intel GPU? (Message 16803)
Posted 1680 days ago by Dylan
Looking good so far. Have you pushed beyond 1350mhz?
5) Message boards : Number crunching : Crunching with an Intel GPU? (Message 16770)
Posted 1684 days ago by Dylan
Anyone have any luck overclocking the Intel HD 4000? I got it to what is stable so far at 1550mhz with 1.330 voltage.
6) Message boards : Number crunching : Unsolved to Unsolvable? (Message 16666)
Posted 1693 days ago by Dylan
Perhaps, but at least we can say we tried to find a solution. Even if this project doesn't bring a solution to the Collatz Conjecture, it still brought valuable experience and knowledge under computer science, and particularly GPU computing and distributed computing.
7) Message boards : News : Intel GPUs Supported (Message 16654)
Posted 1695 days ago by Dylan
I just now tried this.

The good part: I wasn't sent any CPU or Nvidia/AMD GPU tasks.

The bad part: I wasn't sent any Intel GPU tasks.

This is what I get:

5/29/2013 3:38:38 PM | Collatz Conjecture | Scheduler request completed: got 0 new tasks

5/29/2013 3:38:38 PM | Collatz Conjecture | No tasks sent

5/29/2013 3:38:38 PM | Collatz Conjecture | Tasks for CPU are available, but your preferences are set to not accept them

5/29/2013 3:38:38 PM | Collatz Conjecture | Tasks for NVIDIA GPU are available, but your preferences are set to not accept them

5/29/2013 3:38:38 PM | Collatz Conjecture | Tasks for AMD/ATI GPU are available, but your preferences are set to not accept them


Also, when manually updating:


5/29/2013 3:38:54 PM | Collatz Conjecture | update requested by user

5/29/2013 3:38:59 PM | Collatz Conjecture | Sending scheduler request: Requested by user.

5/29/2013 3:38:59 PM | Collatz Conjecture | Not requesting tasks: project is not highest priority

5/29/2013 3:39:01 PM | Collatz Conjecture | Scheduler request completed
8) Message boards : News : Intel GPUs Supported (Message 16638)
Posted 1695 days ago by Dylan
This is great. However, I have a question. How can I set up one of my computers to run Collatz tasks on the HD 4000, but also allow the GTX 670 to continue crunching another project (GPUGRID)?

Is it not easily done, due to the limitations of Boinc?




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