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[Collatz Conjecture] OpenCL application for Intel Ivy Bridge GPU on Windows released

post #1 of 15
Thread Starter 
SOURCE

So far, it's only for the Windows version of the solo_collatz units, a new type of work unit for the Collatz Conjecture that "uses the CPU to double check the GPU results eliminating the need for a wingman" (ie. credit is granted instantly as opposed to waiting for a someone else to finish their work unit to compare result).
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post #2 of 15
Well, it seems like it's instant even without an iGPU. Just ran one on my Xeon+7970. Did not take much CPU though.
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post #3 of 15
Thread Starter 
Quote:
Originally Posted by Starbomba View Post

Well, it seems like it's instant even without an iGPU. Just ran one on my Xeon+7970. Did not take much CPU though.

Are you sure that you got the Intel work unit? For the new solo_collatz, there's units available for Nvidia, ATi and Intel graphics.
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post #4 of 15
Quote:
Originally Posted by gamer11200 View Post

Are you sure that you got the Intel work unit? For the new solo_collatz, there's units available for Nvidia, ATi and Intel graphics.

Nope, it was only the AMD WU. From what i understood, the app threw two WU's, one for the GPU and one for the IGP, and the IGP was in charge of the validation. Seems like it's not like that.

I'm surprised it still uses so little CPU though, even if it is used for validation. Too bad i can't try the Intel WU, my HTPC's IGP doesn't get detected since the CPU is sitting on a P67 motherboard, and it's a Sandy CPU, i don't think those are compatible.
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post #5 of 15
Thread Starter 
From the way I read it, you get the GPU work unit (Intel Ivy Bridge, Nvidia, or ATi) and crunch it and the CPU does the validation.

The Intel iGPU has to be an Ivy Bridge one.
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post #6 of 15
These new solo_collatz tasks seem to have same strange behavior as Poem tasks, 7870 XT on stock 975 MHz clocks is making more PPD than a 7950 overclocked to 1000 MHz, 580k vs. 520k PPD

edit. It looks that run times depend heavily on cpu speed, 7870 XT with a stock Q9550 has average run time of 1480 seconds while similar card with overclocked i7-3770K finishes tasks in about 1300 seconds.
Edited by mm67 - 6/10/13 at 9:55pm
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post #7 of 15
Quote:
Originally Posted by mm67 View Post

These new solo_collatz tasks seem to have same strange behavior as Poem tasks, 7870 XT on stock 975 MHz clocks is making more PPD than a 7950 overclocked to 1000 MHz, 580k vs. 520k PPD

edit. It looks that run times depend heavily on cpu speed, 7870 XT with a stock Q9550 has average run time of 1480 seconds while similar card with overclocked i7-3770K finishes tasks in about 1300 seconds.

Could be a PCIe limitation?
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post #8 of 15
Quote:
Originally Posted by Finrond View Post

Could be a PCIe limitation?

Both 7950 and 7870 XT are running from PCIe 3.0 slots on Z77 boards and even 7870 XT on old P45 board with PCIe 2.0 slots seems to be faster than 7950.
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post #9 of 15
Perhaps Sapphire made a mistake and gave you a fully functional 7970 branded as a 7870? tongue.gif
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post #10 of 15
Quote:
Originally Posted by eus105454 View Post

Perhaps Sapphire made a mistake and gave you a fully functional 7970 branded as a 7870? tongue.gif

If Starbomba's numbers here are correct then 7870 XT easily beats a 7970 as well smile.gif http://www.overclock.net/t/1065650/google-spreadsheet-boinc-cpu-gpu-wu-times-points-2-27-13/0_20
Edited by mm67 - 6/11/13 at 2:09pm
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