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Author Topic: Two HD 5870 in Linux (Debian) performing no better than one  (Read 5878 times)
LeonGeeste
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March 21, 2011, 01:19:29 PM
 #21

So how do you download ATI Stream/APP SDK 2.1 now?  I can't find it on the AMD site or on a Google search.
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March 21, 2011, 01:42:54 PM
 #22

So how do you download ATI Stream/APP SDK 2.1 now?  I can't find it on the AMD site or on a Google search.

Current link for 32bit linux:
http://developer.amd.com/Downloads/ati-stream-sdk-v2.3-lnx32.tgz

Just replace version number:
http://developer.amd.com/Downloads/ati-stream-sdk-v2.1-lnx32.tgz


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March 21, 2011, 04:46:53 PM
 #23

Wouldn't you know it, it works fine with SDK 2.1 Smiley

I'm glad to hear you got this working.  I got lucky as the fglrx version that was automatically installed from the repository was 10.9.  In m0mchil's miner thread, there is plenty of discussion that SDK 2.1 is the least problematic, so I started with that as well.

"A small body of determined spirits fired by an unquenchable faith in their mission can alter the course of history." --Gandhi
LeonGeeste
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March 21, 2011, 11:48:40 PM
 #24

So how do you download ATI Stream/APP SDK 2.1 now?  I can't find it on the AMD site or on a Google search.

Current link for 32bit linux:
http://developer.amd.com/Downloads/ati-stream-sdk-v2.3-lnx32.tgz

Just replace version number:
http://developer.amd.com/Downloads/ati-stream-sdk-v2.1-lnx32.tgz

Thanks, dbitcoin!  Now, why didn't I think of that...
teknohog
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March 22, 2011, 04:31:46 PM
 #25

Wouldn't you know it, it works fine with SDK 2.1 Smiley

I used to have the same problem, and SDK 2.1 does indeed fix it Smiley The driver version is 10.12 as it is the latest that works on Gentoo, with Linux kernel 2.6.37.4.

I guess I was reluctant to try this SDK, since 2.2 worked much better with HD5570 (also using an older version of poclbm), but a few Mhash/s is not a bad price for getting the full setup to work.

As a nice bonus, CPU load is way down. With SDK 2.2, each miner consumed 100% CPU, but now it is barely noticeable.

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March 22, 2011, 04:40:49 PM
 #26

As a nice bonus, CPU load is way down. With SDK 2.2, each miner consumed 100% CPU, but now it is barely noticeable.
Yeah I noticed that as well. Perhaps the two are related.

Hopefully these issues will be fixed in SDK 2.4, which shouldn't be too far out if they keep the same release pace. I know these issues (multi-gpu on linux and high CPU use) have been brought up at the AMD forums, so let's hope they got it fixed and we don't have to wait for SDK 2.5.
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