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Lucko (OP)
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April 30, 2013, 11:10:59 AM |
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Hi!
I have Windows 7 x64
ATI 7870 was ruining about 440 but then my employee drooped HDD when he decided that he needs to move miner... Now after I have reinstall on a new disk I only get 350. I can remember or find a combination of drivers and SDK that would give me the performance back. Any Idea?
CG miner and I didn't forget to delete phatk121016Pitcairnv1w256l4.bin
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Lucko (OP)
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April 30, 2013, 01:32:38 PM |
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So is 5870 same as 7870? Is that what you are saying... As far as I understand you cant you SDK below 2.6 for 7xxx but you can for 5xxx... |
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theowalpott
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Activity: 80
Merit: 10
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April 30, 2013, 01:47:14 PM |
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I've got both a 7870 and a 7870XT running on 2 different linux systems. with cgminer (2.11.4) (diablo kernel) or poclbm I get ~420 MH/s @ 1100core/950 mem on the 7870. CGMiner settings are worksize 128 and intensity 12 with 2 threads. Cat 13.1 and SDK 2.8 on ubuntu 12.04 32bit. with poclbm I get ~500MH/s @ 1100core/950mem on the 7870XT. Poclbm settings are -w128 -f10 (cgminer seemed to crash a lot more than poclbm on the system I have it in). Cat 12.11 and SDK 2.8 on ubuntu 12.10 64 bit. I found a drop in hashrate when using the 13.3 beta drivers, although I've not tried the 13.4 driver. I also found that the phatk kernel performed worse on both. Hope that helps  |
1FwGATm6eU5dSiTp2rpazV5u3qwbx1fuDn
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Lucko (OP)
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April 30, 2013, 02:12:46 PM |
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I've got both a 7870 and a 7870XT running on 2 different linux systems. with cgminer (2.11.4) (diablo kernel) or poclbm I get ~420 MH/s @ 1100core/950 mem on the 7870. CGMiner settings are worksize 128 and intensity 12 with 2 threads. Cat 13.1 and SDK 2.8 on ubuntu 12.04 32bit. with poclbm I get ~500MH/s @ 1100core/950mem on the 7870XT. Poclbm settings are -w128 -f10 (cgminer seemed to crash a lot more than poclbm on the system I have it in). Cat 12.11 and SDK 2.8 on ubuntu 12.10 64 bit. I found a drop in hashrate when using the 13.3 beta drivers, although I've not tried the 13.4 driver. I also found that the phatk kernel performed worse on both. Hope that helps It helps to see that even 440 wasn't enough... I have 1250 core so I should be getting even more then 500... but then again you are using Linux... So Linux might be a way... But what about Windows. I know there must be something with SDK and Cat combination but I can't remember... |
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theowalpott
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April 30, 2013, 03:33:08 PM |
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I'd estimate you'd get ~465MH/s @ 1250 core, based on me getting ~375MH/s at stock (GHz edition). Note the 7870XT has 1536 cores compared to 1280 in the 7870. I've never tried mining in windows, so I can't help much - sorry.
I'd concentrate on your choice of mining kernel (I find diablo and poclbm to be the best) and stick with the 13.1 cats. AFAIK the SDK is built into the latest drivers so you shouldnt need to install it separately unless you want to use a different version.
Maybe you should do a clean install of the AMD drivers (use driver sweeper in safe mode after uninstalling for example), don't reinstall the APP SDK and test the parameters with diablo and pocblem miners. You could also try disabling the windows7 aero stuff.
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1FwGATm6eU5dSiTp2rpazV5u3qwbx1fuDn
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Lucko (OP)
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April 30, 2013, 03:44:43 PM |
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I'd estimate you'd get ~465MH/s @ 1250 core, based on me getting ~375MH/s at stock (GHz edition). Note the 7870XT has 1536 cores compared to 1280 in the 7870. I've never tried mining in windows, so I can't help much - sorry.
I'd concentrate on your choice of mining kernel (I find diablo and poclbm to be the best) and stick with the 13.1 cats. AFAIK the SDK is built into the latest drivers so you shouldnt need to install it separately unless you want to use a different version.
Maybe you should do a clean install of the AMD drivers (use driver sweeper in safe mode after uninstalling for example), don't reinstall the APP SDK and test the parameters with diablo and pocblem miners. You could also try disabling the windows7 aero stuff.
I remember installing drivers and SDK separably because combo didn't get me over 400... But I can't remember what was the combination... No AERO... EDIT: And I don't have XT but GHz. So XT is higher because of more cores... |
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Lucko (OP)
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April 30, 2013, 04:36:47 PM |
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13.1 cats crashes cgminer... And I can't figure out why...
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theowalpott
Member
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Activity: 80
Merit: 10
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April 30, 2013, 04:51:29 PM |
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Last few suggestions I have.. use APP SDK 2.6 or 2.7 - they are apparently the best for 7xxx cards, although I've not noticed any problems with 2.8. Only other thing I can think of is the version of pyopencl? - possible an older version is faster for some reason?
Again, I'm using a fairly recent version (updated within the last month or 2) of pyopencl.. so not sure how much that helps you!
Finally, try 12.8 or 12.11 cats, from memory people had success with those.. I'm just going on forum posts and things I remember though, as I've never really experienced many problems using linux.
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1FwGATm6eU5dSiTp2rpazV5u3qwbx1fuDn
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Lucko (OP)
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April 30, 2013, 05:47:03 PM |
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Well from what I can figure out there must be cgminer issue... I have install guiminer ang got 453 out so... It looks like I don't know what I have to delete to reset openCL... Any help...
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Lucko (OP)
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April 30, 2013, 07:57:26 PM |
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Figure it out... I had to add -k poclbm and it works even better then it was... Looks like I found a better SDK and driver combination in the last one 13.4... But that means that cgminer in auto mode didn't used best kernel... Not sure why |
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