HD7770 & HD7750 mining thread - page 4.

e21

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Quote from: Isepick on February 16, 2012, 09:37:04 PM

We bought ckolivas (the guy who does cgminer) a 7970 specifically so he could tune cgminer for the GCN architecture. He has been working on a kernel and helping Diapolo integrate his kernel into cgminer. I get my 7750 tomorrow, I'll post my results here, though I may do a detailed review thread as well.

7770 seems fairly different from 7970 though.. BFI_INT does not appear to be supported for one, and most kernels now have it enabled by default; I will try cgminer after I make something to eat Grin

EDIT: BFI_INT does work with 2.6 SDK bundled with 12.2 preview drivers, doesn't help much though.. Diablo started up but didn't start hashing.. maybe is was user error though, never used that before.. cgminer didn't start either but that was also probably me Huh

Isepick

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We bought ckolivas (the guy who does cgminer) a 7970 specifically so he could tune cgminer for the GCN architecture. He has been working on a kernel and helping Diapolo integrate his kernel into cgminer. I get my 7750 tomorrow, I'll post my results here, though I may do a detailed review thread as well.

e21

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Quote from: ?? on ??

Quote from: e21 on February 16, 2012, 09:14:33 PM

Anyone tried Diablo or cgminer yet? Supposedly they have built in support for GCN, although I haven't tried them yet

IMO you should be trying diablo and cgminer first.

Going to try them next; never used them before so I was trying to avoid them.. Dont need all the fancy overclocking and fan options cgminer has, and I don't like the idea of a Java miner..

EDIT: I made a mistake on my original post, I was actually running at 1100MHz when I got the origonal MH/s rate.. It's actually less at stock Angry

only 131MH/s with Phoenix 1.7, and 149 MH/s Phoenix 2.0 when using the opencl kernel for some odd reason.. only good news is GPU is on auto fan and only 55*C at 1100MHz

e21

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Activity: 105

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149 MH/s at stock speed now: Phoenix 2.0 rc1, autoconfigure = enabled, VECTORS = true, BFI_INT = disabled, DiakGCN doesn't seem to work with Phoenix 2 atm

NOTE: autoconfigure slects opencl as the kernel, not phatk2. Not sure if this means anything to anyone since I get higher MH/s using this kernel, also I thought that kernel was only for use with CPUs.. strange I get higher MH/s with it..

Anyone tried Diablo or cgminer yet? Supposedly they have built in support for GCN, although I haven't tried them yet

e21

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Activity: 105

Merit: 10

So I figured I'd start an official mining thread for the Hd 77xx series..

Just got my first 7770 today, and I must say I'm less than impressed.. BFI_INT doesn't seem to be supported, as any miner that has it enabled, default or otherwise will just exit.

So far I have tried the DiakGCN kernel for Phoenix, as well as phatk and phatk2, tried using phoenix 1.7.4 (about to try with 2.0 rc1) and I get 131MH/s at 1000MHz, 9 aggression, vectors (just VECTORS, 2, 4 or 8 decrease performance), and worksize 128 (256 decreases slightly, and 64 makes no difference)

Using 12.2 drivers for 7700 series, SDK 2.6 (started at 2.5, read that 2.6 was better for GCN so I upgraded and it made no difference [fortunately it didn't seem to decrease my hash rate on my 6950, maybe due to the 12.2 drivers]) and Windows 7 64bit

Anybody who is able to get over 131.5MH/s at 1000MHz clock speed, PLEASE post all your specs, including miner, and the parameters fed to it.

Topic: HD7770 & HD7750 mining thread - page 4. (Read 49986 times)