Ninjastic
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Board CPU/GPU Bitcoin mining hardware
Re: Official DiabloMiner GPU Miner Thread (now with Long Poll and BFI_INT support)
by
jedi95
on 15/05/2011, 07:39:10 UTC
Quote from: DiabloD3 on May 15, 2011, 07:19:08 AM
Quote from: Strom on May 14, 2011, 05:11:40 PM
Quote from: DiabloD3 on May 14, 2011, 04:27:42 PM
Update: BFI_INT support.

I now have the fastest miner known to man.

On my Radeon 5850 @ 765 /w SDK 2.1

Phoenix DEVICE=1 VECTORS WORKSIZE=128 BFI_INT AGGRESSION=5, 7, 11, 13, with or without FASTLOOP = 273

poclbm -v -w 128 -f 60 = 292

DiabloMiner -v 2 -w 128 -f 60 = 302
I don't think so Tim.

On my Radeon 5850 @ 725 /w SDK 2.4 on Win7 x64

DiabloMiner -v 2 -w 128 -f 60 254 MHash/s
DiabloMiner -v 2 -w 128 -f 1 270 MHash/s
Phoenix 1.47 -k phatk DEVICE=0 VECTORS WORKSIZE=128 BFI_INT AGGRESSION=12 282 MHash/s

I haven't found the optimum settings for 2.4 yet. Try playing with the settings and see if you can get higher numbers. Every machine is different.

I don't think any combination of -v -w and -f is going to make up that difference in speed. The .cl itself needs to be modified to maximize ALU usage on SDK 2.4. This is what the phatk kernel does. (1418 vs 1484 ALU ops) (for reference poclbm on SDK 2.1 (Linux) is 1421 ALU ops) For me the speed difference with phatk is 409 Mhash/sec vs 394 Mhash/sec with poclbm. Assuming the same performance increase this gives (409/394) * 270 = 280 Mhash/sec