python OpenCL bitcoin miner

[bolapara]

Okay, I tested the H == 0 mod on linux ubuntblow 10.10, HD5970 and it is 1-2% SLOWER. (Wonder why it is faster on Win?)

... poclbm fork for Win users ... ?

I have a Ubuntu 10.10 box and it gets about 1.1Mh/s faster with this mod.

Ubuntu 10.10, 5870, and this mod consistently knocks me down 5MH/s.

[marcus_of_augustus]

What the heck ... it must be the SDK or fglrx driver version.

ubuntu 10.10 (x86_64)
ATIstreamSDK 2.1
fglrx driver 11.2
HD 5970

H == 0 mod
SLOWER 1-2% (4-5 Mhas/s)

[eleuthria]

My results (+7 mHash/sec per GPU) were from:

Ubuntu 10.10 (x86_64)
ATIStream SDK 2.1
fglrx driver 11.3
HD 5870s

[dishwara]

poclbm_py2exe_20110325.7z
If i just edit the bitcoinminer.cl in the above zip file, from
this

Code:

#ifdef VECTORS
	if (belowOrEquals(H.x, targetH, G.x, targetG))
	{
		output[OUTPUT_SIZE] = output[nonce.x & OUTPUT_MASK] = nonce.x;
	}
	else if (belowOrEquals(H.y, targetH, G.y, targetG))
	{
		output[OUTPUT_SIZE] = output[nonce.y & OUTPUT_MASK] = nonce.y;
	}
#else
	if (belowOrEquals(H, targetH, G, targetG))
	{
		output[OUTPUT_SIZE] = output[nonce & OUTPUT_MASK] = nonce;
	}
#endif
}

to this

Code:

#ifdef VECTORS
	if (H.x == 0)
	{
		output[OUTPUT_SIZE] = output[nonce.x & OUTPUT_MASK] = nonce.x;
	}
	else if (H.y == 0)
	{
		output[OUTPUT_SIZE] = output[nonce.y & OUTPUT_MASK] = nonce.y;
	}
#else
	if (H == 0)
	{
		output[OUTPUT_SIZE] = output[nonce & OUTPUT_MASK] = nonce;
	}
#endif
}

& RUN pocblm.exe with options to mine in a pool, will i may get more hash?
Or i have to compile something?
Using windows & have zero programming knowledge.

[eleuthria]

That's all you have to do.  Open it in notepad/wordpad, change the lines in BitcoinMiner.cl, and see if your speed goes up or down.  At this point nobody has been able to pinpoint exactly why it is slower for some and faster for others.

[rezin777]

4 Mhash/s GAIN
Win7 64
5870s
cat 11.4

[nster]

4 Mhash/s GAIN
Win7 64
5870s
cat 11.4

same here but 5Mh, 2* 6870s and sdk 2.4 cat 11.4

[dishwara]

2 Mhash/s gain.

HD 6870 core 1038, mem 345 272Mhash/s
Now 274 Mhash/s
win7 32, cat 11.4 & 2.4 beta

[drgr33n]

That's all you have to do.  Open it in notepad/wordpad, change the lines in BitcoinMiner.cl, and see if your speed goes up or down.  At this point nobody has been able to pinpoint exactly why it is slower for some and faster for others.

I think I do I think its got to do with what SDk you are using I think this is faster using v2.4 and slower with v2.2. My theory anyway

[SteveB]

With the H == 0 mod, I get about a 2.5 Mhash/s gain on my non overclocked HD 5770.
From about 166 Mhash/s to about 168.5 Mhash/s using -f 7.
If I lower the -f switch to less than 7, I can get a couple more Mhash/s but the cpu usage will rise and increase the power consumption.

Intel Core i7 860 with 8gb ram
Windows 7 64bit
HD 5770 (not overclocked)
Catalyst Version:   11.2   
Stream Version: Not sure. Whatever came with the driver. Probably 2.4

[Garrett Burgwardt]

6990, 2.4 11.4, 7 x64 Ultimate, +8 mh/s or so, from 327 to 335

1.15v, 900 core 1350 mem, I play games so I don't gimp the memory clock

[ghost]

6990, 2.4 11.4, +8 mh/s or so, from 327 to 335

What OS is this on?

[kindle]

6990, 2.4 11.4, +8 mh/s or so, from 327 to 335

Wow great hash rate, besides the OS whats your core and mem clock speed. Have you tried downvolting the vcore?

I am running dual 6990 at 0.935 vcore with 750 core and 625 mem clockspeed. Apparently down memclock only works when core is at 750. Running at -v -w 128 -f 0 on unmod poclbm I get 288 mhash/s per core.

[Garrett Burgwardt]

Fixed my old post with some more infos.

[EgoPaintedGrey]

With the mod i got  + 8 M hash/sec on my 5870.

Windows 7 pro x64
Catalyst 11.4 pre release
SDK 2.4
5870 @980/300

[kaitink00man]

With the mod i got  + 8 M hash/sec on my 5870.

Windows 7 pro x64
Catalyst 11.4 pre release
SDK 2.4
5870 @980/300

Impressive stats 

[marcus_of_augustus]

m0mchill,

just sent you a donation for all the sterling work that your miner has done for me .... moved over to phoenix now but your efforts were appreciated.

cheers,

moa

[IlbiStarz]

I see a lot of people talking about the "mod" and playing around with a bunch off -v -w, etc. How do you use them, and what do they do? Do they give you higher mh/s?

Also, why am I not able to have any other programs open while mining? If I have anything open, or open an application during mining, my computer freezes and I have to reboot.

[m0mchil]

New version is up. Changes:

- BFI_INT (~10% performance improvement)
- TCP keep-alive

[Grinder]

I'm getting verification failed, check hardware on the first block it finds every time. Same setup worked with the old version and works with phoenix. Debian, OpenCL 2.1, 5970.