python OpenCL bitcoin miner

[qed]

The if (H == 0) modification fixed my crossfire issue. Now all the GPUs are used at 97%-99%, before i had 1 GPU at 99% one at around 94% and one at around 85%.

[marcus_of_augustus]

The if (H == 0) modification fixed my crossfire issue. Now all the GPUs are used at 97%-99%, before i had 1 GPU at 99% one at around 94% and one at around 85%.

Wow, really? How could that be I wonder?

Did you do anything else besides pasting in the above section of code?

[nster]

hmmm imana try and see if it fixed my too, brb

[nster]

It MAY have lowered the amplitude of the problem, but not by much, it still requires -f 60 for it to be somewhat stable

[qed]

The if (H == 0) modification fixed my crossfire issue. Now all the GPUs are used at 97%-99%, before i had 1 GPU at 99% one at around 94% and one at around 85%.

Wow, really? How could that be I wonder?

Did you do anything else besides pasting in the above section of code?

I just made all the 3 changes posted, that's it. I'm using 3 hd 6950 on windows 7 64 bit.

[LobsterMan]

I just installed the 270.61 nvidia drivers, and it seems to make the drivers crash each time I exit poclbm by clicking the x, if I ctrl-c they seem to exit fine most of the time. Nothing serious yet, but I keep getting these in my system event log:

"Display driver nvlddmkm stopped responding and has successfully recovered."

have you done any overclocking?

No 

[dishwara]

I just installed the 270.61 nvidia drivers, and it seems to make the drivers crash each time I exit poclbm by clicking the x, if I ctrl-c they seem to exit fine most of the time. Nothing serious yet, but I keep getting these in my system event log:

"Display driver nvlddmkm stopped responding and has successfully recovered."

have you done any overclocking?

No 

you using flag -f1 or fxxx?

Completely remove driver using driver sweeper & install again with CUDA.

[kindle]

Just curious did anyone manage to mine a successful block with the (H == 0)  mod?

[nster]

Just curious did anyone manage to mine a successful block with the (H == 0)  mod?

deepbit's pool is seeing the right hashrate so I am being paid in that way :p

[marcus_of_augustus]

The if (H == 0) modification fixed my crossfire issue. Now all the GPUs are used at 97%-99%, before i had 1 GPU at 99% one at around 94% and one at around 85%.

Wow, really? How could that be I wonder?

Did you do anything else besides pasting in the above section of code?

I just made all the 3 changes posted, that's it. I'm using 3 hd 6950 on windows 7 64 bit.

Besides pasting in the
#ifdef VECTORS
   if (H.x == 0)
-------
loop, what other 2 changes did you make exactly?

[nster]

The if (H == 0) modification fixed my crossfire issue. Now all the GPUs are used at 97%-99%, before i had 1 GPU at 99% one at around 94% and one at around 85%.

Wow, really? How could that be I wonder?

Did you do anything else besides pasting in the above section of code?

I just made all the 3 changes posted, that's it. I'm using 3 hd 6950 on windows 7 64 bit.

Besides pasting in the
#ifdef VECTORS
   if (H.x == 0)
-------
loop, what other 2 changes did you make exactly?

H.y == 0
H == 0
 

I believe he didn't paste but just manually change the 3 things (H.x == 0 and the 2 above)

[marcus_of_augustus]

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 ... ?

[nster]

yup I am on win 7 64 bit

[drgr33n]

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 ... ?

It's not just windows. Its running around 5000kh/s faster on my debian server.

[djex]

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.

[eleuthria]

I made the modification and my 5870s went from 363 mHash/sec and 361 mHash/sec to 370 even on both.  Ubuntu 10.10.

[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.