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Author Topic: python OpenCL bitcoin miner  (Read 1200859 times)
bolapara
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April 23, 2011, 06:04:28 PM
 #781


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.
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marcus_of_augustus
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April 23, 2011, 09:45:31 PM
 #782

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
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April 24, 2011, 01:11:43 AM
 #783

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

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

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dishwara
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April 24, 2011, 01:23:36 AM
 #784

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.
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April 24, 2011, 02:03:36 AM
 #785

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.

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rezin777
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April 24, 2011, 04:19:00 AM
 #786

4 Mhash/s GAIN
Win7 64
5870s
cat 11.4
nster
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April 24, 2011, 05:24:35 AM
 #787

4 Mhash/s GAIN
Win7 64
5870s
cat 11.4

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

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dishwara
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April 24, 2011, 05:36:17 AM
 #788

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
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April 24, 2011, 11:09:45 AM
 #789

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 Cheesy 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 Cheesy
SteveB
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April 24, 2011, 10:34:24 PM
 #790

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
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April 24, 2011, 11:05:26 PM
 #791

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 Wink
ghost
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April 25, 2011, 02:07:33 AM
 #792

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

What OS is this on?
kindle
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April 25, 2011, 02:26:37 AM
 #793

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.

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April 25, 2011, 02:37:24 AM
 #794

Fixed my old post with some more infos.
EgoPaintedGrey
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April 25, 2011, 03:04:43 AM
 #795

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
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April 26, 2011, 07:57:45 AM
 #796

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  Shocked

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marcus_of_augustus
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April 27, 2011, 12:47:18 AM
 #797


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
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April 28, 2011, 04:33:48 AM
 #798

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.

It's better to be pissed off, than to be pissed on.
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m0mchil
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April 28, 2011, 07:59:53 AM
 #799

New version is up. Changes:

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

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April 28, 2011, 08:14:13 AM
 #800

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.
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