Bitcoin Discussion Thread Part 2

I use phoenix from guiminer and haven't had an issue with btcguild. If you need help, I can do a quick teamview session to troubleshoot it right now. PM me if you need it.
 
I believe DEVICE=0 denotes the CPU. Try DEVICE=1. Put the "-k phatk" after the login info
 
All of my rigs, first GPU starts with DEVICE=1

[Edit]
I take that back, on my Windows machines, DEVICE=0 is the first GPU. In Linux, it is 1.
 
my setup the cards are 0 and 1 and the CPU is 2

memory speed is irrelevant and folks are min clocking it to save watts
 
BTC Guild doesn't need a password for your worker to connect. Try just leaving it out or literally putting in XXXX for the password.

Or just create a new worker. You can even keep the same name. Just change the name to add "old" to the end of the current one and re-create the worker with the original name.
 
I verified the card is definitely DEVICE=0. DEVICE=1 throws a fit because it can't do BFI_INT (i5-2500).

Also, I can set an underclock for the mem in Afterburner but it doesn't drop the freq, it just runs at the stock 1250MHz. If I overclock however it will run at whatever I set the overclock freq at. Can I not underclock the RAM?

I'm running both cards at 400+ MHash/s on Slush right now but I'd much prefer to be on BTC-guild... Y U NO WORK!?
 
sethmo said:
All of my rigs, first GPU starts with DEVICE=1

[Edit]
I take that back, on my Windows machines, DEVICE=0 is the first GPU. In Linux, it is 1.
Click to expand...

I guess on mine it's different. GuiMiner Console is showing Device=1, 2, & 3 for my gpus.
 
yeah...afterburner is being wonky for me too, thought it was ulps which was a problem for me before and I had not edited it in the registry since the latest drivers, but I went through and disabled it and afterburner still crashes the box if I change anything but voltage, at least I can do that, but ???
 
hmm.. yeah Afterburner kept doing that to me aswell, where I couldn't underclock the memory. Unfortunately, I can't remember how the heck i fixed it. You might try downloading whatever the very latest beta is. What version are you running now?
 
210

I was running the beta before but it expired and wouldn't run even if I uninstalled and redownloaded/installed it. this one at least runs.

in other news the Phoenix miner on the other card inexplicably started picking up shares so I'm hashing 860 here. Bailing wire and duct tape but it works...lol.
 
Found out my workers/accounts weren't syncing properly with uswest. If anyone has issues with BTCG I highly suggest stopping over to the #btcguild channel on freenode for help. There are lots of miners and at least one admin in there that are huge help and happy to answer any dumb question. Lots of chat about mining in general as well and the servers.

Currently doing around 890 between the two 6950s and a bunch of CPUs. Now I want more GPUs... what have I created!?! *Frankenstein moment*
 
I would do the math carefully on if those cpu miners are actually paying

in other news, defrosting chicken on the cards here
 
The CPU miners barely break even on their use. They run about 40 watt over idle and generate around 15 MH/s each. Thus they generate about a cent a day profit after removing electric.

I've been watching Slickdeals, ebay, newegg, and amazon like a hawk for deals on 69xx cards. I figure I could use one more to fill all the slots on my motherboard and better utilize my new PSU.
 
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jojo69 said:
210

I was running the beta before but it expired and wouldn't run even if I uninstalled and redownloaded/installed it. this one at least runs.

in other news the Phoenix miner on the other card inexplicably started picking up shares so I'm hashing 860 here. Bailing wire and duct tape but it works...lol.
Click to expand...

Hmm I'm running 2.2.0 beta 4 and I can at least underclock to 600 on my 6950, maybe it'll work for you.
 
I'm using MSI Afterburner 2.1.0 (lastest version on their site),used unofficial OC mode and everytime it starts,it automatically sets my RAM freq to default of 1200MHz although i underclocked it to 300MHz and saved the profile.

The only way to UC the RAM again is UC it to 600MHz then close and restart AB,then UC to 300MHz.Also by doing that,i have to OC the core freq again.That's a pain in the ass.

Anyone can help me on a stable version that doesn't do this?
 
trixx seems to be working a bit better for me, it always loads the profile for gpu0 and has no problem setting mem at 300. I dont think its applying a profile to gpu1 on startup, but still has no prob manualy setting mem to 300 on the 2nd one, just doesnt want to startup with a profile.
 
Using the default OpenCL miner for GUIminer, I'm pulling down 378 Mhash/s on a Gigabyte 6950 2Gb card. Current speeds in CCC:

GPU: 930
Mem: 1250
Power: 20%
Fan: 55%
Temp: 73C

Seem peachy?

Following flags are active -
-v 2 -w128 -f2 BFI_INT AGGRESSION=6

I want to get this card nice and stable before I add a 5830.
 
dr_latino999 said:
Using the default OpenCL miner for GUIminer, I'm pulling down 378 Mhash/s on a Gigabyte 6950 2Gb card. Current speeds in CCC:

GPU: 930
Mem: 1250
Power: 20%
Fan: 55%
Temp: 73C

Seem peachy?

Following flags are active -
-v 2 -w128 -f2 BFI_INT AGGRESSION=6

I want to get this card nice and stable before I add a 5830.
Click to expand...

can you unlock the shaders in that one?

What voltage did you need to get 930?

As Lorien has pointed out earlier in the thread the modded Phoenix kernal will hash faster...but is very sensitive to other uses of the rig, even just a browser can knock 50Mh/s

fwiw I was getting 403 with a 6950 at 905 with the OpenCL miner...but my shaders are unlocked.
 
dr_latino999 said:
Using the default OpenCL miner for GUIminer, I'm pulling down 378 Mhash/s on a Gigabyte 6950 2Gb card. Current speeds in CCC:

GPU: 930
Mem: 1250
Power: 20%
Fan: 55%
Temp: 73C

Seem peachy?

Following flags are active -
-v 2 -w128 -f2 BFI_INT AGGRESSION=6

I want to get this card nice and stable before I add a 5830.
Click to expand...

I get the same mhash @ core 850 with my MSI 6950 2gb and unlocked shaders. Core 900 I am at 400mhash.

Try lowering your Mem clock down to 450-500, should help with the heat. My cards rarely goes above 67C
 
I have not done the shader mod, but how do I lower my Mem clock that far? CCC restricts me to 1250 as a bottom limit.

jojo69 said:
can you unlock the shaders in that one?
Click to expand...
I actually have no idea, I haven't had the urge to look into till just now.
What voltage did you need to get 930?
Click to expand...
I don't know the exact voltage as CCC has the slider allowing max draw, but I was stable at 8% over. 20% is only a hard limit that the card is allowed to draw.
[/quote]
As Lorien has pointed out earlier in the thread the modded Phoenix kernal will hash faster...but is very sensitive to other uses of the rig, even just a browser can knock 50Mh/s
Click to expand...
I tried the tweaks posted earlier - http://hardforum.com/showpost.php?p=1037460056&postcount=305, but I saw no appreciable difference. I haven't figured out how to configure one of the other kernels to surpass the stock OpenCL.
 
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dr_latino999 said:
I have not done the shader mod, but how do I lower my Mem clock that far? CCC restricts me to 1250 as a bottom limit.


I actually have no idea, I haven't had the urge to look into till just now.
I don't know the exact voltage as CCC has the slider allowing max draw, but I was stable at 8% over. 20% is only a hard limit that the card is allowed to draw.
Click to expand...

I tried the tweaks posted earlier - http://hardforum.com/showpost.php?p=1037460056&postcount=305, but I saw no appreciable difference. I haven't figured out how to configure one of the other kernels to surpass the stock OpenCL.[/QUOTE]

If the card is new, it's likely laser cut and even if you can unlock the shaders they might not even be there to use. I have two Sapphire 6950 2GB and several individuals have said that unlocking is either A: Not possible without large risk (no switch) or B: Not beneficial because there are no extra shaders to unlock.

I'd suggest giving phoenix a try with "-k phatk BFI_INT AGGRESSION=7 VECTORS FASTLOOP=false WORKSIZE=128" and modify your kernel.cl file to reflect: http://hardforum.com/showpost.php?p=1037438435&postcount=133

I'm at 930/1250 on stock volts, can't downclock my memory for some reason, and I'm getting about 405 MH/s on both.
 
I am envious of the clocks you guys are getting, 915 seems to be my limit and I need 1.18 v to do it

pretty happy with my hashrate though

Hey, what are folks out there paying per kWh?
 
jojo69 said:
I am envious of the clocks you guys are getting, 915 seems to be my limit and I need 1.18 v to do it

pretty happy with my hashrate though

Hey, what are folks out there paying per kWh?
Click to expand...

I'm paying $0.083 kw/h in central Missouri.
 
I probably won't have to pay for it when I put the cards in my server in my parents' basement. If I do though, I think their electric is a bit lower than the cost in the link above... around 11.5 c/kwh.
 
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[strike=1]I should delete that old post with tweaks and update it. Most of those tweaks have long been rolled into the actual miners and others have been proven to lower hash rate.[/s]
Old post has been edited to point to this one.

Updated list of tweaks and tips 07-22-2011:

1) Guiminer 20110701 released: https://github.com/downloads/Kiv/poc...r-20110701.exe
http://forum.bitcoin.org/index.php?t...1551#msg311551

This has the latest versions of all miners. It also includes fallback support when #n pool connection attempts fail.
Click to expand...

2) POCLBM and Phatk kernel optimization by bitless - Status: Redundant.
This is the original 3% kernel tweak. It has now been rolled into the versions of phoenix and poclbm that come with the latest guiminer. There is no need to edit the kernel.cl files anymore.
Click to expand...

3) Phatk kernel syntax error correction. Status: Redundant
This has already been rolled into newer versions of the phatk kernel.
Click to expand...

4) POCLBM kernel optimization by goxed. Status: Obsolete
The __local tweak has been confirmed to cause a slow down in hash rate. Please, do not use it anymore. https://forum.bitcoin.org/index.php?topic=23309.msg303916#msg303916

DiabloD3 said:
I am locking this topic.

As per OpenCL specification:
6.5.2 __local (or local)
The __local or local address space name is used to describe variables that need to be
allocated in local memory and are shared by all work-items of a work-group. This qualifier can
be used with arguments to functions (including __kernel functions) declared as pointers, or
with variables declared inside a __kernel function.

6.5.4 __private (or private)
All variables inside a function (including __kernel functions), or passed into the function as
arguments are in the __private or private address space. Variables declared as pointers
are considered to point to the __private address space if an address space qualifier is not
specified except for arguments declared to be of type image2d_t and image3d_t which
implicitly point to the __global address space.
Click to expand...

In other words, the hardware threads are stomping each others work and producing nonsense.
Click to expand...
Click to expand...

Now for some actual new tweaks:

5) Further improved phatk OpenCL Kernel (> 3% increase) for Phoenix by Diapolo. Status: Updated regularly
Download links and instructions here: http://forum.bitcoin.org/index.php?topic=25860.0;all

There are too any changes to list here, the gist of it is that it reduces the number of ALU OPs required to process a hash.

Kernel performance (BFI_INT active / APP KernelAnalyzer CAL 11.3 profile):
HD5870
original phatk: 1391 ALU OPs
2011-07-01: 1387 ALU OPs
2011-07-03: 1383 ALU OPs
2011-07-06: 1378 ALU OPs
2011-07-07: 1378 ALU OPs
2011-07-11: 1376 ALU OPs
2011-07-17: 1374 ALU OPs (17 less compared to original phatk)
HD6970
original phatk: 1706 ALU OPs
2011-07-01: 1709 ALU OPs
2011-07-03: 1705 ALU OPs
2011-07-06: 1701 ALU OPs
2011-07-07: 1701 ALU OPs
2011-07-11: 1700 ALU OPs
2011-07-17: 1698 ALU OPs (8 less compared to original phatk)


The fewer the Arithtmetic Logic Unit OPerations per second, the more hashes you can process per cycle. Newer versions incorporate the changes from all previous versions.
Click to expand...
 
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Thumbs up to the "new tweak" looking like it was good for 15mh per card (still early)
 
Getting 430-435 Mhash/sec on my 5870. 965 core, 300 memory. Looks good? Using the 07-01-2011 Phoenix with the kernel linked by Lorien above. BTCGuild
 
Damn Lorien

and here I am too drunk to implement...lol...try busting the latest not on Friday night

just kidding
 
TechHead said:
Getting 430-435 Mhash/sec on my 5870. 965 core, 300 memory. Looks good? Using the 07-01-2011 Phoenix with the kernel linked by Lorien above. BTCGuild
Click to expand...

Looks good to me. Try bumping up the memory to 325Mhz though see what happens.


jojo69 said:
Damn Lorien

and here I am too drunk to implement...lol...try busting the latest not on Friday night

just kidding
Click to expand...
WAT!
I updated before heading out myself. Designated driver tonight though, so all I got to do is talk it up with women in various degrees of drunkenness. The conversations actually got more interesting the drunker they got :D
 
Gonna sell the Hawk and getting a new 6950 reference with the hope of success unlocking instead of getting another Hawk.

I just cross my fingers that they have the 6950 in stock,or i'll be FUBAR.
 
I could be wrong but I thought all of the new 6950s were laser cut to prevent unlocking. You may have better luck buying a used one.
 
I might get luck and pick up an old batch which wasn't laser-cut.No one sells the 6950 due to BTC mining.
 
These uncut ones turned out to be one hell of a choice, funny, until this came along I was kind of regretting not going Nvidia for the folding performance...not any more
 
I might have to switch back to arsbitcoin. My BTC Guild btc/day keeps going down.
 
dood what's up with that, I'm down 25% on my "24 hour rewards" in the last two days, hashing more than ever?

edit/ oh man...it just gets worse...we are sucking balls right now
 
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xcooling said:
BITCOIN SCAMMER

scammer purchased bitcoin and paid with paypal, after receiving the bitcoin, creates a dispute with paypal *Unauthorized Claim* and paypal blocks the transfer.
Click to expand...

This is on par with the 419 scams. I've heard about that kind of scam since March.... why did you fall for this?
 
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