Redline888 i am sorry to say but you have to accept that multi gpu mining is never gonna be the same as single gpu mining
No matter what driver you try it fairly simple your cpu is dividing control over those 2 or 3 and that costs a bit of time resulting in a minor less hashing speed which i think will allways be present in systems with more then 1 gpu.
Even under the old ati stream you see a small drop in performance but not so much as with opencl i think this has todo with the fact that its an platform independant design to run on nvidia and amd videocards.
When i start a single 5870 on 920 Mhz i get easy 410 Mh average when i put in the second card it drops to 395 Mh i tried every driver which can run cgminer and all with same result. A single gpu card setup will allways outperform a multi gpu
At least on windows based platform since i not run any linux i cant tell if that has the same performance hit as well.
Second peak performance is a not so good choice for comparing the results i use only average hash speeds for compare a more real performance indication
Topic: OFFICIAL CGMINER mining software thread for linux/win/osx/mips/arm/r-pi 4.11.0 - page 736. (Read 5805728 times)
December 16, 2011, 03:57:02 AM
December 16, 2011, 03:30:54 AM
Ok, I will try but the thing is when a VGA works ALONE the hashrate is high as it is used to be. The hashrate drops when I activate the 2nd VGA and drops even more if I activate the 3rd one.
Just out of curiosity, what kind of hardware problems have you eliminated so far?
One reason I can think of why a second card might cause another to slow is that the power supply's output isn't high enough, but I'd expect a much higher impact on hashrate in that case.
What I'd expect to be much more likely is that those graphics cards all use the same bus to communicate with the CPU/whatever, which would result in the behaviour you describe.
One more thing for you to try, though (in case it is a software problem): if you manually set the intensity of the first card (start, say, with 3 and use cgminer's menu to go from there), does that help at all? What effects does that have (on the second and third cards, the effect on the first should be obvious)?
(Just because I'm a little anal about these things: this is what "VGA" means: http://en.wikipedia.org/wiki/VGA)
December 16, 2011, 03:17:36 AM
Ok, I will try but the thing is when a VGA works ALONE the hashrate is high as it is used to be. The hashrate drops when I activate the 2nd VGA and drops even more if I activate the 3rd one.
December 16, 2011, 02:41:37 AM
I use Aoclbf 1.81 + Phoenix 1.7.0 whith modofied kernel + Cat 12.1 + Windows 7 x64 SP1
i tried cat11.12 installed on cat11.11 / 2 x 6990-rig
multi-gpu-cpu-bug solved BUT hashrate down ~ 5 %
cat12.1 seems to have the performance of 11.12
maybe you have to go back to cat11.11
December 15, 2011, 07:19:21 PM
Try downgrading the AMD drivers.... that helps sometimes
December 15, 2011, 02:02:50 PM
The cooling is not the source of this problem. Clocks are the same as they were when everything was perfect. Temps are perfect as well! It is something with OpenCL but I can not figure out what it is
December 15, 2011, 09:16:53 AM
Hi. The situation is as follows:
I have 3 VGAs. Peak performance is 6950(326 MH/s), Asus 5870 (461 MH/s), Gigabyte 5870 (431 MH/s)
When a single card is mining (6950 for example) everything is ok with its hashrate. When the second turns on the (Asus for example) hashrate drops and bounces from ~316 to ~326 for 6950 and ~326-367 for Asus and when I turn Gigabyte on the hashrate drops even more significantly ~296-309 6950, ~311-354 Asus, ~309-349 Gigabyte.
What the hell is going on?
I use Aoclbf 1.81 + Phoenix 1.7.0 whith modofied kernel + Cat 12.1 + Windows 7 x64 SP1
Flags are: -k phatk2 VECTORS2 BFI_INT FASTLOOP=false AGGRESSION=11 DEVICE=X
Everything was perfect untill I installed Intel OpenCL SDK. Now I have uninstalled it but the problem remains.
Today I tried CGminer 2.0.8! VGA clocks are the same!
Flags are:
cgminer -o http://pit.deepbit.net:8332 -u *** -p *** -I d,10,10 -k phatk
This gives me ~306 MH/s for 6950, ~411 and ~ 396 for Asus and Gigabyte correspondingly.
PLEASE help me to resolve a situation!
Thanx in advance
My first thought: Cooling problem. I have 3 VGAs. Peak performance is 6950(326 MH/s), Asus 5870 (461 MH/s), Gigabyte 5870 (431 MH/s)
When a single card is mining (6950 for example) everything is ok with its hashrate. When the second turns on the (Asus for example) hashrate drops and bounces from ~316 to ~326 for 6950 and ~326-367 for Asus and when I turn Gigabyte on the hashrate drops even more significantly ~296-309 6950, ~311-354 Asus, ~309-349 Gigabyte.
What the hell is going on?
I use Aoclbf 1.81 + Phoenix 1.7.0 whith modofied kernel + Cat 12.1 + Windows 7 x64 SP1
Flags are: -k phatk2 VECTORS2 BFI_INT FASTLOOP=false AGGRESSION=11 DEVICE=X
Everything was perfect untill I installed Intel OpenCL SDK. Now I have uninstalled it but the problem remains.
Today I tried CGminer 2.0.8! VGA clocks are the same!
Flags are:
cgminer -o http://pit.deepbit.net:8332 -u *** -p *** -I d,10,10 -k phatk
This gives me ~306 MH/s for 6950, ~411 and ~ 396 for Asus and Gigabyte correspondingly.
PLEASE help me to resolve a situation!
Thanx in advance
December 15, 2011, 12:53:02 AM
Hi. The situation is as follows:
I have 3 VGAs. Peak performance is 6950(326 MH/s), Asus 5870 (461 MH/s), Gigabyte 5870 (431 MH/s)
When a single card is mining (6950 for example) everything is ok with its hashrate. When the second turns on the (Asus for example) hashrate drops and bounces from ~316 to ~326 for 6950 and ~326-367 for Asus and when I turn Gigabyte on the hashrate drops even more significantly ~296-309 6950, ~311-354 Asus, ~309-349 Gigabyte.
What the hell is going on?
I use Aoclbf 1.81 + Phoenix 1.7.0 whith modofied kernel + Cat 12.1 + Windows 7 x64 SP1
Flags are: -k phatk2 VECTORS2 BFI_INT FASTLOOP=false AGGRESSION=11 DEVICE=X
Everything was perfect untill I installed Intel OpenCL SDK. Now I have uninstalled it but the problem remains.
Today I tried CGminer 2.0.8! VGA clocks are the same!
Flags are:
cgminer -o http://pit.deepbit.net:8332 -u *** -p *** -I d,10,10 -k phatk
This gives me ~306 MH/s for 6950, ~411 and ~ 396 for Asus and Gigabyte correspondingly.
PLEASE help me to resolve a situation!
Thanx in advance
I have 3 VGAs. Peak performance is 6950(326 MH/s), Asus 5870 (461 MH/s), Gigabyte 5870 (431 MH/s)
When a single card is mining (6950 for example) everything is ok with its hashrate. When the second turns on the (Asus for example) hashrate drops and bounces from ~316 to ~326 for 6950 and ~326-367 for Asus and when I turn Gigabyte on the hashrate drops even more significantly ~296-309 6950, ~311-354 Asus, ~309-349 Gigabyte.
What the hell is going on?
I use Aoclbf 1.81 + Phoenix 1.7.0 whith modofied kernel + Cat 12.1 + Windows 7 x64 SP1
Flags are: -k phatk2 VECTORS2 BFI_INT FASTLOOP=false AGGRESSION=11 DEVICE=X
Everything was perfect untill I installed Intel OpenCL SDK. Now I have uninstalled it but the problem remains.
Today I tried CGminer 2.0.8! VGA clocks are the same!
Flags are:
cgminer -o http://pit.deepbit.net:8332 -u *** -p *** -I d,10,10 -k phatk
This gives me ~306 MH/s for 6950, ~411 and ~ 396 for Asus and Gigabyte correspondingly.
PLEASE help me to resolve a situation!
Thanx in advance
December 14, 2011, 05:05:40 AM
Avast antivirus also flagged the program cgminer.exe. And the webpage is listed as infected when I try to download the new version. So it is a backdoor/keylogger or what? The "virus program authors are idiots, ignore them" response is not encouraging at all. Doesn't inspire confidence - what is up with this?
cgminer uses up all your GPU power and converts it to Bitcoin for you - you can then convert BTC to $ if you wish.Money is evil, so you better avoid using cgminer ...
Quite far fetched.
))
December 14, 2011, 03:12:38 AM
Avast antivirus also flagged the program cgminer.exe. And the webpage is listed as infected when I try to download the new version. So it is a backdoor/keylogger or what? The "virus program authors are idiots, ignore them" response is not encouraging at all. Doesn't inspire confidence - what is up with this?
cgminer uses up all your GPU power and converts it to Bitcoin for you - you can then convert BTC to $ if you wish.Money is evil, so you better avoid using cgminer ...
December 13, 2011, 11:37:04 PM
The source code for cgminer is available online:
https://github.com/ckolivas/cgminer
You or the antivirus makers can audit it or build it yourself for windows and be guaranteed it's not a virus if you don't trust the binaries I supply. However, I'm the one who wrote the software so if you can't trust me despite the source code being available, then you are in deep shit. Soon every single windows user who wants to mine will be alienated by the antivirus software makers because every single piece of mining software *can* be bundled with a trojan. That doesn't make the mining software a virus trojan adware spyware keylogger or other random fucking shit that poor windows users suffer.
https://github.com/ckolivas/cgminer
You or the antivirus makers can audit it or build it yourself for windows and be guaranteed it's not a virus if you don't trust the binaries I supply. However, I'm the one who wrote the software so if you can't trust me despite the source code being available, then you are in deep shit. Soon every single windows user who wants to mine will be alienated by the antivirus software makers because every single piece of mining software *can* be bundled with a trojan. That doesn't make the mining software a virus trojan adware spyware keylogger or other random fucking shit that poor windows users suffer.
December 13, 2011, 11:32:46 PM
Avast antivirus also flagged the program cgminer.exe. And the webpage is listed as infected when I try to download the new version. So it is a backdoor/keylogger or what? The "virus program authors are idiots, ignore them" response is not encouraging at all. Doesn't inspire confidence - what is up with this?
Read/search the thread? Some trojans, etc. use cgminer, so it gets flagged.
December 13, 2011, 11:28:38 PM
Avast antivirus also flagged the program cgminer.exe. And the webpage is listed as infected when I try to download the new version. So it is a backdoor/keylogger or what? The "virus program authors are idiots, ignore them" response is not encouraging at all. Doesn't inspire confidence - what is up with this?
December 12, 2011, 06:53:27 PM
In a thread elsewhere...
Quote from: ckolivas
Linuxcoin is built on an older ubuntu than the 2.0.8 package is. For now you will have much more luck with linuxcoin and the 2.0.7 binary which was built for an older ubuntu linux.
I'm not using Linuxcoin but seeing the above raised this question for me: I succeeded in building 2.0.8 under Ubuntu 10.04, but I don't have my hardware set up yet so I can't test yet. Given that I'll be using a 2.0.8 built without errors, should I expect it to fail under 10.04? December 12, 2011, 03:45:12 AM
December 12, 2011, 03:19:41 AM
No.
December 12, 2011, 03:00:44 AM
Looks like you have dual GPU cards in there. The fan is controlled entirely by the first GPU and reports back the correct fan speed in RPM. When the device does not support reporting speed in RPM, cgminer will report it back in percentage. The fact that that GPU reports a lower speed is because it's trying to set the fan lower because the temperature is below 75, but the value is of course meaningless since no fan is actually connected to the output on that GPU; it's entirely dependent on the fan of its twin GPU.
Aha, that explains a lot, thanks ;-)
Do you have an idea about the 2nd question?
December 11, 2011, 08:24:35 PM
Looks like you have dual GPU cards in there. The fan is controlled entirely by the first GPU and reports back the correct fan speed in RPM. When the device does not support reporting speed in RPM, cgminer will report it back in percentage. The fact that that GPU reports a lower speed is because it's trying to set the fan lower because the temperature is below 75, but the value is of course meaningless since no fan is actually connected to the output on that GPU; it's entirely dependent on the fan of its twin GPU.
December 11, 2011, 02:17:12 PM
Can it be that there's a possible bug in cgminer? Look at GPU6 in the below image:
Y U NO 85%? ;-)
Also, is it normal that the default layout (see picture) changes over time? After z while, the % numbers goes away and RPMs are in its place...
Y U NO 85%? ;-)
Also, is it normal that the default layout (see picture) changes over time? After z while, the % numbers goes away and RPMs are in its place...
December 11, 2011, 10:29:26 AM
Maybe if you create a .bat file with all the options you want in it
Whenever you want to start cgminer, just execute the .bat
Works for me, although I don't use the gpu -vddc
(and you don't have to start cgminer from a terminal window, but straight from your desktop)
Brat
Okay, I am noob at coding in general, I have created a couple of bat files in the past but only by following instructions is it possible you can help me to create such a bat file?Whenever you want to start cgminer, just execute the .bat
Works for me, although I don't use the gpu -vddc
(and you don't have to start cgminer from a terminal window, but straight from your desktop)
Brat
open up notepad
"C:\\place where your cgminer directory is located\cgminer.exe" - o http://pool:8332 -u user -p password and then all the backup pools/options you want to use
Name the file smtg.bat and save it not as a text file but filetype other
That should do the trick
Good luck
Thank you very much that did the trick
GREAT !!!
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