Topic: third connected vga fails in cgminer, any pair of 2 works (dual psu problem?) (Read 1117 times)
January 18, 2014, 04:13:43 PM
it really does work just fine after retuning (had to reconfig from scratch). good thing it weren't the hardware issues. thank you for your help!
January 18, 2014, 11:12:17 AM
ok, got it. will try to retune.
January 18, 2014, 08:32:33 AM
You can test that by ramping up the intensity, try lifting them all to 10 then 12, 14, etc
Then each card individually with thread-concurrency, then engine clocks, then memory clock, when you get a failure then you know what will have failed.
But those settings are already stable for each card, it's just that they fail when all 3 cards are together. Why is that that's what I want to know.Then each card individually with thread-concurrency, then engine clocks, then memory clock, when you get a failure then you know what will have failed.
There is no set answer, every combination of video card, motherboard, PSU, etc will give a different answer. You have changed your rig so you now need to re-tune.
January 18, 2014, 08:05:59 AM
You can test that by ramping up the intensity, try lifting them all to 10 then 12, 14, etc
Then each card individually with thread-concurrency, then engine clocks, then memory clock, when you get a failure then you know what will have failed.
But those settings are already stable for each card, it's just that they fail when all 3 cards are together. Why is that that's what I want to know. Then each card individually with thread-concurrency, then engine clocks, then memory clock, when you get a failure then you know what will have failed.
January 18, 2014, 07:58:04 AM
I think you have a tuning parameter clash try the following command to check if a default set of commands works okay
cgminer -o 'pool' -u 'username' -p 'password' --scrypt --auto-fan -I 8 --thread-concurrency 8192
It works, with very low hashrate though (14KH per card).cgminer -o 'pool' -u 'username' -p 'password' --scrypt --auto-fan -I 8 --thread-concurrency 8192
Could it be that with those settings cards do not pull enough from PSU and this is what allows them to work simultaneously?
You can test that by ramping up the intensity, try lifting them all to 10 then 12, 14, etc
Then each card individually with thread-concurrency, then engine clocks, then memory clock, when you get a failure then you know what will have failed.
January 18, 2014, 07:12:17 AM
I think you have a tuning parameter clash try the following command to check if a default set of commands works okay
cgminer -o 'pool' -u 'username' -p 'password' --scrypt --auto-fan -I 8 --thread-concurrency 8192
It works, with very low hashrate though (14KH per card).cgminer -o 'pool' -u 'username' -p 'password' --scrypt --auto-fan -I 8 --thread-concurrency 8192
Could it be that with those settings cards do not pull enough from PSU and this is what allows them to work simultaneously?
January 18, 2014, 06:40:05 AM
I think you have a tuning parameter clash try the following command to check if a default set of commands works okay
cgminer -o 'pool' -u 'username' -p 'password' --scrypt --auto-fan -I 8 --thread-concurrency 8192
cgminer -o 'pool' -u 'username' -p 'password' --scrypt --auto-fan -I 8 --thread-concurrency 8192
January 18, 2014, 06:28:34 AM
-n:
[2014-01-18 13:25:14] CL Platform 0 vendor: Advanced Micro Devices, Inc.
[2014-01-18 13:25:14] CL Platform 0 name: AMD Accelerated Parallel Processing
[2014-01-18 13:25:14] CL Platform 0 version: OpenCL 1.2 AMD-APP (1348.5)
[2014-01-18 13:25:14] Platform 0 devices: 3
[2014-01-18 13:25:14] 0 Tahiti
[2014-01-18 13:25:14] 1 Hawaii
[2014-01-18 13:25:14] 2 Hawaii
[2014-01-18 13:25:14] GPU 0 AMD Radeon R9 200 Series hardware monitoring enable
d
[2014-01-18 13:25:14] GPU 1 AMD Radeon R9 200 Series hardware monitoring enable
d
[2014-01-18 13:25:14] GPU 2 AMD Radeon R9 200 Series hardware monitoring enable
d
[2014-01-18 13:25:14] 3 GPU devices max detected
config:
"intensity" : "13,20,20",
"worksize" : "256,512,512",
"lookup-gap" : "2,2,2",
"thread-concurrency" : "8192,24550,24550",
"gpu-engine" : "1100-1100,1000-1000,1000-1000",
"gpu-fan" : "55-55,63-63,63-63",
"gpu-memclock" : "1500,1250,1250",
"gpu-powertune" : "-20,20,20",
"failover-only" : true,
"gpu-dyninterval" : "7",
"gpu-threads" : "2",
"scrypt" : true
[2014-01-18 13:25:14] CL Platform 0 vendor: Advanced Micro Devices, Inc.
[2014-01-18 13:25:14] CL Platform 0 name: AMD Accelerated Parallel Processing
[2014-01-18 13:25:14] CL Platform 0 version: OpenCL 1.2 AMD-APP (1348.5)
[2014-01-18 13:25:14] Platform 0 devices: 3
[2014-01-18 13:25:14] 0 Tahiti
[2014-01-18 13:25:14] 1 Hawaii
[2014-01-18 13:25:14] 2 Hawaii
[2014-01-18 13:25:14] GPU 0 AMD Radeon R9 200 Series hardware monitoring enable
d
[2014-01-18 13:25:14] GPU 1 AMD Radeon R9 200 Series hardware monitoring enable
d
[2014-01-18 13:25:14] GPU 2 AMD Radeon R9 200 Series hardware monitoring enable
d
[2014-01-18 13:25:14] 3 GPU devices max detected
config:
"intensity" : "13,20,20",
"worksize" : "256,512,512",
"lookup-gap" : "2,2,2",
"thread-concurrency" : "8192,24550,24550",
"gpu-engine" : "1100-1100,1000-1000,1000-1000",
"gpu-fan" : "55-55,63-63,63-63",
"gpu-memclock" : "1500,1250,1250",
"gpu-powertune" : "-20,20,20",
"failover-only" : true,
"gpu-dyninterval" : "7",
"gpu-threads" : "2",
"scrypt" : true
January 18, 2014, 06:17:44 AM
Hi,
I've just bought a second PSU - RM850 - with a thought of expanding my current config (Sempron 145, Asrock 970 Extreme4, 4gb ram, Corsair HX850, Asus R9 280X, Gigabyte R9 290), bridged 4th and 5th pins like Corsair's manual said (http://www.corsair.com/en/blog/testing-your-corsair-power-supply/) and connected it to my newly bought R9 290X (pci-e connector + 16x-1x powered riser).
After that when I try to launch cgminer it fails with "-4 clEnqueueWriteBuffer failed". If I disconnect R9 280X, for example, 290+290X both work fine. I've tried some options like connecting my cards in different ways like 280X+290 to secondary PSU, system+290X to primary and it fails the same way.
What am I missing here? My thoughts are that maybe PSUs are not working well together and somehow only one is being able to provide current at one period of time. In that case there's just not enough power for 3 cards hence the error.
I've just bought a second PSU - RM850 - with a thought of expanding my current config (Sempron 145, Asrock 970 Extreme4, 4gb ram, Corsair HX850, Asus R9 280X, Gigabyte R9 290), bridged 4th and 5th pins like Corsair's manual said (http://www.corsair.com/en/blog/testing-your-corsair-power-supply/) and connected it to my newly bought R9 290X (pci-e connector + 16x-1x powered riser).
After that when I try to launch cgminer it fails with "-4 clEnqueueWriteBuffer failed". If I disconnect R9 280X, for example, 290+290X both work fine. I've tried some options like connecting my cards in different ways like 280X+290 to secondary PSU, system+290X to primary and it fails the same way.
What am I missing here? My thoughts are that maybe PSUs are not working well together and somehow only one is being able to provide current at one period of time. In that case there's just not enough power for 3 cards hence the error.
what is your cgminer command line and with all three cards connected what is the response to cgminer -n ?
January 18, 2014, 05:14:07 AM
Hi,
I've just bought a second PSU - RM850 - with a thought of expanding my current config (Sempron 145, Asrock 970 Extreme4, 4gb ram, Corsair HX850, Asus R9 280X, Gigabyte R9 290), bridged 4th and 5th pins like Corsair's manual said (http://www.corsair.com/en/blog/testing-your-corsair-power-supply/) and connected it to my newly bought R9 290X (pci-e connector + 16x-1x powered riser).
After that when I try to launch cgminer it fails with "-4 clEnqueueWriteBuffer failed". If I disconnect R9 280X, for example, 290+290X both work fine. I've tried some options like connecting my cards in different ways like 280X+290 to secondary PSU, system+290X to primary and it fails the same way.
What am I missing here? My thoughts are that maybe PSUs are not working well together and somehow only one is being able to provide current at one period of time. In that case there's just not enough power for 3 cards hence the error.
I've just bought a second PSU - RM850 - with a thought of expanding my current config (Sempron 145, Asrock 970 Extreme4, 4gb ram, Corsair HX850, Asus R9 280X, Gigabyte R9 290), bridged 4th and 5th pins like Corsair's manual said (http://www.corsair.com/en/blog/testing-your-corsair-power-supply/) and connected it to my newly bought R9 290X (pci-e connector + 16x-1x powered riser).
After that when I try to launch cgminer it fails with "-4 clEnqueueWriteBuffer failed". If I disconnect R9 280X, for example, 290+290X both work fine. I've tried some options like connecting my cards in different ways like 280X+290 to secondary PSU, system+290X to primary and it fails the same way.
What am I missing here? My thoughts are that maybe PSUs are not working well together and somehow only one is being able to provide current at one period of time. In that case there's just not enough power for 3 cards hence the error.
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