Posts: 5
Threads: 1
Joined: Feb 2017
I have a 5x 1080 build.
2x psu
Sometimes (please note sometimes as if i restart the rig there is times where they will all run fine) when running hashcat I get this error :
nvmlInit(): GPU is lost
NvAPI_GPU_GetBusId(): NVAPI_ERROR
NvAPI_GPU_GetBusId(): NVAPI_ERROR
NvAPI_GPU_GetBusId(): NVAPI_ERROR
NvAPI_GPU_GetBusId(): NVAPI_ERROR
NvAPI_GPU_GetBusId(): NVAPI_ERROR
NvAPI_GPU_GetBusId(): NVAPI_ERROR
and either 1 or 2 of my gpus will be no longer run.
Help?
Posts: 930
Threads: 4
Joined: Jan 2015
Could be a power issue. Have you audited real-world power draw from the wall for each PSU under various workloads? How is the power balanced across the board and GPUs?
~
Posts: 5
Threads: 1
Joined: Feb 2017
Right, so I have a 1000w psu which support the mobo and 3 cards.
Then another 800w psu which is for the other 2 1080s.
As far as seeing power usage from the wall, I have not done any checking.
Posts: 930
Threads: 4
Joined: Jan 2015
Hmm - that seems like enough headroom to me, on each power supply. With ~180W max per 1080 that's only 540W plus 460W for your mainboard, which seems like plenty.
Only other thing I can think of: If you move the GPUs around, does the problem follow the slots, or the GPUs?
Either way, looks less likely to be a problem with hashcat directly, and more a problem of system stability at load.
~
Posts: 2,936
Threads: 12
Joined: May 2012
Classic symptom of bad risers.
Posts: 5
Threads: 1
Joined: Feb 2017
https://www.amazon.com/6-Pack-PCI-E-Powe...gpu+risers
These are the risers I have, I plugged 2nd PSU into a new outlet, at first all 5 were working then after a couple session 5th one dropped off again with the same error.
Is it these risers are bad? Are they installed poorly? Or?
Posts: 2,936
Threads: 12
Joined: May 2012
02-22-2017, 04:37 AM
(This post was last modified: 02-22-2017, 04:38 AM by epixoip.)
With those style risers, the issue is usually with the USB cable. You need really good, high-quality USB cables with those risers. Another common issue is the little x1 card not seated properly in the slot, especially if it's a x4, x8, or x16 slot.
Posts: 5
Threads: 1
Joined: Feb 2017
Posts: 5
Threads: 1
Joined: Feb 2017
Yikes, now this error has occurred :
clEnqueueWriteBuffer(): CL_OUT_OF_RESOURCES
clEnqueueWriteBuffer(): CL_OUT_OF_RESOURCES
clEnqueueWriteBuffer(): CL_OUT_OF_RESOURCES
clEnqueueWriteBuffer(): CL_OUT_OF_RESOURCES
clEnqueueWriteBuffer(): CL_OUT_OF_RESOURCES
Posts: 5,185
Threads: 230
Joined: Apr 2010
02-23-2017, 01:40 AM
(This post was last modified: 02-23-2017, 01:40 AM by atom.)
