XMR-Stak Error GPU 2

[DRiccardi92]

Hey guys, im getting an error when launching XMR-Stak with my 3 GPU's

2x 1060
1x 750 ti

2x 1060 alone works

[2018-04-26 20:55:12] : Elevating due to Windows 7 or 8. You need Windows 10 to
use fast memory without UAC elevation.

xmr-stak 2.4.3 26a5d65f

Brought to you by fireice_uk and psychocrypt under GPLv3.
Based on CPU mining code by wolf9466 (heavily optimized by fireice_uk).
Based on NVIDIA mining code by KlausT and psychocrypt.
Based on OpenCL mining code by wolf9466.

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[2018-04-26 20:55:12] : Mining coin: monero7
[2018-04-26 20:55:12] : Starting NVIDIA GPU thread 0, no affinity.
[2018-04-26 20:55:12] : Starting NVIDIA GPU thread 1, no affinity.
[2018-04-26 20:55:12] : Starting NVIDIA GPU thread 2, no affinity.
[CUDA] Error gpu 2: <C:/xmr-stak/xmrstak/backend/nvidia/nvcc_code/cuda_extra.cu>
:280

i left the nvidia config default, even tried 5 threads 5 blocks and 12 bfactor and 100 bsleep, nothing helps..

Nvidia config file:

"gpu_threads_conf" :
[
// gpu: GeForce GTX 1060 3GB architecture: 61
// memory: 2906/3072 MiB
// smx: 9
{ "index" : 0,
"threads" : 34, "blocks" : 27,
"bfactor" : 6, "bsleep" : 25,
"affine_to_cpu" : false, "sync_mode" : 3,
},
// gpu: GeForce GTX 1060 3GB architecture: 61
// memory: 2916/3072 MiB
// smx: 9
{ "index" : 1,
"threads" : 34, "blocks" : 27,
"bfactor" : 6, "bsleep" : 25,
"affine_to_cpu" : false, "sync_mode" : 3,
},
// gpu: GeForce GTX 750 Ti architecture: 50
// memory: 1954/2048 MiB
// smx: 5
{ "index" : 2,
"threads" : 5, "blocks" : 5,
"bfactor" : 8, "bsleep" : 25,
"affine_to_cpu" : false, "sync_mode" : 3,
},

],

Running Windows 7, Cuda 9 and latest Nvidia drivers.

[psychocrypt]

reduce the number of threads for the third gpu

[DRiccardi92]

lower than 5 threads? It even happens with 1 thread. Could this be a driver problem? I installed the Nvidia driver, then plugged the third card in and it was installed by windows. im just scared if i do a DDU and fresh install that i mess everything up.

[DRiccardi92]

Okay, fixed it. Now it works, was a driver issue. Fixed it by First pluggin one card in, reboot, next card, reboot, etc.

Now im happy hashing with 1460 H/s :)

[DRiccardi92]

For all who still have that problem: Never use WLAN, or never use a wifi dongle thats near your gpus. Since im using ethernet cable, problems gone. :D

[sandeshprasad]

Hi DRiccardi92,

I'm getting the below error -
[CUDA] Error gpu 0: <C:/xmr-stak/xmr-stak-2.4.5/xmrstak/backend/nvidia/nvcc_code/cuda_extra.cu>:381

You mentioned that it was a driver issue, can you please explain what exactly driver issue was?

I'm using 1080Ti and below is my config file -

"gpu_threads_conf" :
[
// gpu: GeForce GTX 1080 Ti architecture: 61
// memory: 9335/11264 MiB
// smx: 28
{ "index" : 0,
"threads" : 54, "blocks" : 84,
"bfactor" : 6, "bsleep" : 25,
"affine_to_cpu" : false, "sync_mode" : 3,
},

Appreciate your help!