old nvidia GTX 550ti stops working

[rassware]

The miner works with this setup fine until 2.9. Compilation works fine. I have CUDA version 8 installed.

Basic information

• Type of the CPU: AMD AthlonX2 (old one)
• Type of the GPU: nvidia GTX 550ti 4GB

Issue with the execution

• Do you compiled the miner by our own? Yes

  export CXX=/usr/bin/g++-5
  cmake .. -DOpenCL_ENABLE=OFF
  make install

  After launch the miner gets errors and shutdown:

  [2019-03-11 13:15:52] : Mining coin: cryptonight_r
  [2019-03-11 13:15:52] : NVIDIA: try to load library 'xmrstak_cuda_backend_cuda10_0'
  WARNING: NVIDIA cannot load backend library: libxmrstak_cuda_backend_cuda10_0.so: cannot open shared object file: No such file or directory
  [2019-03-11 13:15:52] : NVIDIA: try to load library 'xmrstak_cuda_backend_cuda9_2'
  WARNING: NVIDIA cannot load backend library: libxmrstak_cuda_backend_cuda9_2.so: cannot open shared object file: No such file or directory
  [2019-03-11 13:15:52] : NVIDIA: try to load library 'xmrstak_cuda_backend'
  NVIDIA: found 1 potential device's
  [2019-03-11 13:15:53] : Starting NVIDIA GPU thread 0, no affinity.
  CUDA [9.1/8.0] GPU#0, device architecture 21: "GeForce GTX 550 Ti"... device init succeeded
  [2019-03-11 13:15:53] : NVIDIA: use library 'xmrstak_cuda_backend'
  [2019-03-11 13:15:53] : WARNING: backend CPU disabled.
  [2019-03-11 13:15:53] : Fast-connecting to XXXXXXXXXXXXX pool ...
  [2019-03-11 13:15:53] : Pool XXXXXXXXXXXXX  connected. Logging in...
  [2019-03-11 13:15:53] : Difficulty changed. Now: 5000.
  [2019-03-11 13:15:53] : Pool logged in.
  [2019-03-11 13:15:53] : nvrtcCompileProgram failed: NVRTC_ERROR unknown
  [2019-03-11 13:15:53] : Program compile log: nvrtc: error: failed to load builtins
  [CUDA] Error gpu 0: <cryptonight_core_cpu_hash>:1040 "device kernel image is invalid"
  terminate called after throwing an instance of 'std::runtime_error'
  what():  [CUDA] Error: device kernel image is invalid
  Abgebrochen (Speicherabzug geschrieben)

Stability issue

• Is the CPU or GPU overclocked? No
• Is the Main memory of the CPU or GPU undervolted? No

[bycarloz]

I'm using cuda 8 and I compiled the miner 2.10.0 to cuda 8 and I'm extracting, monero in graphics gtx 460 ti, gtx 570 ti, gtx 750 ti Driver: 391.35. although I am going to degrade the controllers to 372.70 or 388.71 to see if the hashrate goes up a bit more, since in the miner xmr-stak 2.6.0 I had more hashrate and I used the drivers 391.35 but the recommended thing is to have to cuda 8 one of this two driver installed 372.70 or 388.71

[Spudz76]

Go to C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\bin\ Copy cudart64_80.dll and nvrtc64_80.dll and nvrtc-builtins64_80.dll into wherever xmr-stak.exe is located.

Or install CUDA 8 Toolkit on the mining rig just the runtime section (more specifically the CUDART and NVRTC parts) but it's way easier to just copy the DLLs around.

[rassware]

Thanks @Spudz76 for your help. My system is an Ubuntu 18.04 by the way. I had a wrong path to the cuda library in my .profile in my home dir.

Correct path in my .profile (/usr/local/cuda is a symlink to /usr/local/cuda-8.0): LD_LIBRARY_PATH="/usr/local/cuda/lib64:$LD_LIBRARY_PATH"

Thanks!

[Spudz76]

Ah, yes. I have not used the new version on CUDA-Linux yet but same issue different fixes.