lc0 - which package

[MOBMAT]

I had lc0 working fine on my PC, but after DL'ing 26.3-rc2 it is tossing errors.

I have a GTX1080 (no fp-16 support).
I dl'ed the lc0-v0.26.3-rc2-windows-gpu-nvidia-cuda.zip file
It installed the cuda 11 dll's along with the other lc0 files.

when i run lc0 from a command prompt, I get the following:

v0.26.3-rc2 built Oct 3 2020
Detected 4 core(s) and 8 thread(s) in 1 group(s).
Group 0 has 4 core(s) and 8 thread(s).
go
Found pb network file: E:\Chess\Leela/703810.pb.gz
Creating backend [cuda-auto]...
Switching to [cuda]...
CUDA Runtime version: 11.1.0
Latest version of CUDA supported by the driver: 11.0.0
WARNING: code was compiled with unsupported CUDA version.
GPU: GeForce GTX 1080
GPU memory: 8 Gb
GPU clock frequency: 1733.5 MHz
GPU compute capability: 6.1
error CUDA error: a PTX JIT compilation failed (c:\projects\lc0\src\neural\cuda\winograd_helper.inc:563)

The download page says "Note: The cuda package requires nvidia driver 456.38 or newer."
I have 456.71 installed

Any thoughs?

[AdminX]

I had lc0 working fine on my PC, but after DL'ing 26.3-rc2 it is tossing errors.

I have a GTX1080 (no fp-16 support).
I dl'ed the lc0-v0.26.3-rc2-windows-gpu-nvidia-cuda.zip file
It installed the cuda 11 dll's along with the other lc0 files.

when i run lc0 from a command prompt, I get the following:

v0.26.3-rc2 built Oct 3 2020
Detected 4 core(s) and 8 thread(s) in 1 group(s).
Group 0 has 4 core(s) and 8 thread(s).
go
Found pb network file: E:\Chess\Leela/703810.pb.gz
Creating backend [cuda-auto]...
Switching to [cuda]...
CUDA Runtime version: 11.1.0
Latest version of CUDA supported by the driver: 11.0.0
WARNING: code was compiled with unsupported CUDA version.
GPU: GeForce GTX 1080
GPU memory: 8 Gb
GPU clock frequency: 1733.5 MHz
GPU compute capability: 6.1
error CUDA error: a PTX JIT compilation failed (c:\projects\lc0\src\neural\cuda\winograd_helper.inc:563)

The download page says "Note: The cuda package requires nvidia driver 456.38 or newer."
I have 456.71 installed

Any thoughs?

Strange, I have both GTX 1060 and RTX 2070S. My system is in use right now, but I have been able to run Cudnn and DX12 on the GTX 1060 if I remember correctly. Not sure if I tried Cuda on the 1060, I did use it on the 2070.

[MMarco]

I had lc0 working fine on my PC, but after DL'ing 26.3-rc2 it is tossing errors.

I have a GTX1080 (no fp-16 support).
I dl'ed the lc0-v0.26.3-rc2-windows-gpu-nvidia-cuda.zip file
It installed the cuda 11 dll's along with the other lc0 files.

when i run lc0 from a command prompt, I get the following:

v0.26.3-rc2 built Oct 3 2020
Detected 4 core(s) and 8 thread(s) in 1 group(s).
Group 0 has 4 core(s) and 8 thread(s).
go
Found pb network file: E:\Chess\Leela/703810.pb.gz
Creating backend [cuda-auto]...
Switching to [cuda]...
CUDA Runtime version: 11.1.0
Latest version of CUDA supported by the driver: 11.0.0
WARNING: code was compiled with unsupported CUDA version.
GPU: GeForce GTX 1080
GPU memory: 8 Gb
GPU clock frequency: 1733.5 MHz
GPU compute capability: 6.1
error CUDA error: a PTX JIT compilation failed (c:\projects\lc0\src\neural\cuda\winograd_helper.inc:563)

The download page says "Note: The cuda package requires nvidia driver 456.38 or newer."
I have 456.71 installed

Any thoughs?

Strange, I have both GTX 1060 and RTX 2070S. My system is in use right now, but I have been able to run Cudnn and DX12 on the GTX 1060 if I remember correctly. Not sure if I tried Cuda on the 1060, I did use it on the 2070.

There are issues with 10xx card and cuda 11 if I remember correctly from what I read from Lc0 discord. I think 26.3-rc1 is build with cuda 10 and should run on your card.

[George Sobala]

You just need to update your nvidia driver so that it supports 11.1

[MOBMAT]

You just need to update your nvidia driver so that it supports 11.1

You were correct. I "thought" I had the latest version, but I did not. I updated the drivers and now it is working. Doesn't seem to be any faster, but the utilization on the GPU is a lot lower.