1)
Message boards :
Number crunching :
Nvidia 397.31 drivers possibly causing GPU to crash
(Message 117994)
Posted 1961 days ago by diederiks
Thanx for the fast response, i do not think (but not sure) these problems are related, as GPUz and Boinc doesn't show any OpenCL driver/capabilities and they do with older drivers i do think this is a driver problem. I have reported this problem to Nvidia but have not received any response yet.
The problem could also be that the latest drivers introduced some OpenCL 2.0 experimental stuff, maybe Boinc and GPUz do not detect the 2.0 capabilities correct.
More info: http://us.download.nvidia.com/Windows/397.64/397.64-win10-win8-win7-notebook-release-notes.pdf
Experimental OpenCL 2.0 Features
Select features in OpenCL 2.0 are available in the driver for evaluation purposes only. The
following are the features as well as a description of known issues with these features in
the driver:
Device side enqueue
•The current implementation is limited to 64-bit platforms only.
•OpenCL 2.0 allows kernels to be enqueued with global_work_size larger than the
compute capability of the NVIDIA GPU. The current implementation supports only
combinations of global_work_size and local_work_size that are within the compute
capability of the NVIDIA GPU.
The maximum supported CUDA grid and block size of NVIDIA GPUs is available
at http://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#computecapabilities.
For a given grid dimension, the global_work_size can be determined by
CUDA grid size x CUDA block size.
•For executing kernels (whether from the host or the device), OpenCL 2.0 supports
non-uniform ND-ranges where global_work_size does not need to be divisible by
the local_work_size. This capability is not yet supported in the NVIDIA driver, and
therefore not supported for device side kernel enqueues.
Shared virtual memory
•The current implementation of shared virtual memory is limited to 64-bit platforms
only.
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2)
Message boards :
Number crunching :
Nvidia 397.31 drivers possibly causing GPU to crash
(Message 117975)
Posted 1961 days ago by diederiks
I also just upgraded to 397.64 after 397.31 & 397.55HF did not work for me, but i found a problem that my 940MX shows CUDA support but no OpenCL support in Boinc and GPUz.
Does your card show CUDA and OpenCL support in Boinc?
Part of my BOINC log:
15-5-2018 22:57:55 | | CUDA: NVIDIA GPU 0: GeForce 940MX (driver version 397.64, CUDA version 9.2, compute capability 5.0, 2048MB, 1690MB available, 953 GFLOPS peak)
15-5-2018 22:57:55 | | OpenCL: Intel GPU 0: Intel(R) HD Graphics 620 (driver version 23.20.16.4982, device version OpenCL 2.1 NEO, 3244MB, 3244MB available, 192 GFLOPS peak)
15-5-2018 22:57:55 | | OpenCL CPU: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz (OpenCL driver vendor: Intel(R) Corporation, driver version 7.6.0.691, device version OpenCL 2.1 (Build 691))
15-5-2018 22:57:55 | Milkyway@Home | Application uses missing NVIDIA GPU
15-5-2018 22:57:55 | Milkyway@Home | Missing coprocessor for task
15-5-2018 22:57:55 | | App version needs OpenCL but GPU doesn't support it
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