- System: Ubuntu 18.04
- Linux Kernel Version: I tried 4.15 through 4.17
(both custom and standard repo kernels)
- Nvidia Driver: 396
- Graphics Card (GPU): Nvidia GeForce 1080
- CPU: i7-8700K (Coffeelake)
- Cuda Version: 9.1
- ocl-icd-libopencl1 Version: 2.2.11-1ubuntu1
- ocl-icd-libopencl1 Provides: libopencl-1.1-1, libopencl-1.2-1,
libopencl-2.0-1, libopencl-2.1-1, libopencl1
- clinfo Output:
Number of platforms 1
Platform Name Clover
Platform Vendor Mesa
Platform Version OpenCL 1.1 Mesa 18.1.1
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_icd
Platform Extensions function suffix MESA
Platform Name Clover
Number of devices 0
NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) Clover
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) Clover
clCreateContext(NULL, ...) [default] No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL) No devices found in platform
ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.2.11
ICD loader Profile OpenCL 2.1
I have been using OpenGL and OpenCL successfully for quite some time. However, I have not been able to use OpenCL recently. I update my system monthly. I used OpenCL successfully in May. As for June, I did not use OpenCL until this past week. I assume an update that I got in the beginning of this month is the cause (but I could be wrong). I have tried downgrading the Linux kernel (and trying various kernel versions), Nvidia drivers (390 and 396), and various graphics-related libraries without success. The output of clinfo no longer sees my Nvidia card (like it did in May).
Interestingly, OpenGL is perfectly fine. I can still use the Nvidia card for graphics rendering. The output of nvidia-smi shows my various processes running on the graphics card in graphics-mode (but no compute-mode processes).
What am I over-looking in getting OpenCL to work again?
This detail may or may not be related or provide a hint, but the output of eglinfo shows that dlopen cannot find vgem_dri.so.
