OpenCL.CLException about ilgpu HOT 2 CLOSED

@fcogneaux I haven't been able to reproduce the issue.

However, that CLException that is thrown should have an Error member variable that will give you the error code from the OpenCL API. In particular, it should map to one of these error codes.

The call to Synchronize will internally call the clFinish function of OpenCL. The documentation says that clFinish can expect the following result:

 Returns CL_SUCCESS if the function call was executed successfully. Otherwise, it returns one of the following errors:

    CL_INVALID_COMMAND_QUEUE if command_queue is not a valid host command-queue.
    CL_OUT_OF_RESOURCES if there is a failure to allocate resources required by the OpenCL implementation on the device.
    CL_OUT_OF_HOST_MEMORY if there is a failure to allocate resources required by the OpenCL implementation on the host.

Let us know how you go.

from ilgpu.

Thank you for your time and you suggestion MoFtZ.

Indeed, the exception has an error code which is : -14 (CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST)

Given the context (a low powered graphic card), and accordingly to the thread posts I was able to find, it could be related to some watchdog / timeout error, raised by the hardware when a kernel takes too much time to execute.

I found a workaround by splitting the outer loop in smaller chunks before execute the kernel.

Thanks!

from ilgpu.