ERROR: pyopencl: creating context for specific device

Question

I want to create context for specific device on my platform. But I am getting an error.

Code:

import pyopencl as cl
platform = cl.get_platforms()
dev         


        

Answer 1

According to the PyOpenCL documentation, Context takes a list of devices, not a specific device.

If you change your context creation code to this:

platform = cl.get_platforms()
my_gpu_devices = platform[0].get_devices(device_type=cl.device_type.GPU)
ctx = cl.Context(devices=my_gpu_devices)

It should work. If you really want to limit the choice to only one device, you can manipulate the my_gpu_devices list, for instance:

my_gpu_devices = [platform[0].get_devices(device_type=cl.device_type.GPU)[0]]