- cl_int clRetainDevice(cl_device_id device);
Returns CL_SUCCESS if the function is executed successfully or the device is a root-level device. Otherwise, it returns one of the following errors:
- • CL_INVALID_DEVICE if device is not a valid sub-device created by a call to clCreateSubDevices(3clc).
- • 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.
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- page 52, section 4.3 - Partitioning a Device