CUDA Runtime API support #1171
Description
CUDA Runtime API support
Rationale
Some applications are written on pure CUDA Runtime API without using Driver API. But currently UMF requires to provide cuda context and device from Driver API to create UMF CUDA provider. Runtime API does not have any contexts and device datatype is different.
Description
As a possible solution device and context values can be initialized in umfCUDAMemoryProviderParamsCreate with the "current" values. It will allow to support CUDA Runtime and Driver API at the same time. In this case an application will need just to call umfCUDAMemoryProviderParamsCreate -> umfCUDAMemoryProviderOps -> umfMemoryProviderCreate.
CUresult cuCtxGetCurrent ( CUcontext* pctx )
Returns the CUDA context bound to the calling CPU thread.
CUresult cuCtxGetDevice ( CUdevice* device )
Returns the device handle for the current context.