How to create a CUDA context?

by

The canonical way to force runtime API context establishment is to call cudaFree(0). If you have multiple devices, call cudaSetDevice() with the ID of the device you want to establish a context on, then cudaFree(0) to establish the context.

EDIT: Note that as of CUDA 5.0, it appears that the heuristics of context establishment are slightly different and cudaSetDevice() itself establishes context on the device is it called on. So the explicit cudaFree(0) call is no longer necessary (although it won’t hurt anything).

More Related Contents:

  1. Unspecified launch failure on Memcpy
  2. Different CUDA versions shown by nvcc and NVIDIA-smi
  3. Thrust inside user written kernels
  4. Modifying registry to increase GPU timeout, windows 7
  5. Understanding CUDA grid dimensions, block dimensions and threads organization (simple explanation) [closed]
  6. What is the purpose of using multiple “arch” flags in Nvidia’s NVCC compiler?
  7. How are 2D / 3D CUDA blocks divided into warps?
  8. What can I do against ‘CUDA driver version is insufficient for CUDA runtime version’?
  9. What is a bank conflict? (Doing Cuda/OpenCL programming)
  10. nvidia-smi Volatile GPU-Utilization explanation?
  11. Can anyone provide sample code demonstrating the use of 16 bit floating point in cuda?
  12. Any particular function to initialize GPU other than the first cudaMalloc call?
  13. CUDA and nvcc: using the preprocessor to choose between float or double
  14. Polymorphism and derived classes in CUDA / CUDA Thrust
  15. CUDA: How many concurrent threads in total?
  16. CUDA apps time out & fail after several seconds – how to work around this?
  17. How do I select which GPU to run a job on?
  18. multi-GPU basic usage
  19. Reset Cuda Context after exception
  20. device function pointers
  21. How can I make tensorflow run on a GPU with capability 2.x?
  22. cudaMemset() – does it set bytes or integers?
  23. How to implement device side CUDA virtual functions?
  24. Why does my CUDA kernel crash (unspecified launch failure) with a different dataset size?
  25. CUDA determining threads per block, blocks per grid
  26. How does CUDA assign device IDs to GPUs?
  27. How to disable a specific nvcc compiler warnings
  28. CUDA function pointers
  29. Using an array of device function pointers
  30. “invalid configuration argument ” error for the call of CUDA kernel?

Leave a Comment