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listShow Lessons List
  1. What is SYCL
  2. Enqueueing a Kernel
  3. Managing Data
  4. Handling Errors
  5. Device Discovery
  6. Data Parallelism
  7. Introduction to USM
  8. Using USM
  9. Asynchronous Execution
  10. Data and Dependencies
  11. In Order Queue
  12. Advanced Data Flow
  13. Multiple Devices
  14. ND Range Kernels
  15. Image Convolution
  16. Coalesced Global Memory
  17. Vectors
  18. Local Memory Tiling
  19. Further Optimisations
  20. Matrix Transpose
  21. More SYCL Features
  22. Functors
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Further Optimisations

In this exercise you will learn how to use different work-group sizes in order to compare the performance difference.

1.) Try different work-group sizes

In order to optimize for occupancy try different work-group sizes, by specifying a different local range for the nd_range.

Note that if the work-group size exceeds the maximum work-group size the target device supports then it will fail to execute.

Compare the performance of the various work-group sizes you try.

Build and execution hints

For DevCloud via JupiterLab follow these instructions.

For DPC++: instructions.

For AdaptiveCpp: instructions.