Chapter 3. Host programming: data transfer and partitioning
This chapter covers
- Creating memory objects to serve as kernel arguments
- Commands that transfer data between the host and a device
- Partitioning kernel execution using work-items and work-groups
The preceding chapter explained a great deal about host applications, from accessing platforms to creating kernels. But to do their jobs, devices need more than just kernels—they need data. If you want a device to perform a nontrivial computing task, you have to provide at least three pieces of information: the instructions to be executed, a buffer containing data to be processed, and a buffer where processed data should be stored.
In regular C/C++ programming, this isn’t a big deal. ...
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