Buffers

In this chapter, we will learn about the buffer abstraction. We learned about Unified Shared Memory (USM), the pointer-based strategy for data management, in the previous chapter. USM forces us to think about where memory lives and what should be accessible where. The buffer abstraction is a higher-level model that hides this from the programmer. Buffers simply represent data, and it becomes the job of the runtime to manage how the data is stored and moved in memory.