Minimize the Number of Data Transfers from Global Memory - 2021.2 English

Vitis Unified Software Platform Documentation: Application Acceleration Development (UG1393)

Document ID
UG1393
ft:locale
English (United States)
Release Date
2021-12-15
Version
2021.2 English

Since accesses to global memory can add significant latency to the application, only make necessary transfers.

The guideline is to only read and write the necessary values, and only do so once. In situations where the same value must be used several times by the compute function, buffer this value locally instead of reading it from global memory again. Coding the proper buffering and caching structure can be key to achieving the throughput goal.