Kernel PLRAM Usage - 2019.2 English - UG1315

Vitis Guidance Messaging (UG1315)

Document ID
UG1315
Release Date
2019-10-30
Version
2019.2 English

Description

This rule checks buffer transfer size to the kernel and determines which ones could take advantage of PLRAMs.

Explanation

The data from host to device can be moved using global memory, or Streaming. The global memory consists of two memory resources: DDR's, PLRAM. Each of these memory has an advantage over one other. PLRAM's has the advantage of having less read/write LATENCY when using them.

Resolution

If the buffer size is less than 128 Kb, the user is recommended to use the PLRAM instead of DDR's as a global memory option.