Kernel Buffer PLRAM Usage - 2022.2 English

Vitis Guidance Messaging (UG1315)

Document ID
UG1315
Release Date
2022-10-19
Version
2022.2 English

Description

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

Explanation

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

Resolution

If the buffer size is less than 512 Kb, Xilinx recommends using the PLRAM instead of DDR memory as a global memory option.