Intel® FPGA SDK for OpenCL™ Standard Edition: Best Practices Guide

ID 683176
Date 9/24/2018
Public
Document Table of Contents

7.2.2.1. Heterogeneous Memory Buffers

You can execute your kernel on an FPGA board that includes multiple global memory types, such as DDR, QDR, and on-chip RAMs.

If your FPGA board offers heterogeneous global memory types, keep in mind that they handle different memory accesses with varying efficiencies.

For example:

  • Use DDR SDRAM for long sequential accesses.
  • Use QDR SDRAM for random accesses.
  • Use on-chip RAM for random low latency accesses.

For more information on how to allocate buffers in global memory and how to modify your host application to leverage heterogeneous buffers, refer to the Specifying Buffer Location in Global Memory and Allocating OpenCL Buffer for Manual Partitioning of Global Memory sections of the Standard Edition Programming Guide.

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