Intel® FPGA SDK for OpenCL™ Pro Edition: Programming Guide

ID 683846
Date 10/04/2021

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7.17. Forcing a Single Store Ring to Reduce Area at the Expense of Write Throughput to Global Memory (-force-single-store-ring)

To narrow the global memory interconnect in order to save area while limiting write-only throughput to one bank's worth, use the -force-single-store-ring option in your aoc command.

When the Intel® FPGA SDK for OpenCL™ Offline Compiler implements a ring topology for the global memory interconnect (either by automatic choice or by forcing the ring through -global-ring), it widens the interconnect by default to allow more writes to occur in parallel. This allows for the saturation of global memory throughput using write-only traffic. The -force-single-store-ring option allows you to save area if you do not require that much write bandwidth.

Example: aoc -force-single-store-ring <your_kernel_filename>.cl