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

ID 683846
Date 12/19/2022
Document Table of Contents

2.1. One-Step Compilation for Simple Kernels

By default, the Intel® FPGA SDK for OpenCL™ Offline Compiler compiles one or more OpenCL™ kernels and creates a hardware configuration file in a single step. Choose this compilation option if you have a single OpenCL kernel in your application, or if you have multiple kernels in your application that require minimal iterations.

The following figure illustrates the OpenCL kernel design flow that has a single compilation step.

Figure 4. One-Step OpenCL Kernel Compilation Flow

A successful compilation results in the following files and reports:

  • A .aocr file
  • A .aocx file
  • In the <your_kernel_filename>/reports/report.html file, the estimated resource usage summary provides a preliminary assessment of area usage. If you have a single work-item kernel, the optimization report identifies performance bottlenecks.
Attention: It is very time consuming to iterate on your design using the one-step compilation flow. For each iteration, you must perform a full compilation for FPGA hardware, which takes hours. Then you must execute the kernel on the FPGA to measure its performance.