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1. Introduction to Intel® FPGA SDK for OpenCL™ Pro Edition Best Practices Guide
2. Reviewing Your Kernel's report.html File
3. OpenCL Kernel Design Concepts
4. OpenCL Kernel Design Best Practices
5. Profiling Your Kernel to Identify Performance Bottlenecks
6. Strategies for Improving Single Work-Item Kernel Performance
7. Strategies for Improving NDRange Kernel Data Processing Efficiency
8. Strategies for Improving Memory Access Efficiency
9. Strategies for Optimizing FPGA Area Usage
10. Strategies for Optimizing Intel® Stratix® 10 OpenCL Designs
11. Strategies for Improving Performance in Your Host Application
12. Intel® FPGA SDK for OpenCL™ Pro Edition Best Practices Guide Archives
A. Document Revision History for the Intel® FPGA SDK for OpenCL™ Pro Edition Best Practices Guide
2.1. High-Level Design Report Layout
2.2. Reviewing the Summary Report
2.3. Viewing Throughput Bottlenecks in the Design
2.4. Using Views
2.5. Analyzing Throughput
2.6. Reviewing Area Information
2.7. Optimizing an OpenCL Design Example Based on Information in the HTML Report
2.8. Accessing HLD FPGA Reports in JSON Format
4.1. Transferring Data Via Intel® FPGA SDK for OpenCL™ Channels or OpenCL Pipes
4.2. Unrolling Loops
4.3. Optimizing Floating-Point Operations
4.4. Allocating Aligned Memory
4.5. Aligning a Struct with or without Padding
4.6. Maintaining Similar Structures for Vector Type Elements
4.7. Avoiding Pointer Aliasing
4.8. Avoid Expensive Functions
4.9. Avoiding Work-Item ID-Dependent Backward Branching
5.1. Best Practices for Profiling Your Kernel
5.2. Instrumenting the Kernel Pipeline with Performance Counters (-profile)
5.3. Obtaining Profiling Data During Runtime
5.4. Reducing Area Resource Use While Profiling
5.5. Temporal Performance Collection
5.6. Performance Data Types
5.7. Interpreting the Profiling Information
5.8. Profiler Analyses of Example OpenCL Design Scenarios
5.9. Intel® FPGA Dynamic Profiler for OpenCL™ Limitations
8.1. General Guidelines on Optimizing Memory Accesses
8.2. Optimize Global Memory Accesses
8.3. Performing Kernel Computations Using Constant, Local or Private Memory
8.4. Improving Kernel Performance by Banking the Local Memory
8.5. Optimizing Accesses to Local Memory by Controlling the Memory Replication Factor
8.6. Minimizing the Memory Dependencies for Loop Pipelining
8.7. Static Memory Coalescing
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5.3.1.1. Splitting Execution and Data Post Processing
By default, the Profiler Runtime Wrapper automatically runs a post-processing step on your profile.mon monitor file to produce a readable profile.json file. In some situations, the post-processing step may take longer time than expected. Because of this, you can choose to separate the execution and data post-processing step into two separate manual steps. To do this, use the --no-json and --no-run <path to profile.mon file> Profiler Runtime Wrapper options.
- The --no-json flag only runs your host application and produces a profile.mon monitor file, without post-processing.
- The --no-run <path to profile.mon file> flag does not invoke your host application, instead, just calls the post-processing step on the supplied profile.mon file.
CAUTION:The Profiler Runtime Wrapper’s --no-run flow is not backwards compatible for profile.mon files created using a runtime version earlier than Intel® FPGA SDK for OpenCL™ version 20.3.