Altera published their OpenCL-on-FPGA optimization guide

Reading Time: 1 minute

Altera-doc

Altera has just released their optimisation guide for OpenCL-on-FPGAs. It does not go into the howto’s of OpenCL, but assumes you have knowledge of the technology. Niether does it provide any information on the basics of Altera’s Stratix V or other FPGA.

It is the first public optimisation document, so it is appreciated to send feedback directly. Not aware what OpenCL can do on an FPGA? Watch the below video.

Subjects

The following subjects and optimisation tricks are discussed:

  • FPGA Overview
  • Pipelines
  • Good Design Practices
  • Avoid Pointer Aliasing
  • Avoid Expensive Functions
  • Avoid Work-Item ID-Dependent Backward Branching
  • Aligned Memory Allocation
  • Ensure 4-Byte Alignment for All Data Structures
  • Maintain Similar Structures for Vector Type Elements
  • Optimization of Data Processing Efficiency
  • Specify a Maximum Work-Group Size or a Required Work-Group Size
  • Loop Unrolling
  • Resource Sharing
  • Kernel Vectorization
  • Multiple Compute Units
  • Combination of Compute Unit Replication and Kernel SIMD Vectorization
  • Resource-Driven Optimization
  • Floating-Point Operations
  • Optimization of Memory Access Efficiency
  • General Guidelines on Optimizing Memory Accesses
  • Optimize Global Memory Accesses
  • Perform Kernel Computations Using Constant, Local or Private Memory
  • Single Work-Item Execution

Carefully compare these with CPU and GPU optimisation guides to be able to write more generic OpenCL code.

Download

You can download the document here.

If you have any question on OpenCL-on-FPGAs, OpenCL, generic optimisations or Altera FPGAs, feel welcomed to contact us.

 

Related Posts

14th-ieee-escience-conference

Call for speakers: IEEE eScience Conference in Amsterdam

...  the research lifecycle.We invite researchers to submit their:state-of-the-art computer science work and demonstrate ...

code-jobs

Do you want to join StreamHPC?

...  help us out.Dear developers who are good with C,C++, OpenCL/CUDA and algorithms, please take a look at the following vacancies. ...

Assessing software is never comparing apples to apples

Selecting Applications Suitable for Porting to the GPU

...  to explain which applications are suitable to be ported to OpenCL and run on GPU (or multiple GPUs). It is done by showing the ...

DOI-logo

DOI: Digital attachments for Scientific Papers

...  Xplore and ACM digital library already have the DOI on their papers, just missing the code and data. How to share research data ...