智慧物流>> approx-fpgas>> 返回
项目作者： ehw-fit

项目描述 ：
Approximate arithmetic circuits for FPGAs
高级语言： Verilog
项目地址: git://github.com/ehw-fit/approx-fpgas.git
创建时间： 2020-02-18T08:10:45Z
项目社区：https://github.com/ehw-fit/approx-fpgas
开源协议：MIT License
下载


Approx-FPGAs

library of approximate arithmetic circuits optimized for FPGAs

This is a GitHub repository of subset of EvoApproxLib optimized for FPGAs . The library consists of hardware and software models of approximate circuits that are designed to be easily used in arbitrary application. Web-based GUI and the full version of EvoApproxLib can be found on our websites

Library usage

Reference

This library is licenced under MIT licence. If you use the library in your research, please refer the following paper:

PRABAKARAN B. S., MRAZEK V., VASICEK Z., SEKANINA L., SHAFIQUE M. ApproxFPGAs: Embracing ASIC-based Approximate Arithmetic Components for FPGA-Based Systems. The 57th Annual Design Automation Conference 2020 (DAC ‘20), 2020.

  1. @INPROCEEDINGS{approxfpgas,
  2.     author = "Bharath S. Prabakaran and Vojtech Mrazek and Zdenek Vasicek and Lukas Sekanina and Muhammad Shafique",
  3.     title = "ApproxFPGAs: Embracing ASIC-based Approximate Arithmetic Components for FPGA-Based Systems",
  4.     booktitle = "The 57th Annual Design Automation Conference 2020 (DAC '20)",
  5.     publisher = "Association for Computing Machinery",
  6.     volume={},
  7.     number={},
  8.     pages={6},
  9.     }

Usage in Python

To use the models from Python, it is possible to generate and compile binary extensions using cython.

  1. Make sure cython is installed

    1. pip install --user cython

  2. Generate cython sources (creates cython directory):

    1. python3 make_cython.py

  3. Compile and install binary extensions (*.so on linux, *.pyd on Windows):

    1. cd cython
    2. python3 setup.py build_ext
    3. python3 setup.py install --user

  4. Finally, the extension can be used in a Python script as follows:
    ```python
    import approxfpga as eal

e = 0
for i in range(0, 28):
for j in range(0, 28):
e += abs(eal.add8u_04A.calc(i, j) - (i+j))

print(‘MAE calculated’, e / (2*(28)))
print(‘MAE from lib’, eal.add8u_04A.MAE)
```

Circuits

Multipliers (unsigned)