运行Bempp中Laplace_interior_dirichlet出现的问题

运行Bempp例子出现的问题

​ 在运行bempp中的laplace_interior_Diriclet的例子时，出现了如下错误：

C:\Users\lenovo\AppData\Local\Programs\Python\Python37\lib\site-packages\pyopencl\__init__.py:233: CompilerWarning: Non-empty compiler output encountered. Set the environment variable PYOPENCL_COMPILER_OUTPUT=1 to see more.
  "to see more.", CompilerWarning)

• 解决方案：添加如下代码

  os.environ['PYOPENCL_COMPILER_OUTPUT'] = '1'
  

  添加上诉代码将编译警告输出后，如下：

C:\Users\lenovo\AppData\Local\Programs\Python\Python37\lib\site-packages\pyopencl\__init__.py:229: CompilerWarning: Built kernel retrieved from cache. Original from-source build had warnings:
Build on  succeeded, but said:

Compilation started
Compilation done
Linking started
Linking done
Device build started
Device build done
Kernel  was successfully vectorized (8)
Done.===========================================================================
Build on  succeeded, but said:

fcl build 1 succeeded.
bcl build succeeded.

  warn(text, CompilerWarning)
C:\Users\lenovo\AppData\Local\Programs\Python\Python37\lib\site-packages\pyopencl\__init__.py:229: CompilerWarning: From-binary build succeeded, but resulted in non-empty logs:
Build on  succeeded, but said:

Device build started
Device build done
Reload Program Binary Object.
  warn(text, CompilerWarning)

Process finished with exit code -1073741819 (0xC0000005)

​ 程序似乎运行到此处就停止运行了，这个问题困扰了我一天，一直在排查原因所在，突然想到在命令行执行代码时需要选择opencl的运行设备。

[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-wMS3BWhe-1622100879566)(C:\Users\lenovo\AppData\Roaming\Typora\typora-user-images\image-20210527151800508.png)]

• 解决方案：添加如下代码

  os.environ['PYOPENCL_CTX'] = '1'
  

`python
os.environ[‘PYOPENCL_CTX’] = ‘1’