Re: [PyOpenCL] Error running demo script

[Andreas Kloeckner]

Tobias Schulmann  writes:
> So I'm trying to get pyopencl to run on Ubuntu 16.04 with latest AMD APP SDK, 
> but running into the error below when trying to run the demo script (from the 
> documentation):
>
> ```
> [0] 
> Choice [0]:0
> Set the environment variable PYOPENCL_CTX='0' to avoid being asked again.
> .Traceback (most recent call last):
>   File "./opencl.py", line 21, in 
> """).build()
>   File "env/lib/python3.5/site-packages/pyopencl/__init__.py", line 474, in 
> build
> options_bytes=options_bytes, source=self._source)
>   File "env/lib/python3.5/site-packages/pyopencl/__init__.py", line 509, in 
> _build_and_catch_errors
> raise err
> pyopencl.cffi_cl.RuntimeError: clbuildprogram failed: BUILD_PROGRAM_FAILURE - 
>
> Build on  3.9.0)' on 'Clover' at 0x22bf7c8>:
>
> :0:0: in function sum void (float addrspace(1)*, float 
> addrspace(1)*, float addrspace(1)*): unsupported call to function 
> get_local_size
> ```

Clover (Mesa's Open-source implementation of OpenCL) may not yet support
get_local_size(). I'd consider Clover to be highly experimental at this stage.
If you'd like "production-grade" support, you would need to use AMD's
video driver.

Andreas

> I'm relatively sure the SDK is installed correctly, and 
> `/opt/AMDAPPSDK-3.0/bin/x86_64/clinfo` seems to produce sensible output:
> ```
> Number of platforms:   1
>   Platform Profile:FULL_PROFILE
>   Platform Version:OpenCL 1.1 Mesa 12.1.0-devel 
> (git-f65187b 2016-09-16 xenial-oibaf-ppa)
>   Platform Name:   Clover
>   Platform Vendor: Mesa
>   Platform Extensions: cl_khr_icd
>
>
>   Platform Name:   Clover
> Number of devices: 1
>   Device Type: CL_DEVICE_TYPE_GPU
>   ..
> ```
>
> Not sure if I missed a crucial step somewhere along the way or stumbled 
> across some odd bug/incompatibility issue? Any help would be appreciated.
>
> -- Tobi

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[PyOpenCL] Error running demo script

[Tobias Schulmann]

So I'm trying to get pyopencl to run on Ubuntu 16.04 with latest AMD APP SDK, 
but running into the error below when trying to run the demo script (from the 
documentation):

```
[0] 
Choice [0]:0
Set the environment variable PYOPENCL_CTX='0' to avoid being asked again.
.Traceback (most recent call last):
  File "./opencl.py", line 21, in 
""").build()
  File "env/lib/python3.5/site-packages/pyopencl/__init__.py", line 474, in 
build
options_bytes=options_bytes, source=self._source)
  File "env/lib/python3.5/site-packages/pyopencl/__init__.py", line 509, in 
_build_and_catch_errors
raise err
pyopencl.cffi_cl.RuntimeError: clbuildprogram failed: BUILD_PROGRAM_FAILURE - 

Build on :

:0:0: in function sum void (float addrspace(1)*, float addrspace(1)*, 
float addrspace(1)*): unsupported call to function get_local_size
```

I'm relatively sure the SDK is installed correctly, and 
`/opt/AMDAPPSDK-3.0/bin/x86_64/clinfo` seems to produce sensible output:
```
Number of platforms: 1
  Platform Profile:  FULL_PROFILE
  Platform Version:  OpenCL 1.1 Mesa 12.1.0-devel 
(git-f65187b 2016-09-16 xenial-oibaf-ppa)
  Platform Name: Clover
  Platform Vendor:   Mesa
  Platform Extensions:   cl_khr_icd


  Platform Name: Clover
Number of devices:   1
  Device Type:   CL_DEVICE_TYPE_GPU
  ..
```

Not sure if I missed a crucial step somewhere along the way or stumbled across 
some odd bug/incompatibility issue? Any help would be appreciated.

-- Tobi
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