Invalid context for GL
by mt
Hi,
I'm trying to access GL textures from pyopencl. Here is my test program:
import sys, os, pygame
from OpenGL.GL import *
sys.path.append("extern/pyopencl/build/lib.linux-x86_64-2.6")
import pyopencl
pygame.init()
screen = pygame.display.set_mode((1024, 768), pygame.HWSURFACE |
pygame.OPENGL | pygame.DOUBLEBUF)
if pyopencl.have_gl():
context = pyopencl.create_some_context()
tex = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, tex)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, GL_RGBA,
GL_UNSIGNED_BYTE, None)
cltex = pyopencl.GLTexture(context, pyopencl.mem_flags.READ_ONLY,
GL_TEXTURE_2D, 0, tex, 2)
It fails with error:
Traceback (most recent call last):
File "cl.py", line 14, in <module>
cltex = pyopencl.GLTexture(context, pyopencl.mem_flags.READ_ONLY,
GL_TEXTURE_2D, 0, tex, 2)
pyopencl.LogicError: clCreateFromGLTexture2D failed: invalid context
I thought that the problem might be in pyopencl's context creation,
which doesn't take the GL context into account. I tried to fix it by
adding appropriate CL_GL_CONTEXT_KHR, CL_GLX_DISPLAY_KHR and
CL_CONTEXT_PLATFORM props to the context, but then I got another error
"pyopencl.LogicError: clCreateFromGLTexture2D failed: invalid value". I
can run kernels just fine with my setup, but this GL stuff won't work.
What am I doing wrong?
7 years, 8 months
PyOpenCL cannot find Tesla S2050 device
by Riaan van den Dool
Hi
We have recently acquired an NVIDIA Tesla s2050 device for image processing
at work.
I have used PyOpenCL before on my laptop and know the basics. After
installing PyOpenCL on the host server (hosting the s2050 device)
successfully I get the following result when trying to create a context:
Python 2.6.5 (r265:79063, Apr 16 2010, 13:57:41)
[GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyopencl as cl
>>> cl.create_some_context()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.6/dist-packages/pyopencl/__init__.py", line
327, in create_some_context
platforms = get_platforms()
pyopencl.LogicError: clGetPlatformIDs failed: invalid/unknown error code
As a sanity check I installed PyCUDA as well on the same machine and again I
get an error:
Python 2.6.5 (r265:79063, Apr 16 2010, 13:57:41)
[GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pycuda.autoinit
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File
"/usr/local/lib/python2.6/dist-packages/pycuda-0.94.2-py2.6-linux-x86_64.egg/pycuda/autoinit.py",
line 4, in <module>
cuda.init()
pycuda._driver.RuntimeError: cuInit failed: no device
Does anyone know what else I can try, other than installing the latest
NVIDIA development drivers and the latest CUDA toolkit? (which I have done)
Riaan
7 years, 8 months
Whoa...shared contexts work now!
by Keith Brafford
I don't know what got done, but I did a git pull:
C:\Users\Keith\Desktop\pyopencl\pyopencl>git pull
>From http://git.tiker.net/trees/pyopencl
c91a092..cffa356 master -> origin/master
Updating c91a092..cffa356
Fast-forward
pyopencl/__init__.py | 14 +++++++++++++-
1 files changed, 13 insertions(+), 1 deletions(-)
and rebuilt my pyopencl on my ATI HD5870 computer, and it works now!
If it really isn't a pyopencl thing, is it possible that I installed some
windows update that I don't know about that somehow magically helped me?
--Keith Brafford
8 years
OpenGL interop on Mac OS X patch
by Ian Johnson
Hello,
first off I would like to say PyOpenCL rocks! I <3 python and I've already
converted one of my C++ OpenCL tutorials over and its so much cleaner :)
My problem is that I use the Mac a lot, and PyOpenCL doesn't support OpenGL
context sharing, so I decided to add it. I don't think my way of adding it
is the cleanest, because I just added a #ifdef __APPLE__ in create_context
which will go ahead and create from an OpenGL context if no devices are
passed in (instead of using createContextFromType) as demonstrated in this
pdf:
http://sa10.idav.ucdavis.edu/docs/sa10-dg-opencl-gl-interop.pdf
In my limited (and 1.0) experience the two cases on a mac are where you
choose a device (either gpu or cpu) and don't share with GL, or you do this
very specific command for creating from GL context (no other combination of
standard createContext calls seem to work for GL sharing)
I have attached my git diff (only a few lines in wrap_cl.hpp and
gl_interop_demo.py) and the demo works on my mac!
Also as a side note, when building from git doing
git submodule init
git submodule update
did not seem to get all of the dependencies for pyopencl (it was missing
ptr_container) so I manually pulled from bpl-subset.git and replaced the
bpl-subset folder inside pyopencl
--
Ian Johnson
http://enja.org
8 years
Learning OpenCL through PyOpenCL
by Patric Holmvall
Dear mailing list recipients,
I'm currently working on my bachelor project where I am to do heavy
calculations that are very suited for parallel computation (quantum field
theory using path integrals and markov chain montecarlo). This will be done
with OpenCL in Python, thus using PyOpenCL. This is a quite problematic
approach though since I'm new to both OpenCL and Python. Why? Because
PyOpenCL is a shortcut that blocks me from directly applying 99% of all the
material/tutorials online, since they follow implementation of OpenCL in a C
environment. For every thing I learn about OpenCL, I have to "translate" it
to PyOpenCL. It is possible with this approach, however it feels like a very
slow progress that takes a lot of effort. Since I can't seem to find any
tutorials on learning OpenCL through PyOpenCL on the web, I wonder if anyone
on the mailing list knows of such tutorials? Learning Python isn't the issue
here, and the approach isn't up for change. The question is HOW I'm going to
learn/do this approach in an efficient way.
Thank you for your time!
Yours sincerely,
Patric
8 years
Still can't share contexts with gl from windows machine
by Keith Brafford
I just rebuilt PyOpenCL from the latest code in the git repo. This same code
works fine on my mac.
Here's my siteconf.py file, with GL set to True:
BOOST_INC_DIR = ['F:\\Program Files (x86)\\boost\\boost_1_39']
BOOST_LIB_DIR = ['F:\\Program Files (x86)\\boost\\boost_1_39\\lib']
BOOST_COMPILER = 'msvc'
BOOST_PYTHON_LIBNAME = ['boost_python-vc90-mt-1_39']
USE_SHIPPED_BOOST = False
CL_TRACE = False
CL_ENABLE_GL = True
CL_INC_DIR = ['C:\\Program Files (x86)\\ATI Stream\\include',
'C:\\Program Files (x86)\\ATI Stream\\include\\CL']
CL_LIB_DIR = ['C:\\Program Files (x86)\\ATI Stream\\lib\\x86']
CL_LIBNAME = ['OpenCL']
CXXFLAGS = ['/EHsc','/DBOOST_PYTHON_NO_PY_SIGNATURES']
LDFLAGS = ['/FORCE']
Here's the output of the build procedure:
C:\Users\Keith\Desktop\pyopencl\pyopencl>python setup.py install
running install
install_dir C:\Python26\Lib\site-packages\
running bdist_egg
running egg_info
writing requirements to pyopencl.egg-info\requires.txt
writing pyopencl.egg-info\PKG-INFO
writing top-level names to pyopencl.egg-info\top_level.txt
writing dependency_links to pyopencl.egg-info\dependency_links.txt
writing requirements to pyopencl.egg-info\requires.txt
writing pyopencl.egg-info\PKG-INFO
writing top-level names to pyopencl.egg-info\top_level.txt
writing dependency_links to pyopencl.egg-info\dependency_links.txt
reading manifest file 'pyopencl.egg-info\SOURCES.txt'
reading manifest template 'MANIFEST.in'
writing manifest file 'pyopencl.egg-info\SOURCES.txt'
installing library code to build\bdist.win32\egg
running install_lib
running build_py
creating build\lib.win32-2.6
creating build\lib.win32-2.6\pyopencl
copying pyopencl\array.py -> build\lib.win32-2.6\pyopencl
copying pyopencl\clmath.py -> build\lib.win32-2.6\pyopencl
copying pyopencl\clrandom.py -> build\lib.win32-2.6\pyopencl
copying pyopencl\elementwise.py -> build\lib.win32-2.6\pyopencl
copying pyopencl\reduction.py -> build\lib.win32-2.6\pyopencl
copying pyopencl\tools.py -> build\lib.win32-2.6\pyopencl
copying pyopencl\version.py -> build\lib.win32-2.6\pyopencl
copying pyopencl\__init__.py -> build\lib.win32-2.6\pyopencl
running build_ext
building '_cl' extension
creating build\temp.win32-2.6
creating build\temp.win32-2.6\Release
creating build\temp.win32-2.6\Release\src
creating build\temp.win32-2.6\Release\src\wrapper
F:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\cl.exe /c /nologo /Ox
/MD /W3 /GS- /DNDEBUG -DPYGPU_PACKAGE=pyopencl -DPYG
PU_PYOPENCL=1 -DHAVE_GL=1 -Isrc/cpp "-IF:\Program Files (x86)\boost\boost_1_39"
"-IC:\Program Files (x86)\ATI Stream\include" "-IC:\
Program Files (x86)\ATI Stream\include\CL"
-IC:\Python26\lib\site-packages\numpy\core\include -IC:\Python26\include
-IC:\Python26\PC
/Tpsrc/wrapper/wrap_cl.cpp
/Fobuild\temp.win32-2.6\Release\src/wrapper/wrap_cl.obj /EHsc
/DBOOST_PYTHON_NO_PY_SIGNATURES
wrap_cl.cpp
c:\users\keith\desktop\pyopencl\pyopencl\src\wrapper\wrap_cl.hpp(3150) :
warning C4018: '>' : signed/unsigned mismatch
F:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\cl.exe /c /nologo /Ox
/MD /W3 /GS- /DNDEBUG -DPYGPU_PACKAGE=pyopencl -DPYG
PU_PYOPENCL=1 -DHAVE_GL=1 -Isrc/cpp "-IF:\Program Files (x86)\boost\boost_1_39"
"-IC:\Program Files (x86)\ATI Stream\include" "-IC:\
Program Files (x86)\ATI Stream\include\CL"
-IC:\Python26\lib\site-packages\numpy\core\include -IC:\Python26\include
-IC:\Python26\PC
/Tpsrc/wrapper/wrap_cl_part_1.cpp
/Fobuild\temp.win32-2.6\Release\src/wrapper/wrap_cl_part_1.obj /EHsc
/DBOOST_PYTHON_NO_PY_SIGNATU
RES
wrap_cl_part_1.cpp
c:\users\keith\desktop\pyopencl\pyopencl\src\wrapper\wrap_cl.hpp(3150) :
warning C4018: '>' : signed/unsigned mismatch
F:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\cl.exe /c /nologo /Ox
/MD /W3 /GS- /DNDEBUG -DPYGPU_PACKAGE=pyopencl -DPYG
PU_PYOPENCL=1 -DHAVE_GL=1 -Isrc/cpp "-IF:\Program Files (x86)\boost\boost_1_39"
"-IC:\Program Files (x86)\ATI Stream\include" "-IC:\
Program Files (x86)\ATI Stream\include\CL"
-IC:\Python26\lib\site-packages\numpy\core\include -IC:\Python26\include
-IC:\Python26\PC
/Tpsrc/wrapper/wrap_cl_part_2.cpp
/Fobuild\temp.win32-2.6\Release\src/wrapper/wrap_cl_part_2.obj /EHsc
/DBOOST_PYTHON_NO_PY_SIGNATU
RES
wrap_cl_part_2.cpp
c:\users\keith\desktop\pyopencl\pyopencl\src\wrapper\wrap_cl.hpp(3150) :
warning C4018: '>' : signed/unsigned mismatch
F:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\cl.exe /c /nologo /Ox
/MD /W3 /GS- /DNDEBUG -DPYGPU_PACKAGE=pyopencl -DPYG
PU_PYOPENCL=1 -DHAVE_GL=1 -Isrc/cpp "-IF:\Program Files (x86)\boost\boost_1_39"
"-IC:\Program Files (x86)\ATI Stream\include" "-IC:\
Program Files (x86)\ATI Stream\include\CL"
-IC:\Python26\lib\site-packages\numpy\core\include -IC:\Python26\include
-IC:\Python26\PC
/Tpsrc/wrapper/wrap_constants.cpp
/Fobuild\temp.win32-2.6\Release\src/wrapper/wrap_constants.obj /EHsc
/DBOOST_PYTHON_NO_PY_SIGNATU
RES
wrap_constants.cpp
c:\users\keith\desktop\pyopencl\pyopencl\src\wrapper\wrap_cl.hpp(3150) :
warning C4018: '>' : signed/unsigned mismatch
F:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\cl.exe /c /nologo /Ox
/MD /W3 /GS- /DNDEBUG -DPYGPU_PACKAGE=pyopencl -DPYG
PU_PYOPENCL=1 -DHAVE_GL=1 -Isrc/cpp "-IF:\Program Files (x86)\boost\boost_1_39"
"-IC:\Program Files (x86)\ATI Stream\include" "-IC:\
Program Files (x86)\ATI Stream\include\CL"
-IC:\Python26\lib\site-packages\numpy\core\include -IC:\Python26\include
-IC:\Python26\PC
/Tpsrc/wrapper/wrap_mempool.cpp
/Fobuild\temp.win32-2.6\Release\src/wrapper/wrap_mempool.obj /EHsc
/DBOOST_PYTHON_NO_PY_SIGNATURES
wrap_mempool.cpp
c:\users\keith\desktop\pyopencl\pyopencl\src\wrapper\wrap_cl.hpp(3150) :
warning C4018: '>' : signed/unsigned mismatch
c:\users\keith\desktop\pyopencl\pyopencl\src\wrapper\bitlog.hpp(35) : warning
C4244: 'argument' : conversion from 'boost::uint32_t'
to 'boost::uint16_t', possible loss of data
F:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\cl.exe /c /nologo /Ox
/MD /W3 /GS- /DNDEBUG -DPYGPU_PACKAGE=pyopencl -DPYG
PU_PYOPENCL=1 -DHAVE_GL=1 -Isrc/cpp "-IF:\Program Files (x86)\boost\boost_1_39"
"-IC:\Program Files (x86)\ATI Stream\include" "-IC:\
Program Files (x86)\ATI Stream\include\CL"
-IC:\Python26\lib\site-packages\numpy\core\include -IC:\Python26\include
-IC:\Python26\PC
/Tpsrc/wrapper/bitlog.cpp
/Fobuild\temp.win32-2.6\Release\src/wrapper/bitlog.obj /EHsc
/DBOOST_PYTHON_NO_PY_SIGNATURES
bitlog.cpp
c:\users\keith\desktop\pyopencl\pyopencl\src\wrapper\bitlog.hpp(35) : warning
C4244: 'argument' : conversion from 'boost::uint32_t'
to 'boost::uint16_t', possible loss of data
F:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\link.exe /DLL /nologo
/INCREMENTAL:NO "/LIBPATH:F:\Program Files (x86)\boo
st\boost_1_39\lib" "/LIBPATH:C:\Program Files (x86)\ATI Stream\lib\x86"
/LIBPATH:C:\Python26\libs /LIBPATH:C:\Python26\PCbuild boost
_python-vc90-mt-1_39.lib OpenCL.lib /EXPORT:init_cl
build\temp.win32-2.6\Release\src/wrapper/wrap_cl.obj build\temp.win32-2.6\Relea
se\src/wrapper/wrap_cl_part_1.obj
build\temp.win32-2.6\Release\src/wrapper/wrap_cl_part_2.obj
build\temp.win32-2.6\Release\src/wrappe
r/wrap_constants.obj build\temp.win32-2.6\Release\src/wrapper/wrap_mempool.obj
build\temp.win32-2.6\Release\src/wrapper/bitlog.obj /
OUT:build\lib.win32-2.6\pyopencl\_cl.pyd
/IMPLIB:build\temp.win32-2.6\Release\src/wrapper\_cl.lib
/MANIFESTFILE:build\temp.win32-2.6
\Release\src/wrapper\_cl.pyd.manifest /FORCE
Creating library build\temp.win32-2.6\Release\src/wrapper\_cl.lib and object
build\temp.win32-2.6\Release\src/wrapper\_cl.exp
C:\Program Files\Microsoft SDKs\Windows\v6.0A\bin\mt.exe -nologo -manifest
build\temp.win32-2.6\Release\src/wrapper\_cl.pyd.manifest
-outputresource:build\lib.win32-2.6\pyopencl\_cl.pyd;2
creating build\bdist.win32
creating build\bdist.win32\egg
creating build\bdist.win32\egg\pyopencl
copying build\lib.win32-2.6\pyopencl\array.py -> build\bdist.win32\egg\pyopencl
copying build\lib.win32-2.6\pyopencl\clmath.py -> build\bdist.win32\egg\pyopencl
copying build\lib.win32-2.6\pyopencl\clrandom.py -> build\bdist.win32\egg
\pyopencl
copying build\lib.win32-2.6\pyopencl\elementwise.py ->
build\bdist.win32\egg\pyopencl
copying build\lib.win32-2.6\pyopencl\reduction.py -> build\bdist.win32\egg
\pyopencl
copying build\lib.win32-2.6\pyopencl\tools.py -> build\bdist.win32\egg
\pyopencl
copying build\lib.win32-2.6\pyopencl\version.py -> build\bdist.win32\egg
\pyopencl
copying build\lib.win32-2.6\pyopencl\_cl.pyd -> build\bdist.win32\egg\pyopencl
copying build\lib.win32-2.6\pyopencl\__init__.py -> build\bdist.win32\egg
\pyopencl
byte-compiling build\bdist.win32\egg\pyopencl\array.py to array.pyc
byte-compiling build\bdist.win32\egg\pyopencl\clmath.py to clmath.pyc
byte-compiling build\bdist.win32\egg\pyopencl\clrandom.py to clrandom.pyc
byte-compiling build\bdist.win32\egg\pyopencl\elementwise.py to elementwise.pyc
byte-compiling build\bdist.win32\egg\pyopencl\reduction.py to reduction.pyc
byte-compiling build\bdist.win32\egg\pyopencl\tools.py to tools.pyc
byte-compiling build\bdist.win32\egg\pyopencl\version.py to version.pyc
byte-compiling build\bdist.win32\egg\pyopencl\__init__.py to __init__.pyc
creating stub loader for pyopencl\_cl.pyd
byte-compiling build\bdist.win32\egg\pyopencl\_cl.py to _cl.pyc
creating build\bdist.win32\egg\EGG-INFO
copying pyopencl.egg-info\PKG-INFO -> build\bdist.win32\egg\EGG-INFO
copying pyopencl.egg-info\SOURCES.txt -> build\bdist.win32\egg\EGG-INFO
copying pyopencl.egg-info\dependency_links.txt -> build\bdist.win32\egg
\EGG-INFO
copying pyopencl.egg-info\requires.txt -> build\bdist.win32\egg\EGG-INFO
copying pyopencl.egg-info\top_level.txt -> build\bdist.win32\egg\EGG-INFO
writing build\bdist.win32\egg\EGG-INFO\native_libs.txt
zip_safe flag not set; analyzing archive contents...
creating 'dist\pyopencl-2011.1beta3-py2.6-win32.egg' and adding
'build\bdist.win32\egg' to it
removing 'build\bdist.win32\egg' (and everything under it)
Processing pyopencl-2011.1beta3-py2.6-win32.egg
creating c:\python26\lib\site-packages\pyopencl-2011.1beta3-py2.6-win32.egg
Extracting pyopencl-2011.1beta3-py2.6-win32.egg to c:\python26\lib
\site-packages
Adding pyopencl 2011.1beta3 to easy-install.pth file
Installed c:\python26\lib\site-packages\pyopencl-2011.1beta3-py2.6-win32.egg
Processing dependencies for pyopencl==2011.1beta3
Searching for decorator==3.3.0
Best match: decorator 3.3.0
Processing decorator-3.3.0-py2.6.egg
decorator 3.3.0 is already the active version in easy-install.pth
Using c:\python26\lib\site-packages\decorator-3.3.0-py2.6.egg
Searching for py==1.4.0
Best match: py 1.4.0
Processing py-1.4.0-py2.6.egg
py 1.4.0 is already the active version in easy-install.pth
Using c:\python26\lib\site-packages\py-1.4.0-py2.6.egg
Searching for pytools==11
Best match: pytools 11
Processing pytools-11-py2.6.egg
pytools 11 is already the active version in easy-install.pth
Installing logtool script to C:\Python26\Scripts
Installing runalyzer script to C:\Python26\Scripts
Installing runalyzer-gather script to C:\Python26\Scripts
Using c:\python26\lib\site-packages\pytools-11-py2.6.egg
Finished processing dependencies for pyopencl==2011.1beta3
And here's the failure when I try to run the gl shared context sample:
C:\Users\Keith\Desktop\pyopencl\pyopencl\examples>python gl_interop_demo.py
Traceback (most recent call last):
File "gl_interop_demo.py", line 73, in <module>
initialize()
File "gl_interop_demo.py", line 34, in initialize
+ get_gl_sharing_context_properties())
pyopencl.LogicError: Context failed: invalid gl sharegroup reference number
-------
The ATI C samples that use shared context (the BoxFilterGL and the other one
with vertex buffer shared) work fine. Clearly I am getting something wrong
with this tiny piece of Pyopencl. Can anyone see what is going on with my
system?
--Keith Brafford
8 years, 1 month
Has anyone ever gotten PyOpenCL to work with ATI+Windows7+Shared GL contexts?
by Keith Brafford
My trouble getting PyOpenCL to work on either of my two PCs had me wondering if
I am the only person to try it on the type of machines that I have. So, has
anyone out there actually gotten PyOpenCL to run the gl_interop example with the
following configuration:
1) ATI OpenCL (cpu or gpu device)
2) Windows 7 64-bit
--Keith Brafford
8 years, 1 month
import problem fixed
by Role François
Your suggestion helped me fix the problem.
Many thanks,
François
8 years, 1 month
libOpenCL.so - import error
by Role François
Hello,
I followed http://wiki.tiker.net/PyOpenCL/Installation/Linux/Ubuntu and
seemed to sucessufully install pyopencl.
Numpy and boost are also installed and I am running Ubuntu 9.10.
However, when writing :
import pyopencl._cl as _cl
I get the following error message :
...ImportError: libOpenCL.so: cannot open shared object file: No such file
or directory
- My LD_LIBRARY_PATH seems to be ok :
/usr/local/lib:/home/froloe/tools/opencl/ati-stream-sdk-v2.2-lnx32/lib/x86:
- ldd _cl.so indicates :
libOpenCL.so =>
/home/froloe/tools/opencl/ati-stream-sdk-v2.2-lnx32/lib/x86/libOpenCL.so
(0xb7772000)
Many thanks in advance for any clue you can give me,
François
8 years, 1 month
