Rendering problem

[Shubhendu-Jena]

Hi,

Thanks for your great work! I tried training the network from scratch and despite my best efforts, a bug seems to persist on my side. It seems the in render.py (/npbg/npbg/gl/render.py), lines 53 and 83 (self.fbo.activate() and self.fbo.deactivate() respectively) seem to create a problem. I get the following error :

File "/media/shubhendujena/3E08E5152BF3ABC4/nvs_experiments/npbg_try/npbg/gl/render.py", line 54, in render self.fbo.activate() File "/home/shubhendujena/anaconda3/envs/npbg/lib/python3.6/site-packages/glumpy/gloo/globject.py", line 95, in activate self._activate() File "/home/shubhendujena/anaconda3/envs/npbg/lib/python3.6/site-packages/glumpy/gloo/framebuffer.py", line 375, in _activate gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, self._handle) File "src/errorchecker.pyx", line 53, in OpenGL_accelerate.errorchecker._ErrorChecker.glCheckError OpenGL.error.GLError: GLError( err = 1282, description = b'invalid operation', baseOperation = glBindFramebuffer, cArguments = (GL_FRAMEBUFFER, 1) ) deleting buffers... Exception ignored in: <bound method NNScene.del of <npbg.gl.programs.NNScene object at 0x7f19b91bac18>> Traceback (most recent call last): File "/media/shubhendujena/3E08E5152BF3ABC4/nvs_experiments/npbg_try/npbg/gl/programs.py", line 287, in del File "/media/shubhendujena/3E08E5152BF3ABC4/nvs_experiments/npbg_try/npbg/gl/programs.py", line 292, in delete File "src/latebind.pyx", line 32, in OpenGL_accelerate.latebind.LateBind.call File "src/wrapper.pyx", line 311, in OpenGL_accelerate.wrapper.Wrapper.call File "/home/shubhendujena/anaconda3/envs/npbg/lib/python3.6/site-packages/OpenGL/platform/baseplatform.py", line 401, in call File "/home/shubhendujena/anaconda3/envs/npbg/lib/python3.6/site-packages/OpenGL/platform/baseplatform.py", line 381, in load ImportError: sys.meta_path is None, Python is likely shutting down deleting buffers... Exception ignored in: <bound method NNScene.del of <npbg.gl.programs.NNScene object at 0x7f19b922c908>> Traceback (most recent call last): File "/media/shubhendujena/3E08E5152BF3ABC4/nvs_experiments/npbg_try/npbg/gl/programs.py", line 287, in del File "/media/shubhendujena/3E08E5152BF3ABC4/nvs_experiments/npbg_try/npbg/gl/programs.py", line 292, in delete File "src/latebind.pyx", line 32, in OpenGL_accelerate.latebind.LateBind.call File "src/wrapper.pyx", line 311, in OpenGL_accelerate.wrapper.Wrapper.call File "/home/shubhendujena/anaconda3/envs/npbg/lib/python3.6/site-packages/OpenGL/platform/baseplatform.py", line 401, in call File "/home/shubhendujena/anaconda3/envs/npbg/lib/python3.6/site-packages/OpenGL/platform/baseplatform.py", line 381, in load ImportError: sys.meta_path is None, Python is likely shutting down deleting buffers... Exception ignored in: <bound method NNScene.del of <npbg.gl.programs.NNScene object at 0x7f19b922c048>> Traceback (most recent call last): File "/media/shubhendujena/3E08E5152BF3ABC4/nvs_experiments/npbg_try/npbg/gl/programs.py", line 287, in del File "/media/shubhendujena/3E08E5152BF3ABC4/nvs_experiments/npbg_try/npbg/gl/programs.py", line 292, in delete File "src/latebind.pyx", line 32, in OpenGL_accelerate.latebind.LateBind.call File "src/wrapper.pyx", line 311, in OpenGL_accelerate.wrapper.Wrapper.call File "/home/shubhendujena/anaconda3/envs/npbg/lib/python3.6/site-packages/OpenGL/platform/baseplatform.py", line 401, in call File "/home/shubhendujena/anaconda3/envs/npbg/lib/python3.6/site-packages/OpenGL/platform/baseplatform.py", line 381, in load ImportError: sys.meta_path is None, Python is likely shutting down deleting buffers... Exception ignored in: <bound method NNScene.del of <npbg.gl.programs.NNScene object at 0x7f19b91d4f28>> Traceback (most recent call last): File "/media/shubhendujena/3E08E5152BF3ABC4/nvs_experiments/npbg_try/npbg/gl/programs.py", line 287, in del File "/media/shubhendujena/3E08E5152BF3ABC4/nvs_experiments/npbg_try/npbg/gl/programs.py", line 292, in delete File "src/latebind.pyx", line 32, in OpenGL_accelerate.latebind.LateBind.call File "src/wrapper.pyx", line 311, in OpenGL_accelerate.wrapper.Wrapper.call File "/home/shubhendujena/anaconda3/envs/npbg/lib/python3.6/site-packages/OpenGL/platform/baseplatform.py", line 401, in call File "/home/shubhendujena/anaconda3/envs/npbg/lib/python3.6/site-packages/OpenGL/platform/baseplatform.py", line 381, in load ImportError: sys.meta_path is None, Python is likely shutting down

It goes away if I comment out these lines but then I get a bunch of windows opening every few steps. I'd be grateful if you could give me some tips on how I can go about resolving this.

Thanks in advance

[seva100]

Hi @Shubhendu-Jena, thanks for appreciating our work! We have never stumped upon such an exception unfortunately. Based on what I've been able to google about it, you might want to try adding some time.sleep(...) calls in the end of the program or before the important lines of code.

[Shubhendu-Jena]

Hi @seva100, thanks for the quick response. While adding time.sleep(...) didn't solve the problem, I followed this (https://stackoverflow.com/questions/51918633/importerror-failed-to-load-glfw3-shared-library-without-root-access-on-linux) and it solved the issue. Thanks again.