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Hello, glut is an unfortunate library that was added to the OpenGL stew to provide some very basic text handling (because OpenGL unbelievably ignored normal text) and a few other things. (Analysis just uses it for the text handling.) Many of the problems we have had with OpenGL in the past have been down to glut. Wayne On Thu, 21 Jun 2007, Marco Roeben wrote: > On Wednesday 20 June 2007 21:23, Brian Smith wrote: > > > And one other thing worth noting, your output says: > > > > > > OpenGL version string: 1.3 Mesa 6.4.2 > > > > > > and if that is really the case then there is no real advantage to using > > > OpenGL over Tk. > > > > Not neccessarily true. From Marco's lspci output you can see that he is > > using an Intel graphics adaptor for which direct rendering is suported in > > by the open source Mesa drivers. > > So in my case there could be a small chance to have an advantage by using > OpenGL. > > > > > A couple of common OpenGL problems. There are two flags in > > > environment.txt that can cause problems, GLUT_NEED_INIT and GL_FLAG. > > > Unfortunately OpenGL doesn't respond gracefully if you choose the wrong > > > options here, it just crashes. Each of those has two options so in > > > theory there are four options total to try (via "make clean" and "make"). > > > > certainly worth trying. > > I think I will try these options. I will report the results, but it could take > some time because there's a bunch of work I have to finish before. > > > > > But that might not be the problem. It could be that a different glut is > > > being picked up at runtime than was used at compile time. > > > > which you can check using > > > > /usr/sbin/lsof -p <pid of analysis python process> > > I don't know that much about these things. What is a glut? > > > > Another possibility with your graphics adapter, which I guess is one of > > those critters with a limited amount of its own memory that then steals > > from the main RAM, is that you are hitting some problem to do with that > > that has not been seen yet. Could be worth trying to start analysis with > > the memory usage throttled right down (-m flag if I remember) - this would > > not be a long term solution, but might help to identify the problem. > > So the best long term solution would be to buy a good graphic card, right? > Would you prefer nvidia oder ati? I think the linux nvidia driver is more > advanced than the one from ati. > > best regards > > Marco > > -- > Dipl. Chem. Marco Röben > Leibniz-Institut für Molekulare Pharmakologie Berlin (FMP) > Abt.: NMR-unterstützte Strukturforschung > Robert-Rössle-Str. 10 > D-13125 Berlin > Tel: 030-94793224 > Fax: 030-94793169 > mail: [log in to unmask] >