I have an OpenGL program to generate screen plots based on data file. Since there are lots of data files need to be processed. I'm thinking use qsub with option -X (ForwardingX11), -t ( job array ). Every thing works fine at first. Each cpu will read a data file and process it. However when the code gets to the OpenGL code line.
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_ALPHA | GLUT_DEPTH);
glutInitWindowSize(WindowWidth, WindowHeight);
The program breaks down and produce a qsub error file like "freeglut (./video): failed to open display '' And one more thing is, when I use echo $DISPLAY in my qsub script, it prints nothing. When I ssh -Y into the compute-node, I could generate OpenGL plot. So I guess the issue comes from qsub -X command. Does anyone have experience using qsub to generate multiple OpenGL plots?
