Dear All, I tried to render a volume graphics in my Unix workstation (512MB memory). The best resolution I can get is 128x128x128 voxels (float data type). If I try to use 256x256x256 voxels, the system gave me the "OutOfMemory" Exception. I execute my program as below: % Java -mx384m myprogram Note: I did try with different memory number such as 448, 256 etc. According to my calculation (float data is 4 bytes), memory needed should be (256 x 256 x 256 x 4) = 64MB. Can anyone help me in this context? No major programs are being executed at the background of the workstation. Thanks and have a good day for everyone.