Good day everyone,

I have a strange memory limitation problem: I have GeForce GTX 580 (driver version 296.10) with 3Gb of memory, still I get a gl_out_of_memory error while using a glTexImage3D call. I'm uploading many textures of size 256x256x256 and when I reach a bound of ~600Mb of useg GPU memory, I get the gl_out_of_memory error.

I tried to run several copies of my application simultaneously and each of them use ~600Mb, so I can use all GPU memory, running several copies of the application, but not a single, wich is of course unacceptable. May be there is some limitation for the CPU memory usage, because all copies of those big textures are also stored on CPU while uploading to the GPU?

PS As one can guess, Im developing a Volume Renderer ;)

Thanks a lot, so I am to switch to Win7 and compile my application there.

Thanks one more time ;)
Switching to the 64-bit architecture completely solved the problem ;)
Here is the video of the DVR of 5168 x 512x512x12bit dataset (1.88 Gb)