Data visualization Fermi CUDA 3D diffusion-reaction simulation

I’m writing up the code for 3D diffusion-reaction simulation on CUDA Fermi. However, I’m not sure how can I visualize the data “on-the-fly”, i.e. regularly update the output during the simulation. Could someone have the experience in doing this (i.e. writing your own code) or if you know a specific library package that I can use (free or commercial) can share with me some information.
The libraries to support Fortran language are preferable.

Thank you,

Tuan.

You could try modifying the volume rendering sample in the SDK? Just copy the results of your simulation to the 3D texture.

Fortran, ugh :)