We have developed a new strategy and espouse a novel paradigm for large-scale computing and real-time interactive visualization. This philosophy calls for intense interactive sessions for a couple of hours at a time at the expense of storing data on many disk drives during regular or heroic runs on massively parallel systems. We have already carried out successfully real-time volume-rendering visualization by employing hundreds of processors for a grid with over 25 million unknowns. Both Cartesian and spherical 3D mantle convection are visualized. The volume-rendered images are viewed on a large display device, with many panels holding around 13 million pixels. We will employ a software strategy involving an hierarchical rendering service, which will have as software an Ajax interface for interactive visualization of large data sets on many different platforms from desktop PC's to hand-held devices, such as the OQO and the Nokia N-800. An option for stereo viewing is also implemented. We have installed a user interface as web application, using Java and Ajax framework in order to achieve over the Internet reasonable accessibility to our ongoing runs. Our goal is to expand the array of interactive devices, which will make it feasible to carry out ubiquitous visualization and monitoring of large-scale simulations or onsite events and to allow for collaborations across oceans.
Bibliographical noteFunding Information:
Acknowledgments We would like to thank ITR program and the IF program of middleware development from EAR division of the National Science Foundation and also the National Scientific Integration and Visualization Office (SIVO, 610.3) at the NASA Goddard Space Flight Center for their support in activities relating to this research. We thank discussions with Professor Paul R. Woodward, Dr. David H. Porter, Mr. Erik O.D. Sevre and Professor Gordon Er-lebacher and Mr. E. Farmer Bollig both from Florida State University. We thank Dr. Yingchun ‘‘Spring’’ Liu very much for her artistic work. We are grateful to Ms. Stephanie Chen for her help.
- 3D mantle convection
- Ajax framework
- Hand-held device