In addition to his IBM responsibilities, Jordan is able to maintain his visibility as a computational applied mathematician in the high-performance computing community. He is a Fellow of SIAM (Society for Industrial and Applied Mathematics) and of AAAS (American Association for the Advancement of Science). He is active on national and international committees on science and high-performance computing issues and has received several awards for his work on supercomputers. His main research interests lie in the efficient use of advanced architectures computers for simulation and modeling especially in the area of systems biology and physical phenomena. He has authored numerous papers on performance analysis of advanced computer architectures and investigated methods that exploit these architectures. Areas he has published include interactive visualization on parallel computers, parallel domain decomposition for reservoir/groundwater simulation, turbulent convection flows, parallel spectral methods, multigrid techniques, wave propagation, systems biology and tumor modeling.