Matthew is a member of the Advanced Technologies Group. His educational background is in marine geology and geophysics and in applied mathematics. His first exposure to parallel and high performance was in graduate school at MIT where he worked with advisor Jason Phipps Morgan to develop a physical and chemical model of partial melting and mantle convection at mid-ocean ridges. This brought him in contact with an Alliant FX-4, a departmental sized vector-parallel computer, which served as a stepping-stone to a variety of different architectures through the years including machines from Cray, Fujitsu, and IBM. A former employee of the Center for Applied Scientific Computing at LLNL, Cray Inc and the Swiss National Supercomptuing Centre, Matthew has extensive experience in parallel application development, as well as performance profiling and optimization, on both vector-parallel and MPP architectures. As part of the group at NERSC, he is involved in efforts to help design the next generation of supercomputers.