Biographical Sketch: William Gropp received his B.S. in mathematics from Case Western Reserve University in 1977, an M.S. in physics from the University of Washington in 1978, and a Ph.D. in computer science from Stanford in 1982. He held the positions of assistant (1982-1988) and associate (1988-1990) professor in the Computer Science Department of Yale University. In 1990, he joined the numerical analysis group at Argonne, where he was a senior computer scientist from 2000-2007 and associate director of the Mathematics and Computer Science Division from 2000-2006. He was also a senior scientist in the Department of Computer Science at the University of Chicago, and a senior fellow in the Argonne-University of Chicago Computation Institute from 1999-2007. In 2007, he joined the University of Illinois as the Paul and Cynthia Saylor Professor of Computer Science. From 2008-2014, he was Deputy Director for Research for the Institute of Advanced Computing Applications and Technologies at the University of Illinois. In 2011, he became the founding Director of the Parallel Computing Institute. In 2013, he was named the Thomas M. Siebel Chair in Computer Science, and in 2015 was named Chief Scientist of the National Center for Supercomputing Applications (NCSA). In 2016, he became acting director of NCSA, and in 2017 became director of NCSA. In 2023, he was named a Grainger Distinguished Chair in Engineering. He is also a professor of computer science in the newly named Siebel School of Computing and Data Science. His research interests are in parallel computing, software for scientific computing, and numerical methods for partial differential equations. Dr. Gropp has played a major role in the development of the MPI message-passing standard. He is coauthor of MPICH, the most widely used implementation of MPI, and was involved in the MPI Forum as a chapter author for both MPI-1 and MPI-2. He has written many books and papers on MPI, including "Using MPI" and "Using MPI-2". He has developed adaptive mesh refinement and domain decomposition methods with a focus on scalable parallel algorithms; these algorithms and their application to significant scientific problems are discussed in a book he coauthored, entitled "Parallel Multilevel Methods for Elliptic Partial Differential Equations." Gropp is also one of the designers of the PETSc parallel numerical library and has developed efficient and scalable parallel algorithms for the solution of linear and nonlinear equations. With the other members of the PETSc core team, he was awarded the SIAM/ACM Prize in Computational Science and Engineering in 2015. In addition, he is involved in several other advanced computing projects, including performance modeling, data structure modification for ultra-high-performance computers, and development of component-based software to promote interoperability among numerical toolkits. Gropp was named an ACM Fellow in 2006, an IEEE Fellow in 2010, a SIAM Fellow in 2011, and an AAAS Fellow in 2018. He co-founded SIGHPC in ACM and served as President of the IEEE Computer Society in 2022. He received the IEEE Computer Society's Sidney Fernbach award in 2008, the SIAM-SC Career Award in 2014, and the ACM/IEEE-CS Ken Kennedy Award in 2016. Gropp is a member of the National Academy of Engineering.