Thomas Zacharia, originally from Kerala, India, has made significant contributions to the field of computing, particularly in supercomputing and artificial intelligence. After completing his PhD in 1987, he spent 35 years at Oak Ridge National Laboratory, where he championed the use of Graphics Processing Units (GPUs) over traditional Central Processing Units (CPUs) for high-performance computing. This pivotal decision led to the development of Titan, the world's fastest supercomputer at its launch in 2012, proving that GPUs could handle complex simulations and AI tasks. Zacharia also oversaw the development of Summit and Frontier, the latter being the first exascale supercomputer. In 2024, he joined Advanced Micro Devices (AMD) to further advance AI technologies. His current project, Helios, is a rack-scale AI platform designed to deliver high computing power with enhanced energy efficiency, marking another step forward in the evolution of computing technology.