David O'Hallaron is a Full Professor in Computer Science and Electrical and Computer Engineering at Carnegie Mellon University. He received his Ph.D. from University of Virginia. After a stint at GE, he joined the Carnegie Mellon faculty in 1989. Prof. O'Hallaron works in the broad area of computer systems, with specific interests in autograding systems, virtualization, scientific computing, and high-performance computing. He is currently leading the Autolab project, which aims to develop a new capability for autograding programming assignments on secure virtual machines. The current system (as of 2022) is being used by 5,000+ CMU students in 50+ courses each semester. He recently lead the Carnegie Mellon Quake project (with Jacobo Bielak), which is developing the capability to predict the motion of the ground during strong earthquakes. He also lead the effort at Intel Labs to develop an open source cluster management system for cloud computing on Big Data, and he developed systems such as Internet Suspend/Resume with Prof Satya that use virtual machines for user mobility and enterprise client management. In 1998 the CMU School of Computer Science awarded Prof. O'Hallaron and the other members of the CMU Quake Project the Allen Newell Medal for Research Excellence. In 2000, a benchmark he developed for the Quake project, 183.equake, was selected by SPEC for inclusion in the influential CPU2000 and CPU2000omp (Open MP) benchmark suites. In November, 2003, Prof. O'Hallaron and the other members of the Quake team won the 2003 Gordon Bell Prize, the top international prize in high performance computing. In 2004, he was awarded the Herbert Simon Award for Teaching Excellence by the CMU School of Computer Science. In 2005, he received the Outstanding Research Award from the CMU College of Engineering. In 2006, Prof O'Hallaron and the other members of the Quake project won the HPC Analytics Challenge at SC06, beating out finalist teams from a DOE National Lab and a consortium of Japanese companies and universities. In 2017 he was awarded the Benjamin Richard Teare Teaching Award by the College of Engineering (CIT), and in 2020 he was awarded the Philip L. Dowd Teaching Fellowship by the College of Engineering (CIT). With Randy Bryant, he published a new computer systems textbook (Computer Systems: A Programmer's Perspective, Pearson, Third Edition, 2016) that has been adopted by hundreds of schools worldwide.