Ray Loy, ANL Ray Loy is the Program Director of ATPESC and is the ALCF Lead for Training, Debugging, and Math Libraries. As a member of ALCF’s Performance Engineering group, he has participated in the procurement of all of ALCF’s major systems including Intrepid (Blue Gene/P), Mira (Blue Gene/Q), Theta (XC40), and the upcoming Aurora. Among his interests are performance optimization, parallel debuggers, parallel I/O, transactional memory, and the application/queuing system interface. He has worked closely with projects involving Molecular Dynamics, Climate Modeling, and CFD.