DTMES 2022 - Presentation

Thermal and Energy Management Challenges in Large-Scale, Sustainable Computing Systems
Dereje Agonafer,Presidential Distinguished Professor of MAE at University of Texas

Abstract - of the components rising significantly in the past decade. This power growth can be primarily attributed to advancements in high power CPUs and GPUs to support high power computing applications like AI and machine learning algorithms development. In this presentation, challenges, and opportunities in cooling technologies from evaporative heat exchangers, cold plate based liquid cooling, and immersion cooling will be discussed. At the end, challenges related to new packaging architectures and the impact on data center cooling will be addressed. Related to air cooling and energy efficiency, we have made significant improvements with the adoption air-side economization and evaporative cooling. However, it is imperative to intensify efforts for widespread adoption of such alternatives to mechanical refrigeration systems. This calls for the development of diverse predictive and prognostic models, based on the principles of thermodynamics, transport phenomena and machine learning. The data center of tomorrow calls for a holistic integration of multi-scale thermal design of reliable and energy efficient electronic systems to keep with the ever-changing data center landscape.

Dereje Agonafer is a Presidential Distinguished Professor in the Department of Mechanical and Aerospace Engineering. He heads two centers and is "Site Director of NSF IUCRC in Energy Efficient Systems" and Director of "Electronics, MEMS and Nanoelectronics Systems Packaging Center." After receiving his PhD at Howard University, he worked for 15 years at IBM where he eventually was IBM Center of Competence for Computer Aided Thermal Engineering (CATE). In 1991, the value of his contribution to CATE at IBM was recognized by being awarded the "IBM Outstanding Technical Achievement Award in Appreciation for Computer Aided Thermal Modeling." Since joining UT Arlington in 1999, he has graduated 245 graduate students (a record for the University) including 28 PhDs. Professor Agonafer is currently advising 15 PhDs and several MS students. His current primary research areas are in energy efficiency of data centers, heterogeneous integration, 3D packaging and cooling and Reliability Assessment for Micro and Power Electronic Systems. Professor Agonafer has served in several departmental and college level boards including at Howard University, University of Colorado Boulder, City College of New York and Princeton University..