Sandia LabNews

Sandia researcher named SIAM fellow

Image of Computer scientist Ray Tuminaro
SIAM FELLOW — Sandia computational scientist and mathematician Ray Tuminaro has been named a 2022 fellow of the Society for Industrial and Applied Mathematics. (Photo by Dino Vournas)

Sandia computational scientist and applied mathematician Ray Tuminaro has been named a 2022 fellow of the Society for Industrial and Applied Mathematics for “contributions in iterative linear solver algorithms and software that address scientific computing applications on large-scale parallel systems.”

A distinguished member of Sandia’s technical staff, Ray has been praised for exceptional versatility in shepherding basic research ideas from inception to application, aided by close interactions with scientists and by his creation of efficient mathematical software.

“I’ve been extremely fortunate to work with topnotch research collaborators during my career, and I’m grateful for it,” he said upon hearing news of his fellowship. “I appreciate the vibrant research atmosphere that exists within my center and the warm community of talented colleagues.”

He praised “opportunities to work on engaging technical challenges, interesting seminars and visitors, and a highly adept and flexible leadership team.”

He also acknowledged the importance of sustained funding from the DOE Office of Science’s Advanced Scientific Computing Research Applied Mathematics Program as “essential in making long-term contributions possible.”

 Colleagues have described Ray’s research approach as “uncommon and forward-thinking.” Without his accomplishments, Sandia’s highly visible scientific computing suite Trilinos might not exist. Trilinos, led by Sandia researcher Mike Heroux, won several international awards and was based in part on Ray’s leading development of the Aztec iterative solver library, which provides algorithms described in Sandia literature as “easy to use and efficient.” That library won a 1997 R&D100 award and was part of a 1997 Gordon Bell Prize finalist nomination, led by Sandia researcher John Shadid.

Ray has served on the editorial board of SIAM’s Journal of Scientific Computing, was a section editor for SIAM Review and has been on program committees for a range of international conferences. He also served as co-chair for five Copper Mountain Conferences on Iterative Methods — one of the most important meetings in the field. While co-chair, Ray broadened the diversity of the conference topics, expanded the meeting scope and helped grow attendance to the highest levels in decades. Participation in student-paper competitions rose from about 20 per year to nearly 50, making the awards a highly competitive opportunity.

He has published 22 papers in SIAM journals. He has been described as having extraordinary intuition about numerical algorithms and their applications, as well as advancing the state-of-the-art of multigrid algorithms. Those achievements were extensions of Ray’s doctoral thesis at Stanford University in 1989, “Multigrid Algorithms for Parallel Processors.”

Ray also has devoted generous amounts of time and energy in helping develop and orient the careers of young people. He served as mentor for many students and postdoctorates at Columbia University, Technical University of Munich, Berkeley Lab, Lawrence Livermore National Laboratory, University of New Mexico and Sandia, among other locations.

Ray will be recognized for his achievements during SIAM’s annual meeting July 11-15 in Pittsburgh, Pennsylvania.

SIAM is an international society of more than 14,000 individual, academic and corporate members from 85 countries. It seeks “to build cooperation between mathematics and the worlds of science and technology to solve real-world problems,” according to its website.

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