Julien Langou

Julien Langou is a Professor and Department Chair in the Department of Mathematical and Statistical Sciences at the University of Colorado Denver, part of the College of Liberal Arts and Sciences. His expertise lies in Computational Mathematics, focusing on numerical linear algebra, parallel algorithms, and high-performance computing. He has contributed significantly to the development of software libraries such as PLASMA and MAGMA, advancing dense linear algebra computations on modern architectures. His research emphasizes communication-avoiding algorithms, fault-tolerant numerical methods, and optimization of data movement in large-scale systems.

Langou's work includes foundational contributions to matrix factorization techniques, such as QR and Cholesky algorithms, as well as innovations in distributed memory systems. He has led projects like the BALLISTIC initiative to modernize linear algebra libraries for exascale computing. His research has been supported by grants from NSF and other agencies, addressing challenges in parallel computing efficiency and algorithmic robustness.

Key awards include the NSF CAREER award for foundational work in numerical linear algebra and leadership in collaborative research frameworks. Langou has authored numerous publications on topics ranging from error handling in numerical libraries to optimization of I/O-bound algorithms. His academic leadership includes roles in curriculum development and fostering interdisciplinary collaboration in computational science.