Staff and Faculty Consultants


L. Shawn Matott, PhD
L. Shawn Matott, PhD
Senior Systems Analyst
Phone: 716-845-1300 ext. 3683

Dr. Matott received a Bachelor of Science degree in computer engineering from Clarkson University in 1997 and a PhD in environmental engineering from the University at Buffalo in 2007.

Dr. Matott has over 10 years of experience providing training and support for users of various high-performance computing platforms. He is also an expert at deploying and testing HPC applications and has extensive expertise in porting and compiling code (C/C++, Python, R, MatLab, etc.), writing and debugging shell scripts, and parallel programming (e.g. using MPI, Open MP, CUDA, TensorFlow, Keras, etc.).

Dr. Matott has assisted on several research projects involving the development and application of machine learning and data analytics tools. Application areas have included: stormwater management, precision agriculture, oology (bird nesting and breeding behavior), medical imaging, and radiation therapy.

Patrick Holleran
Patrick Holleran
Senior Network Systems Specialist
Phone: 716-845-1300

Mr. Holleran received Bachelor of Science degrees in computer information systems and sociology from Buffalo State College in 2010. He has over 10 years of experience in IT infrastructure including helping design and build the current Roswell Park High Performance Computing Cluster.

Mr. Holleran performs system administration (e.g account creation, OS updates, etc.) on the Roswell HPC cluster. He also maintains the hardware infrastructure (e.g. networking, storage and compute nodes) of the cluster.


Faculty Consultants

Dr. Morgan earned his undergraduate and Master's degrees in Botany at the University of Toronto. Dr. Morgan's PhD studies at the University of Chicago involved the evolutionary consequences of frequency-dependent selection, and of multilocus deleterious mutation.

Dr. Morgan spent 10 years as an Assistant and then Associate Professor at Washington State University, before joining the Fred Hutchinson Cancer Research Center in 2005. At the Hutch, Dr. Morgan worked on the Bioconductor project for the analysis and comprehension of high-throughput genomic data; he has led Bioconductor since 2008 and the Bioconductor project is now based at the Roswell Park Comprehensive Cancer Center.

With respect to IT Research Computing, Dr. Morgan provides training on the use of R, R-Studio, and Bioconductor in a parallel computing environment.

Daryl Nazareth, PhD, DABR
Medical Physicist
Department of Radiation Medicine
Assistant Professor
Medical Physics Program
University at Buffalo
Phone: 716-845-4990

Dr. Nazareth earned his B.Sc. in Mathematics and Physics at the University of Toronto. He earned his MS in Physics at SUNY-Binghamton, and his PhD in Physics at the University at Buffalo. He completed a postdoctoral research fellowship at the University of Maryland, and joined the faculty at Roswell Park as a Medical Physicist in 2007.

Dr. Nazareth’s research interests involve the application of novel techniques and technologies to the problem of optimization of geometric parameters for the radiation treatment of cancer. This includes the application of HPC resources to running monte carlo codes for radiation dose distribution calculations.

With respect to IT Research Computing, Dr. Nazareth’s research group provides training on the use of MATLAB, simulation-optimization, and Monte Carlo dosimetry in a parallel computing environment.