Computer Science and Mathematics Research Highlights

Research Highlights

Oak Ridge National Laboratory

New look at supercomputing workflows supports more effective collaboration

Scientists at the Department of Energy’s Oak Ridge National Laboratory are examining the diverse supercomputing workflow management systems in use in the United States and around the world to help supercomputers work together more effectively and efficiently. Because supercomputers have...
pulse trigger

Cryogenic Memory Cell Design Based on Small Coupled Arrays of Josephson Junctions

Researchers proposed a cryogenic memory cell design that has a potential to substantially outperform the existing memory cells, achieve much faster access times and lower access and dissipation energies, and reduce the size of the memory cell. Designing fast, energy efficient and small...
ORNL Materials

Tailoring Plastics to Soak up Carbon Dioxide

Achievement: Designed a polymer for selective and reversible carbon dioxide (CO2) capture. Significance and Impact: The new polymer that is based on amidines can provide a more efficient alternative to conventional polyethyleneimine (PEI) based...
Oak Ridge National Laboratory

Data Analytics for Additive Manufacturing

Overview: Recent advances and success stories in Additive Manufacturing (AM) or 3D printing have resulted in references to the process as the “next industrial revolution.”   Producing parts without defects or that will adhere to failure standards are part of the challenge...
Oak Ridge National Laboratory

Developing Fault Catalog for OLCF Systems (Titan, Jaguar, EOS)

Achievement: Developed analysis tools for analyzing system logs from Titan, Jaguar and Eos systems from OLCF to extract characteristics of interest and created fault catalogue. Significance and Impact: Understanding the characteristics of system failures...
Oak Ridge National Laboratory

Layout-Aware Data Scheduler for Bulk Data Transfer over Terabit Networks

Achievement: Developed an end-to-end data transfer framework, named LADS, for bulk data transfer for terabit networks that is optimized for parallel file systems on both the source and sink. This work includes techniques to improve data transfer under congestion, without...
Oak Ridge National Laboratory

New ORNL Paper Surveys Approximate Computing Techniques

As rising performance demands confront plateauing resource budgets, approximate computing (AC) has become not merely attractive, but imperative. We have performed a comprehensive survey of techniques for AC in CPU, GPU and FPGA and various processor components (e.g. cache, main memory,...
Extending Supramolecular Polymerization to New Lengths

Extending Supramolecular Polymerization to New Lengths

A molecule, called a nucleoside analog and which is composed of an Adenine moeity and glycol group, was deposited on top of the Au(111) surface and studied with scanning tunneling microscopy and density functional theory calculations. The molecule was found to self-assemble into a...
Revealing Various Stacking Patterns Between Layers in Two-dimensional 2D Materials

Revealing Various Stacking Patterns Between Layers in Two-dimensional (2D) Materials

In this work unique twisted bilayers of MoSe2 with periodic multiple stacking configurations and interlayer couplings were discovered in the narrow range of twist angles, 60± 3°, using ulra-low frequency Raman spectroscopy and first-principle theory. We showed that the slight...
Functional Programming Computational Cores Embedded Into Traditional High Performance Computing Language Programs

Functional Programming Computational Cores Embedded Into Traditional High Performance Computing Language Programs

We demonstrated feasibility of embedding functional programming (FP) computational cores written in Scala into programs written in three traditional languages used to implement high performance computing (HPC) applications: Fortran, C, and C++. Measured the performance and overhead of...