Office of Advanced Scientific Computing Research (ASCR)

Highlights

For the problem of computing the connected components of a graph, this work considers the design of algorithms that are resilient to transient hardware faults, like bit flips.…

Due to the scale and complexity of the Summit system, the OLCF developed and executed a thorough acceptance test plan with two major goals. The first goal was to…

With this work we looked at the overheads of in-transit and in-line visualization at various scales. We demonstrate that in-transit techniques can provide not only a time…

Recently, persistent data structures, like key-value stores (KVSs), which are stored in an HPC system's nonvolatile memory, provide an attractive solution for a number of emerging challenges like…

  • DCA++, an ORNL-developed code to simulate correlated quantum materials.
  • Researchers develop optimized algorithm and parallelization strategies for the implementation of new…

The GTC CAAR code uses POSIX I/O natively that imposes significant challenges in obtaining highly performance I/O and overall management of…

Quantum field theory (QFT) simulations are a potentially important application for noisy intermediate scale quantum (NISQ) computers. The ability of a quantum…

Among the projects within the Software Technology area of the Exascale Computing Project (ECP) [1] is the SICM project [2] which focuses on delivering a…

The Best Practices for HPC Software Developers (HPC-BP) webinar series is a major component of the outreach efforts of the IDEAS Productivity Project. Since its inception, the project has been…

During the past 20 years, computation has penetrated essentially all areas of research, including science, engineering, technology, and society; advanced modeling, simulation, and data analysis…

The connection between forward backward doubly stochastic differential equations and the optimal filtering problem is established without using the Zakai's equation. The solutions of forward…

Log processing by Spark and Cassandra-based ANalytics (LogSCAN) is a newly developed analytical platform that provides flexible and scalable data gathering, transformation and computation.

The most efficient surrogate construction algorithms are carefully tailored towards the specific target model. The tailoring is commonly done on two levels, first selecting the general class of…

We present a quantum-classical algorithm to study the dynamics of the two-spatial-site Schwinger model on IBM's quantum computers. Using rotational symmetries,…