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In situ visualization on the Mutrino Trinity Platform
April 1, 2016 • Sandia visualization researchers have collaborated with engineers from Sandia’s SIERRA Toolkit-based Nalu low Mach flow code team to integrate the ParaView/Catalyst in situ visualization library with the Nalu code.  In situ visualization allows parallel simulations to perform analysis and visualization at run time in order to avoid lengthy I/O operations...
Figure: Fine-grained, scalable 3-d simulation of a wind turbine airfoil using Nalu with ParaView/Catalyst for in situ visualization. Image shows z-velocity on a slice and vorticity in close-ups of the leading and trailing edge of the airfoil.

NiMC: Network-Induced Memory Contention
April 1, 2016 • Researchers at Sandia National Laboratories have introduced the concept of Network-Induced Memory Contention (NiMC) and demonstrated its impact for a variety of current HPC system architectures. NiMC occurs when a remote direct memory access (RDMA) contends with the target node for the target's memory resources. Given the importance of computation/communication...
: Impact of Network-Induced Memory Contention on LAMMPS at up to 8,192 cores

Advanced Release of Draft Technical Specifications for Crossroads
February 1, 2016 • The first version of the draft technical specifications for Crossroads were released on November 1st 2015 to the vendor community for comment. Crossroads, one of two platforms targeted for delivery in 2020, will be the NNSA’s third Advanced Technology System. Crossroads will be the second platform procured as part of...
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Data collection for the Transportation Security Administration
February 1, 2016 • Data collection for the Transportation Security Administration Recently, two projects for the Transportation Security Administration (TSA) have succeeded in collecting data from Transportation Security Officers (TSOs) that are, in many ways, unparalleled in the research community. These projects, Performance Decrement and Passenger Threat Detection Resolution (PTDR) were aimed at answering...

Two Sandia scientists cited for computing advances yielding real world impact
February 1, 2016 • Sandia scientists Ali Pinar (8962) and Cindy Phillips (1400) have been selected as distinguished members of the Association for Computing Machinery (ACM). ACM, the world’s leading association of computing professionals, selected Ali and Cindy for their significant accomplishments and impact in computing. ACM recently selected 49 members for this recognition...
Sandia scientists Ali Pinar (8962) and Cindy Phillips (1400) have been selected as distinguished members of the Association for Computing Machinery.

Trinity
January 1, 2016 • The next-generation Trinity supercomputing platform project has recently achieved two important milestones. Trinity is an advanced computing platform for stockpile stewardship that is being architected and procured by the Alliance for Computing at Extreme Scale (ACES), a partnership between Sandia and Los Alamos National Laboratories, under the NNSA Advanced Simulation...

A new, optimization-based coupling strategy for nonlocal and local diffusion models
December 1, 2015 • The use of nonlocal models in science and engineering applications has been steadily increasing over the past decade. The ability of nonlocal theories to accurately capture effects that are difficult or impossible to represent by local partial differential equation (PDE) models motivates and drives the interest in a wide range...
Simulation of a bar containing a discontinuity. The discontinuity extends vertically from the top of the bar halfway through the height of the bar. Dirichlet boundary conditions are applied to the ends of the bar (local domain), circumventing the need to prescribe volume constraints in the nonlocal domain.

Kurt Ferreira Receives IEEE Early Career Award
September 1, 2015 •  Kurt Ferreira has been selected to receive the 2015 IEEE Technical Committee on Scalable Computing Award for Excellence for Early Career Researchers. The award will be presented during the Award Ceremony at the IEEE/ACM International Conference on High Performance Computing, Networking, Storage, and Analysis (SC'15) in Austin, Texas, in November....
Kurt Ferreira

New Exascale Interconnect Based on Sandia Technology
September 1, 2015 •  French Supercomputer vendor Atos, formerly Bull, recently announced plans to develop a new interconnect for exascale computing systems based on Sandia’s Portals 4 network programming interface. A keynote talk at the recent IEEE Symposium on High-Performance Interconnects entitled “The BXI Interconnect Architecture” detailed the design of the network interface and...
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Ryan Grant Wins Best Paper Award at IEEE Cluster Conference
September 1, 2015 •  The Best Paper Award at the 2015 IEEE International Conference on Cluster Computing was given to a paper entitled “Optimizing Explicit Hydrodynamics for Power, Energy, and Performance” co-authored by Ryan Grant and colleagues from Lawrence Livermore National Laboratory. The paper was selected from 38 regular papers presented at the conference....
Ryan Grant

Pavel Bochev receives DOE’s E.O. Lawrence Award
June 1, 2015 • Pavel Bochev (1442), a computational mathematician, has received an Ernest Orlando Lawrence Award for his pioneering theoretical and practical advances in numerical methods for partial differential equations. “This is the most prestigious mid-career honor that the Department of Energy awards,” says Bruce Hendrickson (director 1400, Computing Research). Lawrence Award recipients...
Pavel Bochev receives DOE’s E.O. Lawrence Award

Stewart Silling received the 2015 Beltyschko Medal
June 1, 2015 • Stewart Silling was recognized for outstanding and sustained contribution to the field of computational mechanics For developing and demonstrating peridynamics as a new mechanic methodology for modeling fracture and high strain deformation in solids at the Annual Meeting of the US Association for Computational Mechanics in San Diego in July...
Mr. Silling with his wife Catherine.

Sandia-led Mantevo Project Wins 2013 R&D 100 Award
November 1, 2014 • The Sandia-led Mantevo Project for developing miniapps and related application proxies that enable design space exploration for next generation computer systems and application designs received a 2013 R&D 100 award.  

DOE-Micron Hybrid Memory Cube Research, Development, and Analysis
August 1, 2014 • On July 17, 2014 representatives from Sandia, LBNL, PNNL, and DoD's LPS/ACS organizations met with Micron to discuss the Multi-FPGA application development environment, and the status of memory controller updates for the Micron hybrid memory cube (HMC) test and evaluation (T&E) boards. Initial Micron testing demonstrated approximately an order of...
Photo of HMC Gen2 Test and Evaluation Board

Coupling Local to Nonlocal Continuum Models
July 1, 2013 • Nonlocality, the incorporation of a length scale within the equations of mechanics, is increasingly recognized as an essential aspect of high-fidelity modeling of the fracture and failure of solids. The nonlocal peridynamic model, while providing the key advantage of unguided, autonomous crack growth, is computationally slower than the local finite...
Coupling Local to Nonlocal Continuum Models

2013 Dakota releases provide users an array of new features
May 1, 2013 • Dakota version 5.3, released 1/31/2013, and its partner version 5.3.1, released 5/15/2013, feature new adaptive, sparse, and surrogate-based UQ methods, new Bayesian calibration methods, and improvements to discrete optimization. The new versions also include enhancements to the testing infrastructure, core framework, and portability (including to native Windows). The Dakota user...

ACES and NERSC form partnership for next-generation supercomputers, an unprecedented collaboration between NNSA and the Office of Science
March 1, 2013 • The Alliance for Computing at Extreme Scale (ACES, a collaboration of the NNSA’s Los Alamos National Laboratory and Sandia National Laboratories) and the Office of Science’s National Energy Research Scientific Computing Center (NERSC) have fully integrated as a team as they work towards their respective next-generation supercomputer deployments. The goal...

Checkpoint Compression – An Application Transparent Performance Optimization
March 1, 2013 • Checkpoint/restart is the prevailing approach for application fault-tolerance for large-scale systems. With the largest HPC systems already consisting of millions of cores, we expect HPC system core counts to continue to increase. In these large-scale environments, a confluence of issues including extremely low system MTBF and increased I/O pressures has...
Impact of Checkpoint Compression and Incremental Checkpointing on Application Efficiency

PANTHER Grand Challenge LDRD Kicks Off
November 1, 2012 • The PANTHER (Pattern ANalytics To support High-performance Exploitation and Reasoning) Grand Challenge officially kicked off on October 1st. This represents an enormous laboratory investment in a project that will represent a new level of integrating capabilities in 1400 and 5000 to bring solutions to some of the most important problems...

New Umbrella CRADA with Caterpillar Approved
October 1, 2012 • A new Umbrella CRADA with Caterpillar Inc. has been formally approved. This collaboration will bring together Sandia’s broad, advanced simulation technology for addressing Caterpillar’s multi-faceted design, analysis, and decision-making challenges. In turn, the development and integration of Sandia’s foundational technologies across these areas will be greatly accelerated. Moreover, the collaboration...
Results 101–125 of 125