Properties of Complex Inorganic Solids Edited by Antonios Gonis, Annemarie Meike, and Patrice E. A. Turchi (Lawrence Livermore National Laboratory). Plenum Press:  New York. 1997. xii + 510 pp. $135.00. ISBN 0-306-45606-0.

1997 ◽  
Vol 119 (51) ◽  
pp. 12700-12700
Keyword(s):  
New York ◽  
Lawrence Livermore National Laboratory ◽  
National Laboratory ◽  
Inorganic Solids

scholarly journals Guest Editor's Preface: The Eighth International Workshop on the Physics of Compressible Turbulent Mixing

2003 ◽  
Vol 21 (3) ◽  
pp. 301-303 ◽  
Author(s):  
Oleg Schilling
Keyword(s):  
New York ◽  
Turbulent Mixing ◽  
International Workshop ◽  
Lawrence Livermore National Laboratory ◽  
National Laboratory ◽  
California Institute ◽  
University Of Cambridge ◽  
California Institute Of Technology ◽  
Institute Of Technology ◽  
The University

This issue of Laser and Particle Beams contains 27 contributed articles based on presentations given at the eighth International Workshop on the Physics of Compressible Turbulent Mixing (IWPCTM) (see http://www.llnl.gov/IWPCTM), held at the California Institute of Technology, Pasadena, California from December 9 to 14, 2001, and organized jointly by the Lawrence Livermore National Laboratory (LLNL) and the California Institute of Technology. This conference is the eighth in a biennial series of conferences on the general subject of experimental, numerical, and theoretical studies of compressible turbulent mixing, initiated by LLNL in the late 1980s. Previous conferences were held in Princeton, New Jersey (1988), Pleasanton, California (1989), Royaumont, France (1991), Cambridge, United Kingdom (1993), Stony Brook, New York (1995), Marseille, France (1997), and St. Petersburg, Russia (1999). The ninth IWPCTM is to be held at the University of Cambridge in 2004.

Data Center Housing High Performance Supercomputer Cluster: Above Floor Thermal Measurements Compared To CFD Analysis

2010 ◽  
Vol 132 (2) ◽  
Author(s):  
Roger Schmidt ◽  
Madhusudan Iyengar ◽  
Joe Caricari
Keyword(s):  
New York ◽  
Data Center ◽  
High Performance ◽  
Data Centers ◽  
Lawrence Livermore National Laboratory ◽  
National Laboratory ◽  
Heat Fluxes ◽  
Cfd Modeling ◽  
Peak Performance ◽  
Cfd Analysis

With the ever increasing heat dissipated by information technology (IT) equipment housed in data centers, it is becoming more important to project the changes that can occur in the data center as the newer higher powered hardware is installed. The computational fluid dynamics (CFD) software that is available has improved over the years. CFD software specific to data center thermal analysis has also been developed. This has improved the time lines of providing some quick analysis of the effects of new hardware into the data center. But it is critically important that this software provide a good report to the user of the effects of adding this new hardware. It is the purpose of this paper to examine a large cluster installation and compare the CFD analysis with environmental measurements obtained from the same site. This paper shows measurements and CFD data for high powered racks as high as 27 kW clustered such that heat fluxes in some regions of the data center exceeded 700 W per square foot. This paper describes the thermal profile of a high performance computing cluster located in an data center and a comparison of that cluster modeled via CFD. The high performance advanced simulation and computing (ASC) cluster had a peak performance of 77.8 TFlop/s, and employed more than 12,000 processors, 50 Tbytes of memory, and 2 Pbytes of globally accessible disk space. The cluster was first tested in the manufacturer’s development laboratory in Poughkeepsie, New York, and then shipped to Lawrence Livermore National Laboratory in Livermore, California, where it was installed to support the national security mission of the U.S. Detailed measurements were taken in both data centers and were previously reported. The Poughkeepsie results will be reported here along with a comparison to CFD modeling results. In some areas of the Poughkeepsie data center, there were regions that did exceed the equipment inlet air temperature specifications by a significant amount. These areas will be highlighted and reasons given on why these areas failed to meet the criteria. The modeling results by region showed trends that compared somewhat favorably but some rack thermal profiles deviated quite significantly from measurements.

Lattice QCD on GPU clusters, using the QUDA library and the Chroma software system

2012 ◽  
Vol 26 (4) ◽  
pp. 386-398 ◽  
Author(s):  
Bálint Joó ◽  
Mike A. Clark
Keyword(s):  
Quantum Chromodynamics ◽  
Graphics Processing Units ◽  
Lawrence Livermore National Laboratory ◽  
National Laboratory ◽  
Application Framework ◽  
Software System ◽  
Nuclear Forces ◽  
Lattice Quantum Chromodynamics ◽  
Lattice Quantum ◽  
Strong Scaling

The QUDA library for optimized lattice quantum chromodynamics using GPUs, combined with a high-level application framework such as the Chroma software system, provides a powerful tool for computing quark propagators, a key step in current calculations of hadron spectroscopy, nuclear structure, and nuclear forces. In this contribution we discuss our experiences, including performance and strong scaling of the QUDA library and Chroma on the Edge Cluster at Lawrence Livermore National Laboratory and on various clusters at Jefferson Lab. We highlight some scientific successes and consider future directions for graphics processing units in lattice quantum chromodynamics calculations.

Short wavelength x‐ray laser research at the Lawrence Livermore National Laboratory

1992 ◽  
Vol 4 (7) ◽  
pp. 2326-2337 ◽  
Author(s):  
B. J. MacGowan ◽  
L. B. Da Silva ◽  
D. J. Fields ◽  
C. J. Keane ◽  
J. A. Koch ◽  
...  
Keyword(s):  
Short Wavelength ◽  
Lawrence Livermore National Laboratory ◽  
National Laboratory ◽  
X Ray
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