التفاصيل البيبلوغرافية
| العنوان: |
ORNL Cray X1 Evaluation Status Report |
| المؤلفون: |
Agarwal, P. K., Alexander, R. A., Apra, E., Balay, S., Bland, A. S., Colgan, J., D'Azevedo, E. F., Dongarra, J. J., Dunigan Jr., T. H., Fahey, M. R., Fahey, R. A., Geist, A., Gordon, M., Harrison, R. J., Kaushik, D., Krishnakumar, M., Luszczek, P., Mezzacappa, A., Nichols, J. A., Nieplocha, J., Oliker, L., Packwood, T., Pindzola, M. S., Schulthess, T. C., Vetter, J. S., White III, J. B., Windus, T. L., Worley, P. H., Zacharia, T. |
| المساهمون: |
USDOE Director. Office of Science. Office of Advanced Scientific Computing Research, Oak Ridge National Laboratory Contract DE-AC05-00OR22725 (United States) |
| المصدر: |
46th Cray User Group Conference, Knoxville, TN (US), 05/17/2004--05/24/2004 |
| بيانات النشر: |
Lawrence Berkeley National Laboratory |
| سنة النشر: |
2004 |
| المجموعة: |
University of North Texas: UNT Digital Library |
| مصطلحات موضوعية: |
Vectors, Photons, 71 Classical And Quantum Mechanics, General Physics, Supercomputers, Biology, Kernels, Transport, Ornl, 42 Engineering, Simulators, Superconductors, Architecture, Climates, 72 Physics Of Elementary Particles And Fields, Astrophysics, Simulation, Evaluation, Performance |
| الوصف: |
On August 15, 2002 the Department of Energy (DOE) selected the Center for Computational Sciences (CCS) at Oak Ridge National Laboratory (ORNL) to deploy a new scalable vector supercomputer architecture for solving important scientific problems in climate, fusion, biology, nanoscale materials and astrophysics. ''This program is one of the first steps in an initiative designed to provide U.S. scientists with the computational power that is essential to 21st century scientific leadership,'' said Dr. Raymond L. Orbach, director of the department's Office of Science. In FY03, CCS procured a 256-processor Cray X1 to evaluate the processors, memory subsystem, scalability of the architecture, software environment and to predict the expected sustained performance on key DOE applications codes. The results of the micro-benchmarks and kernel bench marks show the architecture of the Cray X1 to be exceptionally fast for most operations. The best results are shown on large problems, where it is not possible to fit the entire problem into the cache of the processors. These large problems are exactly the types of problems that are important for the DOE and ultra-scale simulation. Application performance is found to be markedly improved by this architecture: - Large-scale simulations of high-temperature superconductors run 25 times faster than on an IBM Power4 cluster using the same number of processors. - Best performance of the parallel ocean program (POP v1.4.3) is 50 percent higher than on Japan s Earth Simulator and 5 times higher than on an IBM Power4 cluster. - A fusion application, global GYRO transport, was found to be 16 times faster on the X1 than on an IBM Power3. The increased performance allowed simulations to fully resolve questions raised by a prior study. - The transport kernel in the AGILE-BOLTZTRAN astrophysics code runs 15 times faster than on an IBM Power4 cluster using the same number of processors. - Molecular dynamics simulations related to the phenomenon of photon echo run 8 times faster than previously ... |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
vp.; Text |
| اللغة: |
English |
| العلاقة: |
rep-no: LBNL--55302; grantno: AC03-76SF00098; osti: 831113; https://digital.library.unt.edu/ark:/67531/metadc779208Test/; ark: ark:/67531/metadc779208 |
| الإتاحة: |
https://digital.library.unt.edu/ark:/67531/metadc779208Test/ |
| رقم الانضمام: |
edsbas.33B2232E |
| قاعدة البيانات: |
BASE |
