Numerical Tokamak Turbulence calculations on the CRAY T3E

Full cross section calculations of ion-temperature-gradient-driven turbulence with Landau closure are being carried out as part of the Numerical Tokamak Turbulence Project, one of the U. S. Department of Energy's Phase II Grand Challenges. To include the full cross section of a magnetic fusion...

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Vydáno v:Proceedings of the 1997 ACM/IEEE conference on Supercomputing s. 1 - 13
Hlavní autoři: Lynch, V. E., Leboeuf, J-N., Carreras, B. A., Alvarez, J. D., Garcia, L.
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: New York, NY, USA ACM 15.11.1997
IEEE
Edice:ACM Conferences
Témata:
Applied computing
Applied computing > Physical sciences and engineering
Applied computing > Physical sciences and engineering > Physics
Concurrent computing
Distributed computing
Geometry
Laboratories
Magnetic devices
Mathematics of computing
Mathematics of computing > Mathematical analysis
Mathematics of computing > Mathematical analysis > Numerical analysis
Scientific computing
Software and its engineering
Software and its engineering > Software notations and tools
Stability
Thermal conductivity
Tokamaks
Toroidal magnetic fields
fusion energy
turbulence
parallel computing
PVM
t3e
ISBN:0897919858, 9780897919852
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Popis
Shrnutí:Full cross section calculations of ion-temperature-gradient-driven turbulence with Landau closure are being carried out as part of the Numerical Tokamak Turbulence Project, one of the U. S. Department of Energy's Phase II Grand Challenges. To include the full cross section of a magnetic fusion device like the tokamak requires more memory and CPU time than is available on the National Energy Research Scientific Computing Center's (NERSC's) shared-memory vector machines such as the CRAY C90 and J90. Calculations of cylindrical multihelicity ion-temperature-gradient-driven turbulence were completed on NERSC's 160-processor distributed-memory CRAY T3E parallel computer with 256 Mbytes of memory per processor. This augurs well for yet more memory and CPU intensive calculations on the next-generation T3E at NERSC. This paper presents results on benchmarks with the current T3E at NERSC. Physics results pertaining to plasma confinement at the core of tokamaks subject to ion-temperature-gradient-driven-turbulence are also highlighted. Results at this resolution covering this extent of physical time were previously unattainable. Work is in progress to increase the resolution, improve the performance of the parallel code, and include toroidal geometry in these calculations in anticipation of the imminent arrival of a fully configured, 512-processor, T3E-900 model.
Bibliografie:SourceType-Conference Papers & Proceedings-1
ObjectType-Conference Paper-1
content type line 25
ISBN:0897919858
9780897919852
DOI:10.1145/509593.509635