New techniques for parallel simulation of high-temperature superconductors

Conference · Wed Jun 01 00:00:00 EDT 1994

OSTI ID:10160748

Freitag, L; Plassmann, P ^[1]; Jones, M ^[2]

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1. Argonne National Lab., IL (United States)
2. Tennessee Univ., Knoxville, TN (United States). Dept. of Computer Science

In this paper we discuss several new techniques used for the simulation of high-temperature superconductors on parallel computers. We introduce an innovative methodology to study the effects of temperature fluctuations on the vortex lattice configuration of these materials. We have found that the use of uniform orthogonal meshes results in several limitations. To address these limitations, we consider nonorthogonal meshes and describe a new discrete formulation that solves the difficult problem of maintaining gauge invariance on nonorthogonal meshes. With this discretization, adaptive refinement strategies are used to concentrate grid points where error contributions are large (in this case, near vortex cores). We describe the algorithm used for the parallel implementation of this refinement strategy, and we present computational results obtained on the Intel DELTA.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10160748
• Report Number(s): ANL/MCS/CP-83249; CONF-9405100-7; ON: DE94013875
• Resource Relation: Conference: Scalable high performance computing conference,Knoxville, TN (United States),23 May 1994; Other Information: PBD: [1994]
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
HIGH-TC SUPERCONDUCTORS
COMPUTERIZED SIMULATION
ARRAY PROCESSORS
PARALLEL PROCESSING
ALGORITHMS
COMPUTER-AIDED DESIGN
665411
990200
BASIC SUPERCONDUCTIVITY STUDIES
MATHEMATICS AND COMPUTERS