Application of an array processor to the analysis of magnetic data for the Doublet III tokamak

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Discussed herein is a fast computational technique employing the Floating Point Systems AP-190L array processor to analyze magnetic data for the Doublet III tokamak, a fusion research device. Interpretation of the experimental data requires the repeated solution of a free-boundary nonlinear partial differential equation, which describes the magnetohydrodynamic (MHD) equilibrium of the plasma. For this particular application, we have found that the array processor is only 1.4 and 3.5 times slower than the CDC-7600 and CRAY computers, respectively. The overhead on the host DEC-10 computer was kept to a minimum by chaining the complete Poisson solver and free-boundary algorithm into ... continued below

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Pages: 17

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Wang, T.S. & Saito, M.T. August 1, 1980.

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Description

Discussed herein is a fast computational technique employing the Floating Point Systems AP-190L array processor to analyze magnetic data for the Doublet III tokamak, a fusion research device. Interpretation of the experimental data requires the repeated solution of a free-boundary nonlinear partial differential equation, which describes the magnetohydrodynamic (MHD) equilibrium of the plasma. For this particular application, we have found that the array processor is only 1.4 and 3.5 times slower than the CDC-7600 and CRAY computers, respectively. The overhead on the host DEC-10 computer was kept to a minimum by chaining the complete Poisson solver and free-boundary algorithm into one single-load module using the vector function chainer (VFC). A simple time-sharing scheme for using the MHD code is also discussed.

Physical Description

Pages: 17

Notes

NTIS, PC A02/MF A01.

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  • 4. annual FPS Users' conference, San Francisco, CA, USA, 28 Apr 1980

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  • Report No.: GA-A-15800
  • Report No.: CONF-800415-3
  • Grant Number: AT03-76ET51011
  • Office of Scientific & Technical Information Report Number: 5017593
  • Archival Resource Key: ark:/67531/metadc1061821

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • August 1, 1980

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  • Jan. 22, 2018, 7:23 a.m.

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  • Jan. 29, 2018, 12:50 p.m.

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Wang, T.S. & Saito, M.T. Application of an array processor to the analysis of magnetic data for the Doublet III tokamak, article, August 1, 1980; United States. (digital.library.unt.edu/ark:/67531/metadc1061821/: accessed December 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.