LogP: towards a realistic model of parallel computation

David Culler; Richard Karp; David Patterson; Abhijit Sahay; Klaus Erik Schauser; Eunice Santos; Ramesh Subramonian; Thorsten von Eicken

doi:10.1145/173284.155333

LogP: towards a realistic model of parallel computation

ACM SIGPLAN Notices ◽

10.1145/173284.155333 ◽

1993 ◽

Vol 28 (7) ◽

pp. 1-12 ◽

Cited By ~ 160

Author(s):

David Culler ◽

Richard Karp ◽

David Patterson ◽

Abhijit Sahay ◽

Klaus Erik Schauser ◽

...

Keyword(s):

Parallel Computation ◽

Realistic Model

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LogP: towards a realistic model of parallel computation

Proceedings of the fourth ACM SIGPLAN symposium on Principles and practice of parallel programming - PPOPP '93 ◽

10.1145/155332.155333 ◽

1993 ◽

Cited By ~ 536

Author(s):

David Culler ◽

Richard Karp ◽

David Patterson ◽

Abhijit Sahay ◽

Klaus Erik Schauser ◽

...

Keyword(s):

Parallel Computation ◽

Realistic Model

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On the influence of specimen thickness in TEM images of super-conducting vortices

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100166087 ◽

1996 ◽

Vol 54 ◽

pp. 724-725

Author(s):

J. Bonevich ◽

D. Capacci ◽

G. Pozzi ◽

K. Harada ◽

H. Kasai ◽

...

Keyword(s):

Flux Line ◽

Analytical Form ◽

Realistic Model ◽

Electron Holography ◽

Specimen Thickness ◽

Flux Tubes ◽

Analytical Expression ◽

Flux Lines ◽

Normal Core ◽

Two Parameters

The successful observation of superconducting flux lines (fluxons) in thin specimens both in conventional and high Tc superconductors by means of Lorentz and electron holography methods has presented several problems concerning the interpretation of the experimental results. The first approach has been to model the fluxon as a bundle of flux tubes perpendicular to the specimen surface (for which the electron optical phase shift has been found in analytical form) with a magnetic flux distribution given by the London model, which corresponds to a flux line having an infinitely small normal core. In addition to being described by an analytical expression, this model has the advantage that a single parameter, the London penetration depth, completely characterizes the superconducting fluxon. The obtained results have shown that the most relevant features of the experimental data are well interpreted by this model. However, Clem has proposed another more realistic model for the fluxon core that removes the unphysical limitation of the infinitely small normal core and has the advantage of being described by an analytical expression depending on two parameters (the coherence length and the London depth).

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