Statistics – Computation
Scientific paper
Jul 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987fmps.nasa...29w&link_type=abstract
In NASA. Goddard Space Flight Center, Frontiers of Massively Parallel Scientific Computation p 29-35 (SEE N87-26531 20-61)
Statistics
Computation
Boltzmann Transport Equation, Computational Grids, Computer Systems Performance, Massively Parallel Processors, Parallel Processing (Computers), Star Clusters, Stellar Systems, Architecture (Computers), Galaxies, Gravitation, Many Body Problem, Memory (Computers), Transformations (Mathematics)
Scientific paper
A numerical technique for solving the collisionless Boltzmann equation describing the time evolution of a self gravitating fluid in phase space was implemented on the Massively Parallel Processor (MPP). The code performs calculations for a two dimensional phase space grid (with one space and one velocity dimension). Some results from calculations are presented. The execution speed of the code is comparable to the speed of a single processor of a Cray-XMP. Advantages and disadvantages of the MPP architecture for this type of problem are discussed. The nearest neighbor connectivity of the MPP array does not pose a significant obstacle. Future MPP-like machines should have much more local memory and easier access to staging memory and disks in order to be effective for this type of problem.
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