W. H. Zurek, P. J. Quinn, J. K. Salmon, and M. S. Warren, "Formation of structure in a CDM universe: Correlations in position and velocity," Ap. J., 1993. (in preparation).  Home/Search   Document Not in Database   Summary   Related Articles

....the parent cell, and those within the unshaded region would interact with even smaller cells inside the daughter cell. 3 Computational Approach Parallel treecodes for distributed memory machines are discussed in [9, 10] and their application to the analysis of galaxy formation may be found in [11, 12]. Further analysis and extensions of the computational methods may be found in [13, 14, 15] The MAC described above is problematical for these previous methods because the parallel algorithm requires determination of locally essential data before the tree traversal begins. With the data dependent ....

....4 Performance Here we provide timings for the various stages of the algorithm on the 512 processor Intel Touchstone Delta installed at Caltech. The timings listed are from an 8:8 million particle production run simulation involving the formation of structure in a cold dark matter Universe [12]. During the initial stages of the calculation, the particles are spread uniformly throughout the spherical computational volume. We set an absolute error bound on each partial acceleration of 10 Gamma3 times the mean acceleration in the system. This results in 2:2 Theta 10 10 interactions ....

W. H. Zurek, P. J. Quinn, J. K. Salmon, and M. S. Warren, "Formation of structure in a CDM universe: Correlations in position and velocity," Ap. J., 1993. (in preparation).

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