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PARALLEL 2-D GAS-DYNAMIC COMPUTATIONS WITH “D” CODES ON THE DISTRIBUTED MEMORY MP-3 MULTIPROCESSOR

R.Z. Samigulina
VANT. Ser.: Mat. Mod. Fiz. Proc 1997. Вып.1. С. 61-62.

      The evolution of multiprocessors allowed to develop new- methods for the calculation of scientific applications; and to adapt the existing codes to parallel computations.
      The report presented a parallelization algorithm for 2-D Lagrangian method (on a regular grid) within “D” complex [1,2] in a single-domain geometry on the 8-processor distributed-memory MP-3 system [3]. The gas- dynamic code of “D” complex combined with RND code represents a relatively complicated product whose significant modification may require much labor and time. Therefore we use the parallelization algorithm allowing to port these codes to a parallel computer with minor modifications or, without any modification.
      The test computations were run to evaluate the algorithm efficiency. The report presented the computational results illustrating the speedup and efficiency of the parallel algorithm.
      The work results indicate that the parallel computations allow to reduce considerably the computational time for gas-dynamics with the increase in computational cells. The approach used can be also applied to the multidomain case.
      1. Dmitriev N.A., Dmiirieva L.V., Malinovskaya E.V., Sofronov I.D. The method for the calculation of 2-D nonstationary gas-dynamic problems in Lagrangian variables // Theoretical Fundamentals and Construction of Numerical Algorithms in Computational Physics / Ed. by Babenko K.I., M.: Nauka, 1979. P. 175-200.
      2. Artemiev A.Yv., Bashurova M.S., Delov V.I., Dmiirieva L.V., Samigulina R.Z., Senihva O.V., Chernyshev Fu.Z. Applications package “D” for the calculation gas-dynamic problems in Lagrangian variables and deforming solid problems on regular grids // Zababakhin Scientific Conference (report summary). 1992. P. 41- 42.
      3. Voronin B.L., Skrypnik S.I., Kozub A.G. et al. RAMZES package for the calculation of gas-dynamic heat conduction problems // Computer Simulation Technology / Ed. by V.P. Il’in Novosibirsk: Computing Center of Siberian Division of the Soviet Academy of Sciences, 1989.










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