EXPERIENCE OF CREATION OF THE PARALLEL CODE FOR SOLVING MATHEMATICAL PHYSICS PROBLEMS IN DISTRIBUTED COMPUTING ENVIRONMENT

A.M. Anikin, A.Yu. Bisyarin, L.A. Gorbatova, V.M. Gribov, A.V. Kim
VANT. Ser.: Mat. Mod. Fiz. Proc 1997. Вып.1. С. 40.

      At present computers of small and medium performance are usually integrated into computer local area networks (LAN). Each network can be considered as a single computing resource, that is similar in something to multiprocessor parallel computer. Nodes of a network are analogs of processors. This problem deserves attention because of widely spread LAN and permanently increasing both capacity of its relatively cheap components, and channel capacity of communication hardware.
      Base means for organization of parallel calculations in LAN on various types of computers under OS Unix supervision was created by authors of this report. The set of such means makes possible both calculations in a parallel mode, and debugging new parallel programs, intended for the use on real multiprocessor computers with distributed memory. The application program interface on the basis of Berkley Sockets is implemented in the language C and is made out in the form of library of procedures.
      The program for calculations of two-dimensional problems of gas dynamics with heat conduction in the complex geometry domains is created with the use-of this package. For parallelizing computations the method of geometrical decomposition with introduction of internal boundary conditions is applied.
      Factors of speedup and performance of the distributed computer system in calculations on LAN with different number and types of units were represented in the report.