PARALLEL COMPUTING AT THE N0NSTATI0NARY SPACIAL FLOW ROUTINE

O. M. Velichkho
VANT. Ser.: Mat. Mod. Fiz. Rroc 1989. Вып.3. С. 29-33.

      OS SVS has beep implemented on multiprocessor system SVS since 1986, allowing users to parallel problem runs. These OS SVS capabilities were used for parallel computing in the routine of nonstat ionary space fields of flows near blunted bodies with finite difference Godunov method. Sufficienty large volume of virtual memory embodied computing blocks and problem data and thereby allowed to refuse their dynamic loading during step count. The task is represented as a control and several computation processes. The computation processes compute gas dynamics flow parameters simultaneously for several workspaces. The control process performs coordinating functions. Interprocessor information communications are handled by means of semaphores and events. Timings showed that for four processor the total CPU time taken by a task per astronomical time unit amounts to 3,8 units.