Abstract
The paper concerns the problem of efficient distributed execution of fragmented programs in LuNA system, which is a automated parallel programs construction system. In LuNA an application algorithm is represented with a high-level programming language, which makes the representation portable, but also causes the complex problem of automatic construction of an efficient distributed program, which implements the algorithm on given hardware and data. The concept of adding supplementary information (recommendations) is employed to direct the process of program construction based on user knowledge. With this approach the user does not have to program complex distributed logic, while the system makes advantage of the user knowledge to optimize program and its execution. Implementation of this concept within LuNA system is concerned. In particular, a conventional compiler is employed to optimize the generated code. Some performance tests are conducted to compare efficiency of the approach with both previous LuNA release and reference hand-coded MPI implementation performance.
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