Performance of DVM-program execution (March, 2002) . ... To estimate the performance of DVM-programs appropriate versions of NAS tests (NPB 2.3) were developed. ... The brief characteristics of tests are given below, and their sizes in lines for three versions of each program - the sequential version, the MPI-version and the DVM-version are presented. Test . ... SEQ . ... For each test the ratio of execution time of its MPI-version to execution time of the DVM-version on MVS-1000m are given below. ...