Guide to the programming of I/O on the Paragon

Real parallel calculations with the use of over hundreds computers were performed in Japan since several years ago. The Intel Paragon XP/S 15GP256 < Naka Fusion Research Establishment >, 75MP834 < Kansai Research Establishment > were introduced as pioneers in Japan Atomic Energy Research Institute (JAERI) for the purpose of the massive parallel calculations of advanced photon and fusion researches. Recently, a lot of parallel programs have been transplanted and newly produced to perform the parallel calculations with the computers. These programs are almost instant, therefore there are some seeds of trouble in the massive parallel computing. When programs are developed under different computer and operating system (OS), prudent directions and knowledge are needed. However, integration of knowledge and standardization of environment are quite difficult because number of Paragon system and Paragon's users are very small in Japan. Therefore, we published 'Guide to Development of a Scalar Massive Parallel Programming on Paragon' in JAERI-Data/Code 98-030. In this report, the method of stable and faster I/O is shown with sample programs by fortran and c. (author)