SVMview: A Performance Tuning Tool for DSM-Based Parallel Computers

This paper describes a performance tuning tool, named SVMview, for DSM-based parallel computers. SVMview is a tool for doing a post-mortem analysis of page movements generated during the execution of Fortran-S programs. This tool is able to analyze some particular phenomena such as false-sharing which occurs when several processors write to the same page simultaneously. Such behavior entails badly the performance of DSM systems, and thus are particularly important to be detected. SVMview: un outil de \performance tuning" pour MVP R esum e : Ce papier d ecrit un outil de \performance tuning", appel e SVMview, pour des architectures parall eles supportant une m emoire virtuelle partag ee. SVMview est un outil permettant une analyse post-mortem des mouvements de page g en er es durant l'ex ecution d'un programme Fortran-S. Cet outil est capable d'analyser quelques ph enom enes particu-liers comme le faux-partage qui se produit lorsque plusieurs processeurs ecrivent simultan e-ment dans une m^ eme page. Il est particuli erement important de d etecter ces comportements car ils induisent une d egradation rapide du syst eme de m emoire virtuelle partag ee