\contentsline {section}{\numberline {1}Key Difficulties in HPC Applications}{3} \contentsline {section}{\numberline {2}Applications Characteristics that drive HPCC Requirements}{5} \contentsline {section}{\numberline {3}Vignettes in HPCC Applications}{5} \contentsline {subsection}{\numberline {3.1}Real-Time Embedded Systems}{6} \contentsline {subsection}{\numberline {3.2}Aerospace Engineering}{7} \contentsline {subsection}{\numberline {3.3}Structural Engineering}{8} \contentsline {subsection}{\numberline {3.4}Government Intervention Scenarios}{9} \contentsline {section}{\numberline {4}Contrasts between USA and European Computer Usage}{10} \contentsline {section}{\numberline {5}Applications Enhancement by Systems Software Improvement}{11} \contentsline {section}{\numberline {6}Working Group 2 Conclusions and Recommendations}{12} \contentsline {section}{\numberline {A}Applications Categories}{12} \contentsline {section}{\numberline {B}Participants of Working Group 2}{14}