1. 1 Mathematical, Information and Computational Sciences FAST-OS Workshop July 9-10, 2002 Fred Johnson

2. 2 Mathematical, Information and Computational Sciences Computer Science Research Challenge – HPC for Science is (still after fifteen years!) –Hard to use –Inefficient –Fragile –An unimportant vendor market Vision –A comprehensive, integrated software environment that enables the effective application of high performance systems to critical DOE problems Goal– Radical Improvement in –Application Performance –Ease of Use –Time to Solution Node and System Hardware Arch User Space Runtime Support OS Kernel OS Bypass Scientific Applications System Admin Software Development Chkpt/RstrtMath LibsDebuggers Viz/DataScheduler PSEsRes. MgtFramewrks Compilers Perf ToolsFile Sys Runtme Tls HPC System Elements

3. 3 Mathematical, Information and Computational Sciences New OS/Runtime Activities Base –Science Appliance –Cougar/Cplant kernel evaluation –Programming Models SciDAC – Scalable Systems Software

4. 4 Mathematical, Information and Computational Sciences Strategic Concerns DOD/NNSA/NASA –HPC for the National Security Community DOE/SC –Earth Simulator Response

5. 5 Mathematical, Information and Computational Sciences Challenges/Priorities High Performance Scalability Fault tolerance Dynamic/flexible application support –OS –Runtime –Performance tools –… ??? -- TBD