1. SCARF Duncan Tooke RAL HPCSG

2. Overview What is SCARF? Hardware & OS Management Software Users Future

3. What is SCARF? Production - service level definitions, professionally managed, user Support, application Support, integrated with other e- Science services. Grid - access should be seamless, same technology as National Grid Service (NGS) thus interoperable, integrated into CCLRC Single Sign on Project.

4. Hardware & OS 128 x Dual AMD 248 (2 x 1 core), 8GB RAM, Myrinet (A) 18 x Dual AMD 275 (2 x 2 core), 8GB RAM, Myrinet (B) 4 x Quad AMD 275 (4 x 2 core), 32GB RAM, Myrinet (B) 52 x Dual AMD 280 (2 x 2 core), 8GB RAM, Myrinet (B) 56 x Dual AMD 275 (2 x 2 core) 4GB RAM, no Myrinet 4 x File servers with 4TB RAID 5 x File servers on 70TB SAN 10GB network link (shared) RHEL 4 Globus 4 pre-web (1 system administrator)

5. Management Heterogeneous environment Need to run as a single system SCALI-Manage with single slave kickstart + common config RPM SCALI-MPI for single MPI binaries SAN + LDAP + Automount Node SAN LDAP Management

6. Software GCC, PGI, Intel C, C++, Fortran, Java MPI & Parallel debugger User generated code Popular scientific packages, e.g. GAMESS, Gaussian

7. Users 87 registered users 11 facilities 1.5 million CPU hours in the last 12 months Most are developers or experienced HPC Just starting to get Grid adopters

8. The future… Continued expansion enabled by infrastructure Development of Grid tools, e.g. automated parameter sweeping User interfaces NGS affiliation