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WP4 and WP5 for AstroWise

WP4 and WP5 for AstroWise. WP4: Provide parallel processing WP5: Provide data storage. Commodity Hardware. In-a-Box initiative NCSA Alliance layered software Cluster-in-a-Box (CiB) Grid-in-a-Box (Gib) Display Wall-in-a-Box (DBox) Access Grid-in-a-Box (AGiB). Cluster-in-a-Box.

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WP4 and WP5 for AstroWise

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  1. WP4 and WP5 for AstroWise WP4: Provide parallel processing WP5: Provide data storage AstroWise pre kick-off Meeting

  2. Commodity Hardware • In-a-Box initiative • NCSA Alliance layered software • Cluster-in-a-Box (CiB) • Grid-in-a-Box (Gib) • Display Wall-in-a-Box (DBox) • Access Grid-in-a-Box (AGiB) AstroWise pre kick-off Meeting

  3. Cluster-in-a-Box • Builds on OSCAR • Simplify installing and running Linux clusters • Compatible with Alliance’s production clusters • Software foundation for • Grid toolkits • Display Walls AstroWise pre kick-off Meeting

  4. Display Wall-in-a-Box • Tiled display wall • WireGL, VNC, NCSA Pixel Blaster • Building instructions AstroWise pre kick-off Meeting

  5. Current Developments • Ongoing activities • NOVA: testbed system • Terapix: production cluster • Capodimonte: WFI processing system • USM: WFI processing system AstroWise pre kick-off Meeting

  6. Current Developments • NOVA • Leiden has 4+1 PIII PC cluster (400Mhz, 15Gb, 256 Mb, 100Mb/s) as hands-on experience • Leiden will acquire 16+1 P4 PC cluster (1.5 Ghz, 80Gb, 512 Mb, 1Gb/s-100Mb/s switched) as hands-on experience • Can postpone processing cluster to later AstroWise pre kick-off Meeting

  7. Current Developments • Terapix • Driven by spending • Concentration on high bandwidth data I/O • 32b @ 33Mhz -> 133 MB/s • 64b @ 66 Mhz -> 512 MB/s • RAID5 has 80MB/s • Nodes • 4 AMD 2 SMP 2Gb ~Tb RAID0 1Gb/s + 100Mb/s • 1 AMD 2 SMP 2 Gb ~Tb RAID5 4x1Gb/s + 100Mb/s • No software parallellization • Process fields in parallel AstroWise pre kick-off Meeting

  8. Current Developments • Capodimonte • Driven by spending • Opt for conventional system • 8 PIII 2 SMP 1 Ghz 40 Gb 512 b 100 Mb/s • 1 PIII 2 SMP 1 Ghz ~180Gb RAID 1Gb/s • Processing examples ESO beowulf system • Master Bias from 5 raw fields: 68 sec • Master Flat Field from 5 dome + 5 skyflat: 390 sec • Catalog & astrom on full cluster: 140 sec • Catalog & astrom on one single CCD on one CPU: 88 sec AstroWise pre kick-off Meeting

  9. Current Developments • USM • Driven by spending • Opt for off-the-shelf configuration • Pay for configuration/install • Pay for maintenance • Nodes • 8+1 SMP (2) 4Gb, ~100 Gb, 1 Gb/s or Myranet • 1.4 Tb datastorage • Front-end user stations AstroWise pre kick-off Meeting

  10. Parallel implementation • Single OS, multiple CPU’s • MOSIX • Fork and forget • Does load balancing, adaptive resource allocation • Cluster of Machines • MPI, PMV (Message passing) • PVFS (parallel virtual file system) • PBS (Portable Batch system) • MAUI (Job scheduling) • DIY scheduling (python sockets/pickling) AstroWise pre kick-off Meeting

  11. Parallellization • Simple scripting • Rendezvous problem • Load balancing • Data distribution/administration • Code level • MPI Programming • How deep? • Loops • Matrix splitting • Sparse array coding AstroWise pre kick-off Meeting

  12. Granularity • Coarse • Large tasks • Much comp. work • Infrequent comm. • Fine • Small tasks • Frequent comm. • Many processes AstroWise pre kick-off Meeting

  13. Focal Points • Different architectures • compare performances • time to reduce field/night • quality of calibration • Benchmark set software/data • Share experience (Exchange url’s) • hardware • processing • software (parallellization) AstroWise pre kick-off Meeting

  14. Focal Points • Time cost (unified structure for parallel processing) • software work to make parallel (burst data) • hardware possible (# nodes < 8) • Evaluate future network capacity • multiplicity • firewire AstroWise pre kick-off Meeting

  15. Focal Points • Data storage & beowulf • Are they different? • Interaction processing/mining • Who pulls the wagon • T0 + 1Q : Design review • T0 + 2Q : procurement AstroWise pre kick-off Meeting

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