1 / 12

ALICE-USA Computing Overview of Hard and Soft Computing Resources Needed to Achieve Research Goals

ALICE-USA Computing Overview of Hard and Soft Computing Resources Needed to Achieve Research Goals. Calibration Transfer Reconstruction Storage Analysis Simulations. ALICE Computing models and projections to be used where possible. EmCal Offline - Status and Plans. Geometry

lajos
Télécharger la présentation

ALICE-USA Computing Overview of Hard and Soft Computing Resources Needed to Achieve Research Goals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ALICE-USA Computing Overview of Hard and Soft Computing Resources Needed to Achieve Research Goals Calibration Transfer Reconstruction Storage Analysis Simulations ALICE Computing models and projections to be used where possible ALICE DOE Review - Computing

  2. EmCal Offline - Status and Plans • Geometry • Structures implemented • Revisit following installation • Data • Raw and Event Summary Data structures defined • Alignment • Alignment tools implemented • Revisit after survey (installation) • Calibration • Data structures defined • Procedures to be implemented • Reconstruction • First interation clusterizer implemented • Optimization underway • PID • Preliminary /h discrimination and 0 ID implemented • electron id under study ALICE DOE Review - Computing

  3. Offline FTE Projections • Totals represent only support for Physics Analysis • Current effort from LBNL, WS, Yale, UH • Some positions filled outside DOE-NP • Current Offline Coordinators : Jennifer Klay (CalPoly-NSF), Gustavo Conesa Balbastre (Frascati) ALICE DOE Review - Computing

  4. Computing Hardware Requirements • ALICE Computing Model submitted to WLCG 2007 • Based on LHC data projections * reconstruction times • ALICE-USA contribution ~ 8% (40/500 Ph.D. fraction) • Distribute 8% across four U.S. computing facilities • 4.0% NERSC direct DOE-NP investment • 1.5% TLC through UH DOE-NP proposal • 1.5% OSC through OSU NSF proposal • 1.0% LC through LLNL internal resource • Network needs are modest • total ESD data export rate is 120MB/s (4-month shutdown) • test data transfer in July for OSC, LC ALICE DOE Review - Computing

  5. NERSC Projections (Preliminary)P. Jacobs • Storage provided by NERSC allocation • 2.0 FTE support needed (RNC proposal process) ALICE DOE Review - Computing

  6. Texas Learning & Computation Center • 150 nodes Itanium and 20 nodes Opteron • HPSS, 24/7 support • TLC highly regarded for past achievements • AliEn installed and running in PDC07 • Projected total computing to be provided in UH proposal • - costs shown are for cpu only, disk match from TLC • - 0.75 FTE match from TLC for system support • - 1.0 FTE match from UH for software development ALICE DOE Review - Computing

  7. Livermore Computing (LLNL) • Assume 15% sustained use of 640 cpu Opteron cluster (equals 1% of aggregate cpu) • 24/7 support, HPSS • 700 TB green data oasis outside firewall • AliEn software install proceeding • requires LLNL account to submit jobs (AliEn compliant) • discussions underway between Jason Newby, Brian Carnes (allocations), and Jeff Long (data oasis) ALICE DOE Review - Computing

  8. Ohio Supercomputing Center (OSU) • Supported by State of Ohio, Industrial Partners, DoD • Current systems : 252 node Pentium, 260 node Itanium • AliEn software running HPSS, 24/7 support, and funding for Bjorn Neilsen on offline • New 4212 core Opteron system in 2008 • Projections beyond 2008 in OSU NSF proposal • $100k/yr and 1:1 match, or • $50k/yr and 2:1:1 match via OHIO Technical Action Fund (TAF) • Reasons to include OSU in Computing Plan • cpu/PhD ratio above ALICE-USA average • small scale DOE-NSF collaboration ALICE DOE Review - Computing

  9. Computer Hardware Summary • Summed projections meet/exceed 8% contribution by 2010 8% Total 8% Total ALICE DOE Review - Computing

  10. FTE Summary • Most is re-direction, some effort outside DOE-SC • Grid Coord. responsible for OSG interface • Additional NERSC 2.0 FTE to cover PDSF site coord. ALICE DOE Review - Computing

  11. Computing Organization Jason Newby ALICE DOE Review - Computing

  12. Risks & Mitigations • One or more facilities fall below projections • recruit additional facility, i.e. ORNL • distribute load to remaining facilities • distribute load across grid (reason for OSG work) • EmCal Offline milestones unmet (low) • redirect effort to offline Summary • EmCal Offline in respectable shape at this time • Hardware • PDSF investment plan underway • UH proposal to DOE • LC implementation making progress • OSC proposal to NSF ALICE DOE Review - Computing

More Related