Physics plans and ILDG usage

Transcription

1 Physics plans and ILDG usage in Italy Francesco Di Renzo University of Parma & INFN Parma

2 The MAIN ILDG USERS in Italy are the ROME groups A (by now) well long track of ILDG-based projects mainly within ETMC Collaboration. A long-standing course of honour (I only picked out a couple of snapshots) in n f =2 tmlqcd Physics. Current work: Clover-improved n f =2+1+1 tmlqcd regularitzation at nearly physical pion mass (a fm) This in turn asks for n f =4 RI-MOM renormalization factors (plus some quark-mass parameter tuning work) This will result in some *96 and some thousands of 24 3 *48 configurations plus maybe some hundreds (48 3 *96) propagators stored on ILDG.

3 This of course does not exhaus LQCD research in Italy but most of other research is outside ILDG core-business (finite temperature, confinement, topology ) it is nevertheless useful to point out that some other ILDG-based work is coming up ILDG parvenues in Italy Some Parma group work: finite-size effects in RI-MOM This is NSPT work, i.e. Perturbation Theory: finite size effects (above) prevent a collapse of different volumes data (black and red) points on smooths curves. A similar analysis can be performed in the nonperturbative framework! QCDSF ILDG n f =2 configurations (different volumes) can be used (and maybe some other stuff from STRONGnet collaborators of ours )

4 Computing facilities: good news! Home / Lists / November 2012 Top500 List - November 2012 R max and R peak values are in TFlops. For more details about other fields, check the TOP500 description. previous next Rank Site System Cores 1 DOE/SC/Oak Ridge National Laboratory 2 DOE/NNSA/LLNL Titan - Cray XK7, Opteron C 2.200GHz, Cray Gemini interconnect, NVIDIA K20x Cray Inc. Rmax Rpeak Power (TFlop/s) (TFlop/s) (kw) Sequoia - BlueGene/Q, Power BQC 16C GHz, Custom A BlueGene/Q system was installed at CINECA (Bologna) one year ago. CINECA is the major computing consortium in Italy (a TIER-0 site within PRACE!) 3 RIKEN Advanced Institute for Computational Science (AICS) Japan 4 DOE/SC/Argonne National Laboratory K computer, SPARC64 VIIIfx 2.0GHz, Tofu interconnect Fujitsu Mira - BlueGene/Q, Power BQC 16C 1.60GHz, Custom There is an INFN-CINECA agreement which gives us access to some BG/Q computing time. 5 Forschungszentrum Juelich (FZJ) Germany JUQUEEN - BlueGene/Q, Power BQC 16C 1.600GHz, Custom Interconnect Most of Fermi s computing power goes into PRACE allocations (so, many of you could be involved!) 6 Leibniz Rechenzentrum Germany SuperMUC - idataplex DX360M4, Xeon E C 2.70GHz, Infiniband FDR Texas Advanced Computing Center/Univ. of Texas Stampede - PowerEdge C8220, Xeon E C 2.700GHz, Infiniband FDR, Intel Xeon Phi Dell 8 National Supercomputing Center in Tianjin Tianhe-1A - NUDT YH MPP, Xeon X5670 6C 2.93 GHz, NVIDIA China NUDT 9 CINECA Fermi - BlueGene/Q, Power BQC 16C Italy 1.60GHz, Custom 10 Development Engineering DARPA Trial Subset - Power 775, POWER7 8C 3.836GHz, Custom Interconnect CEA/TGCC-GENCI Curie thin nodes - Bullx B510, Xeon E

5 Francesco Di Renzo Computing facilities: good news! (2) INFN got money from the Research Ministry (MIUR) for the SUMA project SUMA plans to support computational physics goals, and at the same time aims to explore all suitable ways in which the technological developments made at INFN can be put to good use for the present and future needs of computational physics. SUMA groups all the INFN groups active in Lattice QCD Main task for us is of course to look for (medium- and long-time) strategies to optimize LQCD codes on modern (and future) computer architectures. A concrete task: explore LQCD performances on (more or less) prototypal systems EURORA: GPU and/or MIC based system With many respects, a follow-up of AURORA QUONG: GPU based system Designed by the Rome APE-group 19th ILDG workshop