GRISU' Open Day su Scienza ed Ingegneria dei Materiali e Grid : Napoli ENEA Grid e CRESCO in GRISU: uno strumento per la scienza dei materiali Presentazione: S. Raia, S. Migliori Collaborazioni : M. Celino, M. Gusso, P. Morvillo, A. Marabotti, L. Cavallo, F. Ragone. Outline: ENEA Grid / Cresco infrastructures Computational Capability Some examples of Material Science Codes running on ENEA

ENEA Grid infrastructures [1] ENEA -12 research centers in Italy -A Central Computer and Network Service (INFO) - 6 Computer Centres: Casaccia, Frascati, Bologna,Trisaia, Portici, Brindisi - Multiplatform resources for serial & parallel computation and graphical post-processing. - Others computer resources in ENEA: departments & individuals Salvatore Raia | GRISU' Open Day su Scienza ed Ingegneria dei Materiali e Grid | : Napoli

Main features: - Access from any kind of connection - Sharing data in world wide areas (geographical file system AFS) - Access to the data from any kind of digital device client - Running any kind of programs - Access to National and International GRIDS ENEA Grid infrastructures [2] For each computational site, ENEA manages Local Networks (LAN) whereas the computational centres (WAN) are interconnected via Consortium GARR Network Salvatore Raia | GRISU' Open Day su Scienza ed Ingegneria dei Materiali e Grid | : Napoli

O.S.#CPU/CoreGflops…where AIX> Frascati(258), Bologna(24), Portici(18),Brindisi(2) Linux x86 32/64> Frascati(140), Casaccia(54), Portici(2700),Trisaia(20), Brindisi(84) Linux IA64 (Altix)64300 Casaccia IRIX 2640 Frascati(8), Casaccia(4), Portici(1),Trisaia(8), Brindisi(1), Bologna(5) Solaris 810Trisaia(4), Casaccia(2), Bologna(2) Windows 32/ Frascati(4), Portici(34),Trisaia(4), Brindisi(4) Mac OS X1460Frascati(1), Trisaia(13) ENEA Grid computatonal resources [4] Salvatore Raia | GRISU' Open Day su Scienza ed Ingegneria dei Materiali e Grid | : Napoli

ENEA-GRID Data archives Colleagues & 3D Software catalogs Computers Application Fabric Connectivity Resource Collective User ENEA Grid Architecture & resources integration [3] *A choice of mature components for reliability and easiness of support and maintenance: Distributed File System: AFS Job and resources manager: LSF Multicluster Unified GUI access: Java and Citrix Technologies Quality monitoring system: Patrol Licence Servers Salvatore Raia | GRISU' Open Day su Scienza ed Ingegneria dei Materiali e Grid | : Napoli * Integration with department and individual resources Distributed File System: AFS Licence pool sharing * Possible integration with other institutions

Portici LAN Interconnessione InfiniBand 4XDDR SERVER GPFS 4 Nodi IBM 3650 IB FC Sistema Dischi ad alta velocità 2 GByte/s 160 TByte IBM/DDN 9550 Sistema backup 300 TByte IBM Tape Library TS3500 con 4 drive SERVER BACKUP 3 Nodi IBM 3650 FC IB GARR (WAN) Sezione 1 (Grande Memoria) 42 Nodi SMP IBM x3850-M2 con 4 Xeon Quad-Core Tigerton E7330 (32/64 GByte RAM 2.4GHz/ 1066MHz/6MB L2) per un totale di 672 core Intel Tigerton Sezione 3 (Speciale) 4 Nodi blades IBM QS21 con 2 Cell BE Processors 3.2 Ghz each. 6 Nodi IBM x3755, 8 Core AMD 8222 con una scheda FPGA VIRTEX5 4 Nodi IBM x 3755, 8 core AMD 8222 con schede NVIDIA Quadro FX 4500 X2 4 Nodi windows 8 core 16 Byte RAM Doppia Intercconnessione a 1 Gbit 1 Rete a 1 Gbit di gestione Sezione 2 (Alto Parallelismo) 256 Nodi blades IBM HS21 con 2 Xeon Quad-Core Clovertown E5345 (2.33GHz/1333MHz /8MB L2), 16 GB RAM per un totale di 2048 core Intel Clovertown 4x10 Gbits 2000 Mbits 35 Nodi di Servizio Server di : Front-end insallazione AFS … CRESCO (Portici site) computatonal resources [5] Salvatore Raia | GRISU' Open Day su Scienza ed Ingegneria dei Materiali e Grid | : Napoli

Multicores Platforms (Cresco Linux, sp AIX) : 8, 16, 32, 48 smp nodes GPFS / Infiniband for high parallelism codes Hybrid Parallelism (Cresco smp nodes with IB interconnections) Distributed parallel Jobs across WAN or heterogeneous platforms (Parallel Jobs arrays (AFS sysname mechanism)) Nvidia / Cell processor / FPGA accelerators (…next) Some Codes running in ENEA env.: CPMD Gromacs Pc Gamess Gaussian…. …. others: Abinit, Amber, etc … ENEA Grid / Cresco Capability for Material Science codes: Salvatore Raia | GRISU' Open Day su Scienza ed Ingegneria dei Materiali e Grid | : Napoli

Gromacs Salvatore Raia | GRISU' Open Day su Scienza ed Ingegneria dei Materiali e Grid | : Napoli GROMACS is a versatile package to perform molecular dynamics, i.e. simulate the Newtonian equations of motion for systems with hundreds to millions of particles. It is primarily designed for biochemical molecules like proteins and lipids that have a lot of complicated bonded interactions, but it can be used also for research on non-biological systems, e.g. polymers. Dimeric protein + water + ions: ~77000 atoms Timescale of simulation: 5 ns Simulation made on 16 cores on Cresco1, Time required: 40 h. Peptide + water + ions: ~2500 atoms Timescale of simulation: 40 ns Time required: 24 h (on 8 cores smp Intel Xeon)

PC GAMESS / Firefly PC GAMESS/Firefly: computational Chemistry code for ab initio and DFT calculations. Developed for high performance calculation on Intel processors (x86, AMD64, and EM64T). Used on CRESCO for studying electronic proprieties and absorption spectrum of molecules in the photovoltaic field. On Cresco: Performances improvement of 370% (16 cores) compared to runs on PC Desktop quad core. Salvatore Raia | GRISU' Open Day su Scienza ed Ingegneria dei Materiali e Grid | : Napoli modello TDDFT B3LYP/6-311G* N. cores (MPI procs)Elapsed Time ( min.)

Starting from the basic laws of quantum mechanics, Gaussian is used to predicts the energies, molecular structures, and vibrational frequencies of molecular systems, along with numerous molecular properties derived from these basic computation types. It is used to study molecules and reactions under a wide range of conditions, including both stable species and compounds which are difficult or impossible to observe experimentally. On CRESCO is used to study proteins folding: On shared memory Embarrassing parallel: array of parallel jobs on 8 cores smp nodes. Gaussian 03: electronic structure program. Salvatore Raia | GRISU' Open Day su Scienza ed Ingegneria dei Materiali e Grid | : Napoli 8 / 16 MPI procs Parallel_job[1] Parallel_job[2] Parallel_job[N] Inp.[N] Inp.[2] Inp.[1]

CPMD: Car-Parrinello Molecular Dynamics Extented tests in order to: 1- Scaling performances up to 1024 cores 2- Exploiting Dual-level Parallelism 3- Outer loop parallelization: TASKSGROUPS Total tasks MPI : Threads TASKS GROUPS Iterations / sec : :1NO : :2NO : :4NO It is a plane wave/pseudopotential implementation of Density Functional Theory, particularly designed for ab-initio molecular dynamics. Salvatore Raia | GRISU' Open Day su Scienza ed Ingegneria dei Materiali e Grid | : Napoli

Conclusions … References in ENEA … Some Example Codes running in ENEA env.: CPMD Gromacs Pc Gamess Gaussian Some Example Codes running in ENEA env.: CPMD Gromacs Pc Gamess Gaussian Salvatore Raia | GRISU' Open Day su Scienza ed Ingegneria dei Materiali e Grid | : Napoli