Running the FIM and NIM Weather Models on GPUs
|
|
- Elizabeth Bradford
- 6 years ago
- Views:
Transcription
1 Running the FIM and NIM Weather Models on GPUs Mark Govett Tom Henderson, Jacques Middlecoff, Jim Rosinski, Paul Madden NOAA Earth System Research Laboratory
2 Global Models 0 to 14 days 10 to 30 KM resolution 1000 CPU cores Hurricane Sandy NOAA FIM (and other) models accurately predict hurricane track 5 days ahead
3 Regional Models 0 to 48 hours 1 to 3 KM resolution 1000 CPU cores Hurricane Sandy HRRR model consistently predicted gusts above 70 knots from the southeast over the New York area up to 15 hours in advance.
4 Global Cloud Resolving Models 2-4 KM resolution Minimum of 80,000 CPUs to run ~50 percent of real-time Need to get to 1-2 percent of real time for NWS Model Developments NIM: NOAA ESRL USA MPAS: NCAR USA NICAM: JAMSTEC Japan ICON DWD Germany CubeSphere NASA USA Icosahedral Grid Other efforts under early development world wide Key ingredient is massive amounts of computing Estimated 200,000 to 300,000 CPU cores to be useful
5 F2C-ACC Fortran GPU Compiler Developed in 2009, before commercial compilers were available Used to parallelize NIM & FIM dynamics Focus on minimizing changes to preserve original code Single source to preserve performance portability Run on CPU, GPU, serial, parallel Advanced capabilities to preserve single source, improve performance Used to evaluate commercial compilers 2011: evaluated CAPS, PGI (Henderson) 2012: shared stand-alone tests with all the vendors performance, correctness, language support Plan another evaluation in 2013
6 Why is single source so Important? Models are increasingly complex Modeling Systems Significant and cost effort to develop and maintain over lifecycle Must be performance portable & interoperable Support research and operational use Super Computers NCEP Operations Oak Ridge E N S E M B L E S HYCOM WRF GFS FIM NIM physics dynamics chemistry Computing systems are becoming more diverse Intel, AMD, IBM-Power, + GPU, Intel MIC, +? Interoperabilty DoE Titan 20 PFlops (2013) West Virginia Boulder NCAR MIC Cluster TACC (2013)
7 OpenMP / F2C-ACC GPU Kernel Placement of directives are generally in the same location for GPU directives & OMP OMP: Need to have sufficient work to overcome startup overhead Data movement is implicit F2C accelerator model assumes data resides on CPU!$OMP PARALLEL DO PRIVATE (k, ) SCHEDULE (runtime)!acc$region(<nvl>,<ime-ims+1>) BEGIN!ACC$DO PARALLEL(1) do ipn=ips,ipe!acc$do VECTOR(1) do k=1,nvl worka(k,ipn) = tr3d(k,ipn,1) end do end do!acc$region END!OMP END PARALLEL DO
8 OpenACC GPU Kernel Unclear how OpenACC compilers handles data movement Explicitly listing each variable for each region can be tedious particularly if the region is big and complicated Unclear how if OpenACC compilers support Fortran 90 syntax Compiler analysis could determine parallelism implicitly!$acc DATA [copyin] [copyout]!$acc PARALLEL [ gang ] [ worker ] [ vector ]! worka(:,:) = tr3d(:,:,1)!unclear if openacc can handle this!$acc LOOP [gang] [worker] [vector] do ipn=ips,ipe!$acc LOOP [gang] [worker] [vector] do k=1,nvl worka(k,ipn) = tr3d(k,ipn,1) end do end do!$acc END PARALLEL
9 FIM Parallelization for Fine-Grain Well established code Designed in 2000 for CPUs Near operational status Running daily at 10, 15, 30 KM resolutions Multi-faceted development Ensembles, chemistry, ocean Code Structure Fortran Modules Deeper call tree than NIM Limited ability to change the code Demonstrate performance benefit No degradation in clarity of code Otherwise scientists must evaluate lat-lon a ( k, i, j ) FIM: k a [ k, indx) Parallelism - Dynamics GPU Blocking in horizontal Threading in vertical OpenMP, MIC Threading in horizontal Vectorize in vertical i
10 Validation of Results Before CUDA V4.3, digits of accuracy were used to compare FIM / NIM results between the CPU and GPU, MIC Variable Ndifs RMS (1) RMSE max DIGITS rublten E E E-05 5 rvblten E E E-04 4 exch_h E E E-05 5 hpbl E E E-04 4 Small differences for 1 timestep can become significant when running a model over many timesteps Now model results are identical (Intel, MIC, NVIDIA) When the fused multiply-add instruction is turned off Eliminates truncation of arithmetic operations Significantly speeds parallelization and detects synchronization bugs Exceptions: Power, log functions and likely other intrisics System versions replaced by a library routine and used for correctness tests
11 FIM Performance Single Socket No changes to the FIM source code GPU timings used F2C-ACC compiler Optimized for Fermi GPU, further optimizations for Kepler needed Code changes need to improve hybgen performance (currently >50% of GPU runtime) FIM Dynamics Routines NVIDIA Fermi GPU 1 socket Intel CPU SandyBridge 1 socket Intel Xeon Phi KNC 1 socket NVIDIA Kepler GPU Early Results trcadv (1.9) 0.99 (2.0) cnuity (2.3) 0.68 (1.8) momtum (2.1) 0.35 (2.1) hybgen (1.3) 3.43 (1.2) TOTAL (1.5) 6.30 (1.4)
12 NIM Parallelization for Fine Grain Uniform, hexagonal-based, icosahedral grid Novel indirect addressing scheme permits concise, efficient code Designed for fine-grain parallel in 2008 Dynamics Running on GPU, CPU, serial, parallel-mpi, openmp, MIC soon Physics: GFS, YSU OpenMP, MIC, GPU parallelization planned Testing at 120, 60, 30km Aqua-Planet to 300 days Testing at 120, 60 KM real data runs j k ipn NIM: a ( k, ipn ) k lat-lon a ( k, i, j ) NIM: i a [ k, indx) Parallelism - Dynamics GPU Blocking in horizontal Threading in vertical OpenMP, MIC Threading in horizontal Vectorize in vertical
13 NIM Serial Performance (2013) No changes to the source code Single Socket Performance 10K horizontal points, 96 vertical levels Very efficient CPU performance Measured 29% of peak performance (Intel Westmere) NIM Opteron Westmere SandyBridge Fermi K20x runtime Parallel performance Being run on up to 160 GPUs Working on optimizing inter-gpu communications
14 GPU to GPU Communications Scalable Modeling System Distributed memory parallelization Directive-based Fortran compiler and MPI-based runtime library Used at NOAA for over 2 decades Extended to support inter GPU communications!sms$exchange(a,b) #1 GPU pack #5 GPU unpack #2 copy to CPU #4 copy to GPU CPU #2 SMS #3 MPI-based communications CPU #1
15 NIM Parallel Performance Weak Scaling 4096 columns / GPU, 96 vertical levels, 7000 time steps (~10 days) Kepler K20x Initial Results Over 50% of the run time was spent doing GPU-to-GPU communications Number of Kepler GPUs GPU to GPU Communications (57%) (57%) (57%) 1890 Total Time In Seconds Comm Function 160 GPUs Initialization 3 Pack Data on GPU 861 CPU GPU Copy 59 MPI Communications 82 UnPack on GPU 77 Total Time 1082 Total Time
16 NIM Parallel Performance Weak Scaling with Communications Optimization Moved collective operation to the CPU instead of doing it on the GPU using GPU MappedMemory Too many small writes across the PCIe bus Resulted in a 5-17x speedup for the UnPack Operation GPUs GPU to GPU Comm Time (22%) (23%) (24%) 1076 Total Time Time (sec) Operation Time Iniitilalization 3 ( 1%) Pack Data on GPU 45 (17%) CPU GPU Copy 59 (22%) MPI Comms 82 (31%) UnPack on GPU 77 (29%) Total 266
17 3.5KM NIM on Titan in 2013 Dynamics on GPU, Physics on CPU + OMP GPU CPU Dynamics GPU to CPU Physics CPU To GPU Dynamics 10 day forecast, ~10,000 horizontal points / GPU Resolution KM Vertical Levels GPUs Dynamics CPU-GPU Transfer Physics Total Time hours (7.2%) (3.6%) (3.6%)
Parallelization of the NIM Dynamical Core for GPUs
Xbox 360 CPU Parallelization of the NIM Dynamical Core for GPUs Mark Govett Jacques Middlecoff, Tom Henderson, JimRosinski, Craig Tierney Bigger Systems More oeexpensive e Facilities Bigger Power Bills
More informationProgress on GPU Parallelization of the NIM Prototype Numerical Weather Prediction Dynamical Core
Progress on GPU Parallelization of the NIM Prototype Numerical Weather Prediction Dynamical Core Tom Henderson NOAA/OAR/ESRL/GSD/ACE Thomas.B.Henderson@noaa.gov Mark Govett, Jacques Middlecoff Paul Madden,
More informationCPU GPU. Regional Models. Global Models. Bigger Systems More Expensive Facili:es Bigger Power Bills Lower System Reliability
Xbox 360 Successes and Challenges using GPUs for Weather and Climate Models DOE Jaguar Mark GoveM Jacques Middlecoff, Tom Henderson, Jim Rosinski, Craig Tierney CPU Bigger Systems More Expensive Facili:es
More informationSuccesses and Challenges Using GPUs for Weather and Climate Models
Successes and Challenges Using GPUs for Weather and Climate Models Mark Gove; Tom Henderson, Jacques Middlecoff, Jim Rosinski NOAA Earth System Research Laboratory GPU Programming Approaches Language Approach
More informationRunning the NIM Next-Generation Weather Model on GPUs
Running the NIM Next-Generation Weather Model on GPUs M.Govett 1, J.Middlecoff 2 and T.Henderson 2 1 NOAA Earth System Research Laboratory, Boulder, CO, USA 2 Cooperative Institute for Research in the
More informationA 3-D Finite-Volume Nonhydrostatic Icosahedral Model (NIM) Jin Lee
A 3-D Finite-Volume Nonhydrostatic Icosahedral Model (NIM) Jin Lee Earth System Research Laboratory(ESRL) Director Dr. A.E. (Sandy) MacDonald GFDLNSSLARLAOMLGLERLPMEL Aeronomy Lab. Climate Diagnostic center
More informationPorting and Tuning WRF Physics Packages on Intel Xeon and Xeon Phi and NVIDIA GPU
Porting and Tuning WRF Physics Packages on Intel Xeon and Xeon Phi and NVIDIA GPU Tom Henderson Thomas.B.Henderson@noaa.gov Mark Govett, James Rosinski, Jacques Middlecoff NOAA Global Systems Division
More informationProgress Porting and Tuning NWP Physics Packages on Intel Xeon Phi
Progress Porting and Tuning NWP Physics Packages on Intel Xeon Phi Tom Henderson Thomas.B.Henderson@noaa.gov Mark Govett, Jacques Middlecoff James Rosinski NOAA Global Systems Division Indraneil Gokhale,
More informationHybrid KAUST Many Cores and OpenACC. Alain Clo - KAUST Research Computing Saber Feki KAUST Supercomputing Lab Florent Lebeau - CAPS
+ Hybrid Computing @ KAUST Many Cores and OpenACC Alain Clo - KAUST Research Computing Saber Feki KAUST Supercomputing Lab Florent Lebeau - CAPS + Agenda Hybrid Computing n Hybrid Computing n From Multi-Physics
More informationPERFORMANCE PORTABILITY WITH OPENACC. Jeff Larkin, NVIDIA, November 2015
PERFORMANCE PORTABILITY WITH OPENACC Jeff Larkin, NVIDIA, November 2015 TWO TYPES OF PORTABILITY FUNCTIONAL PORTABILITY PERFORMANCE PORTABILITY The ability for a single code to run anywhere. The ability
More informationStan Posey, NVIDIA, Santa Clara, CA, USA
Stan Posey, sposey@nvidia.com NVIDIA, Santa Clara, CA, USA NVIDIA Strategy for CWO Modeling (Since 2010) Initial focus: CUDA applied to climate models and NWP research Opportunities to refactor code with
More informationProgramming Models for Multi- Threading. Brian Marshall, Advanced Research Computing
Programming Models for Multi- Threading Brian Marshall, Advanced Research Computing Why Do Parallel Computing? Limits of single CPU computing performance available memory I/O rates Parallel computing allows
More informationDeutscher Wetterdienst
Porting Operational Models to Multi- and Many-Core Architectures Ulrich Schättler Deutscher Wetterdienst Oliver Fuhrer MeteoSchweiz Xavier Lapillonne MeteoSchweiz Contents Strong Scalability of the Operational
More informationINTRODUCTION TO OPENACC. Analyzing and Parallelizing with OpenACC, Feb 22, 2017
INTRODUCTION TO OPENACC Analyzing and Parallelizing with OpenACC, Feb 22, 2017 Objective: Enable you to to accelerate your applications with OpenACC. 2 Today s Objectives Understand what OpenACC is and
More informationNVIDIA Update and Directions on GPU Acceleration for Earth System Models
NVIDIA Update and Directions on GPU Acceleration for Earth System Models Stan Posey, HPC Program Manager, ESM and CFD, NVIDIA, Santa Clara, CA, USA Carl Ponder, PhD, Applications Software Engineer, NVIDIA,
More informationS Comparing OpenACC 2.5 and OpenMP 4.5
April 4-7, 2016 Silicon Valley S6410 - Comparing OpenACC 2.5 and OpenMP 4.5 James Beyer, NVIDIA Jeff Larkin, NVIDIA GTC16 April 7, 2016 History of OpenMP & OpenACC AGENDA Philosophical Differences Technical
More informationTowards Exascale Computing with the Atmospheric Model NUMA
Towards Exascale Computing with the Atmospheric Model NUMA Andreas Müller, Daniel S. Abdi, Michal Kopera, Lucas Wilcox, Francis X. Giraldo Department of Applied Mathematics Naval Postgraduate School, Monterey
More informationTrends in HPC (hardware complexity and software challenges)
Trends in HPC (hardware complexity and software challenges) Mike Giles Oxford e-research Centre Mathematical Institute MIT seminar March 13th, 2013 Mike Giles (Oxford) HPC Trends March 13th, 2013 1 / 18
More informationPorting COSMO to Hybrid Architectures
Porting COSMO to Hybrid Architectures T. Gysi 1, O. Fuhrer 2, C. Osuna 3, X. Lapillonne 3, T. Diamanti 3, B. Cumming 4, T. Schroeder 5, P. Messmer 5, T. Schulthess 4,6,7 [1] Supercomputing Systems AG,
More informationTitan - Early Experience with the Titan System at Oak Ridge National Laboratory
Office of Science Titan - Early Experience with the Titan System at Oak Ridge National Laboratory Buddy Bland Project Director Oak Ridge Leadership Computing Facility November 13, 2012 ORNL s Titan Hybrid
More informationTimothy Lanfear, NVIDIA HPC
GPU COMPUTING AND THE Timothy Lanfear, NVIDIA FUTURE OF HPC Exascale Computing will Enable Transformational Science Results First-principles simulation of combustion for new high-efficiency, lowemision
More informationGPU Developments for the NEMO Model. Stan Posey, HPC Program Manager, ESM Domain, NVIDIA (HQ), Santa Clara, CA, USA
GPU Developments for the NEMO Model Stan Posey, HPC Program Manager, ESM Domain, NVIDIA (HQ), Santa Clara, CA, USA NVIDIA HPC AND ESM UPDATE TOPICS OF DISCUSSION GPU PROGRESS ON NEMO MODEL 2 NVIDIA GPU
More informationCray OpenACC Case Studies
Cray OpenACC Case Studies Eric Dolven Cray, Inc 1 Outline vdmintv Excerpted from NIM (Non-hydrostatic Icosahedral Model) dynamics, developed at NOAA ESRL F2C-ACC is the standard build environment It is
More informationOpenACC. Part I. Ned Nedialkov. McMaster University Canada. October 2016
OpenACC. Part I Ned Nedialkov McMaster University Canada October 2016 Outline Introduction Execution model Memory model Compiling pgaccelinfo Example Speedups Profiling c 2016 Ned Nedialkov 2/23 Why accelerators
More informationExperiences with CUDA & OpenACC from porting ACME to GPUs
Experiences with CUDA & OpenACC from porting ACME to GPUs Matthew Norman Irina Demeshko Jeffrey Larkin Aaron Vose Mark Taylor ORNL is managed by UT-Battelle for the US Department of Energy ORNL Sandia
More informationOpenACC/CUDA/OpenMP... 1 Languages and Libraries... 3 Multi-GPU support... 4 How OpenACC Works... 4
OpenACC Course Class #1 Q&A Contents OpenACC/CUDA/OpenMP... 1 Languages and Libraries... 3 Multi-GPU support... 4 How OpenACC Works... 4 OpenACC/CUDA/OpenMP Q: Is OpenACC an NVIDIA standard or is it accepted
More informationIt s a Multicore World. John Urbanic Pittsburgh Supercomputing Center Parallel Computing Scientist
It s a Multicore World John Urbanic Pittsburgh Supercomputing Center Parallel Computing Scientist Waiting for Moore s Law to save your serial code started getting bleak in 2004 Source: published SPECInt
More informationAddressing the Increasing Challenges of Debugging on Accelerated HPC Systems. Ed Hinkel Senior Sales Engineer
Addressing the Increasing Challenges of Debugging on Accelerated HPC Systems Ed Hinkel Senior Sales Engineer Agenda Overview - Rogue Wave & TotalView GPU Debugging with TotalView Nvdia CUDA Intel Phi 2
More informationEvaluation of Asynchronous Offloading Capabilities of Accelerator Programming Models for Multiple Devices
Evaluation of Asynchronous Offloading Capabilities of Accelerator Programming Models for Multiple Devices Jonas Hahnfeld 1, Christian Terboven 1, James Price 2, Hans Joachim Pflug 1, Matthias S. Müller
More informationOpenACC. Introduction and Evolutions Sebastien Deldon, GPU Compiler engineer
OpenACC Introduction and Evolutions Sebastien Deldon, GPU Compiler engineer 3 WAYS TO ACCELERATE APPLICATIONS Applications Libraries Compiler Directives Programming Languages Easy to use Most Performance
More informationOpenACC 2.6 Proposed Features
OpenACC 2.6 Proposed Features OpenACC.org June, 2017 1 Introduction This document summarizes features and changes being proposed for the next version of the OpenACC Application Programming Interface, tentatively
More informationCMSC 714 Lecture 6 MPI vs. OpenMP and OpenACC. Guest Lecturer: Sukhyun Song (original slides by Alan Sussman)
CMSC 714 Lecture 6 MPI vs. OpenMP and OpenACC Guest Lecturer: Sukhyun Song (original slides by Alan Sussman) Parallel Programming with Message Passing and Directives 2 MPI + OpenMP Some applications can
More informationCUDA. Matthew Joyner, Jeremy Williams
CUDA Matthew Joyner, Jeremy Williams Agenda What is CUDA? CUDA GPU Architecture CPU/GPU Communication Coding in CUDA Use cases of CUDA Comparison to OpenCL What is CUDA? What is CUDA? CUDA is a parallel
More informationarxiv: v1 [hep-lat] 12 Nov 2013
Lattice Simulations using OpenACC compilers arxiv:13112719v1 [hep-lat] 12 Nov 2013 Indian Association for the Cultivation of Science, Kolkata E-mail: tppm@iacsresin OpenACC compilers allow one to use Graphics
More informationIt s a Multicore World. John Urbanic Pittsburgh Supercomputing Center Parallel Computing Scientist
It s a Multicore World John Urbanic Pittsburgh Supercomputing Center Parallel Computing Scientist Moore's Law abandoned serial programming around 2004 Courtesy Liberty Computer Architecture Research Group
More informationProductive Performance on the Cray XK System Using OpenACC Compilers and Tools
Productive Performance on the Cray XK System Using OpenACC Compilers and Tools Luiz DeRose Sr. Principal Engineer Programming Environments Director Cray Inc. 1 The New Generation of Supercomputers Hybrid
More informationLattice Simulations using OpenACC compilers. Pushan Majumdar (Indian Association for the Cultivation of Science, Kolkata)
Lattice Simulations using OpenACC compilers Pushan Majumdar (Indian Association for the Cultivation of Science, Kolkata) OpenACC is a programming standard for parallel computing developed by Cray, CAPS,
More informationProgramming NVIDIA GPUs with OpenACC Directives
Programming NVIDIA GPUs with OpenACC Directives Michael Wolfe michael.wolfe@pgroup.com http://www.pgroup.com/accelerate Programming NVIDIA GPUs with OpenACC Directives Michael Wolfe mwolfe@nvidia.com http://www.pgroup.com/accelerate
More informationDebugging CUDA Applications with Allinea DDT. Ian Lumb Sr. Systems Engineer, Allinea Software Inc.
Debugging CUDA Applications with Allinea DDT Ian Lumb Sr. Systems Engineer, Allinea Software Inc. ilumb@allinea.com GTC 2013, San Jose, March 20, 2013 Embracing GPUs GPUs a rival to traditional processors
More informationIntroduction to Parallel and Distributed Computing. Linh B. Ngo CPSC 3620
Introduction to Parallel and Distributed Computing Linh B. Ngo CPSC 3620 Overview: What is Parallel Computing To be run using multiple processors A problem is broken into discrete parts that can be solved
More informationA case study of performance portability with OpenMP 4.5
A case study of performance portability with OpenMP 4.5 Rahul Gayatri, Charlene Yang, Thorsten Kurth, Jack Deslippe NERSC pre-print copy 1 Outline General Plasmon Pole (GPP) application from BerkeleyGW
More informationOptimizing Weather Model Radiative Transfer Physics for the Many Integrated Core and GPGPU Architectures
Optimizing Weather Model Radiative Transfer Physics for the Many Integrated Core and GPGPU Architectures John Michalakes NOAA/NCEP/Environmental Modeling Center (IM Systems Group) University of Colorado
More informationPORTING CP2K TO THE INTEL XEON PHI. ARCHER Technical Forum, Wed 30 th July Iain Bethune
PORTING CP2K TO THE INTEL XEON PHI ARCHER Technical Forum, Wed 30 th July Iain Bethune (ibethune@epcc.ed.ac.uk) Outline Xeon Phi Overview Porting CP2K to Xeon Phi Performance Results Lessons Learned Further
More informationOpenACC Course Lecture 1: Introduction to OpenACC September 2015
OpenACC Course Lecture 1: Introduction to OpenACC September 2015 Course Objective: Enable you to accelerate your applications with OpenACC. 2 Oct 1: Introduction to OpenACC Oct 6: Office Hours Oct 15:
More informationFinite Element Integration and Assembly on Modern Multi and Many-core Processors
Finite Element Integration and Assembly on Modern Multi and Many-core Processors Krzysztof Banaś, Jan Bielański, Kazimierz Chłoń AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków,
More informationApplication of KGen and KGen-kernel
Application of KGen and KGen-kernel Youngsung Kim and John Dennis Sep. 14, 2016 NCAR Contents Introduction KGen kernel in practice Optimization and Porting Validation, Test collection, Profiling, etc.
More informationAdapting Numerical Weather Prediction codes to heterogeneous architectures: porting the COSMO model to GPUs
Adapting Numerical Weather Prediction codes to heterogeneous architectures: porting the COSMO model to GPUs O. Fuhrer, T. Gysi, X. Lapillonne, C. Osuna, T. Dimanti, T. Schultess and the HP2C team Eidgenössisches
More informationAdvanced OpenACC. John Urbanic Parallel Computing Scientist Pittsburgh Supercomputing Center. Copyright 2016
Advanced OpenACC John Urbanic Parallel Computing Scientist Pittsburgh Supercomputing Center Copyright 2016 Outline Loop Directives Data Declaration Directives Data Regions Directives Cache directives Wait
More informationCOMP Parallel Computing. Programming Accelerators using Directives
COMP 633 - Parallel Computing Lecture 15 October 30, 2018 Programming Accelerators using Directives Credits: Introduction to OpenACC and toolkit Jeff Larkin, Nvidia COMP 633 - Prins Directives for Accelerator
More informationJohn Levesque Nov 16, 2001
1 We see that the GPU is the best device available for us today to be able to get to the performance we want and meet our users requirements for a very high performance node with very high memory bandwidth.
More informationGPU-Powered WRF in the Cloud for Research and Operational Applications
GPU-Powered WRF in the Cloud for Research and Operational Applications John Manobianco, Chief Scientist Don Berchoff, Chief Technical Officer john@tempoquest.com, don@tempoquest.com 2017 Modeling Research
More informationSteve Scott, Tesla CTO SC 11 November 15, 2011
Steve Scott, Tesla CTO SC 11 November 15, 2011 What goal do these products have in common? Performance / W Exaflop Expectations First Exaflop Computer K Computer ~10 MW CM5 ~200 KW Not constant size, cost
More informationOpenACC2 vs.openmp4. James Lin 1,2 and Satoshi Matsuoka 2
2014@San Jose Shanghai Jiao Tong University Tokyo Institute of Technology OpenACC2 vs.openmp4 he Strong, the Weak, and the Missing to Develop Performance Portable Applica>ons on GPU and Xeon Phi James
More informationAccelerating Harmonie with GPUs (or MICs)
Accelerating Harmonie with GPUs (or MICs) (A view from the starting-point) Enda O Brien, Adam Ralph Irish Centre for High-End Computing Motivation There is constant, insatiable demand for more performance
More informationSENSEI / SENSEI-Lite / SENEI-LDC Updates
SENSEI / SENSEI-Lite / SENEI-LDC Updates Chris Roy and Brent Pickering Aerospace and Ocean Engineering Dept. Virginia Tech July 23, 2014 Collaborations with Math Collaboration on the implicit SENSEI-LDC
More informationA Simulation of Global Atmosphere Model NICAM on TSUBAME 2.5 Using OpenACC
A Simulation of Global Atmosphere Model NICAM on TSUBAME 2.5 Using OpenACC Hisashi YASHIRO RIKEN Advanced Institute of Computational Science Kobe, Japan My topic The study for Cloud computing My topic
More informationPorting the ICON Non-hydrostatic Dynamics and Physics to GPUs
Porting the ICON Non-hydrostatic Dynamics and Physics to GPUs William Sawyer (CSCS/ETH), Christian Conti (ETH), Xavier Lapillonne (C2SM/ETH) Programming weather, climate, and earth-system models on heterogeneous
More informationIt s a Multicore World. John Urbanic Pittsburgh Supercomputing Center Parallel Computing Scientist
It s a Multicore World John Urbanic Pittsburgh Supercomputing Center Parallel Computing Scientist Waiting for Moore s Law to save your serial code started getting bleak in 2004 Source: published SPECInt
More informationIs OpenMP 4.5 Target Off-load Ready for Real Life? A Case Study of Three Benchmark Kernels
National Aeronautics and Space Administration Is OpenMP 4.5 Target Off-load Ready for Real Life? A Case Study of Three Benchmark Kernels Jose M. Monsalve Diaz (UDEL), Gabriele Jost (NASA), Sunita Chandrasekaran
More informationarxiv: v1 [physics.comp-ph] 4 Nov 2013
arxiv:1311.0590v1 [physics.comp-ph] 4 Nov 2013 Performance of Kepler GTX Titan GPUs and Xeon Phi System, Weonjong Lee, and Jeonghwan Pak Lattice Gauge Theory Research Center, CTP, and FPRD, Department
More informationData Assimilation on future computer architectures
Data Assimilation on future computer architectures Lars Isaksen ECMWF Acknowledgements to ECMWF colleagues: Deborah Salmond, George Mozdzynski, Mats Hamrud, Mike Fisher, Yannick Trémolet, Jean-Noël Thepaut,
More informationDirected Optimization On Stencil-based Computational Fluid Dynamics Application(s)
Directed Optimization On Stencil-based Computational Fluid Dynamics Application(s) Islam Harb 08/21/2015 Agenda Motivation Research Challenges Contributions & Approach Results Conclusion Future Work 2
More informationOverlapping Computation and Communication for Advection on Hybrid Parallel Computers
Overlapping Computation and Communication for Advection on Hybrid Parallel Computers James B White III (Trey) trey@ucar.edu National Center for Atmospheric Research Jack Dongarra dongarra@eecs.utk.edu
More informationOpenACC (Open Accelerators - Introduced in 2012)
OpenACC (Open Accelerators - Introduced in 2012) Open, portable standard for parallel computing (Cray, CAPS, Nvidia and PGI); introduced in 2012; GNU has an incomplete implementation. Uses directives in
More informationIt s a Multicore World. John Urbanic Pittsburgh Supercomputing Center Parallel Computing Scientist
It s a Multicore World John Urbanic Pittsburgh Supercomputing Center Parallel Computing Scientist Moore's Law abandoned serial programming around 2004 Courtesy Liberty Computer Architecture Research Group
More informationParallel Computing. November 20, W.Homberg
Mitglied der Helmholtz-Gemeinschaft Parallel Computing November 20, 2017 W.Homberg Why go parallel? Problem too large for single node Job requires more memory Shorter time to solution essential Better
More informationAddressing Heterogeneity in Manycore Applications
Addressing Heterogeneity in Manycore Applications RTM Simulation Use Case stephane.bihan@caps-entreprise.com Oil&Gas HPC Workshop Rice University, Houston, March 2008 www.caps-entreprise.com Introduction
More informationOpenACC programming for GPGPUs: Rotor wake simulation
DLR.de Chart 1 OpenACC programming for GPGPUs: Rotor wake simulation Melven Röhrig-Zöllner, Achim Basermann Simulations- und Softwaretechnik DLR.de Chart 2 Outline Hardware-Architecture (CPU+GPU) GPU computing
More informationDirective-based Programming for Highly-scalable Nodes
Directive-based Programming for Highly-scalable Nodes Doug Miles Michael Wolfe PGI Compilers & Tools NVIDIA Cray User Group Meeting May 2016 Talk Outline Increasingly Parallel Nodes Exposing Parallelism
More informationTechnology for a better society. hetcomp.com
Technology for a better society hetcomp.com 1 J. Seland, C. Dyken, T. R. Hagen, A. R. Brodtkorb, J. Hjelmervik,E Bjønnes GPU Computing USIT Course Week 16th November 2011 hetcomp.com 2 9:30 10:15 Introduction
More informationUsing OpenACC in IFS Physics Cloud Scheme (CLOUDSC) Sami Saarinen ECMWF Basic GPU Training Sept 16-17, 2015
Using OpenACC in IFS Physics Cloud Scheme (CLOUDSC) Sami Saarinen ECMWF Basic GPU Training Sept 16-17, 2015 Slide 1 Background Back in 2014 : Adaptation of IFS physics cloud scheme (CLOUDSC) to new architectures
More informationCan Accelerators Really Accelerate Harmonie?
Can Accelerators Really Accelerate Harmonie? Enda O Brien, Adam Ralph Irish Centre for High-End Computing Motivation There is constant demand for more performance Conventional compute cores not getting
More informationMatrix-free multi-gpu Implementation of Elliptic Solvers for strongly anisotropic PDEs
Iterative Solvers Numerical Results Conclusion and outlook 1/18 Matrix-free multi-gpu Implementation of Elliptic Solvers for strongly anisotropic PDEs Eike Hermann Müller, Robert Scheichl, Eero Vainikko
More informationOpenACC Standard. Credits 19/07/ OpenACC, Directives for Accelerators, Nvidia Slideware
OpenACC Standard Directives for Accelerators Credits http://www.openacc.org/ o V1.0: November 2011 Specification OpenACC, Directives for Accelerators, Nvidia Slideware CAPS OpenACC Compiler, HMPP Workbench
More informationAn Introduction to the SPEC High Performance Group and their Benchmark Suites
An Introduction to the SPEC High Performance Group and their Benchmark Suites Robert Henschel Manager, Scientific Applications and Performance Tuning Secretary, SPEC High Performance Group Research Technologies
More informationParallel Applications on Distributed Memory Systems. Le Yan HPC User LSU
Parallel Applications on Distributed Memory Systems Le Yan HPC User Services @ LSU Outline Distributed memory systems Message Passing Interface (MPI) Parallel applications 6/3/2015 LONI Parallel Programming
More informationBig Data Analytics Performance for Large Out-Of- Core Matrix Solvers on Advanced Hybrid Architectures
Procedia Computer Science Volume 51, 2015, Pages 2774 2778 ICCS 2015 International Conference On Computational Science Big Data Analytics Performance for Large Out-Of- Core Matrix Solvers on Advanced Hybrid
More informationParticle-in-Cell Simulations on Modern Computing Platforms. Viktor K. Decyk and Tajendra V. Singh UCLA
Particle-in-Cell Simulations on Modern Computing Platforms Viktor K. Decyk and Tajendra V. Singh UCLA Outline of Presentation Abstraction of future computer hardware PIC on GPUs OpenCL and Cuda Fortran
More informationPiz Daint: Application driven co-design of a supercomputer based on Cray s adaptive system design
Piz Daint: Application driven co-design of a supercomputer based on Cray s adaptive system design Sadaf Alam & Thomas Schulthess CSCS & ETHzürich CUG 2014 * Timelines & releases are not precise Top 500
More informationParallel Programming. Libraries and Implementations
Parallel Programming Libraries and Implementations Reusing this material This work is licensed under a Creative Commons Attribution- NonCommercial-ShareAlike 4.0 International License. http://creativecommons.org/licenses/by-nc-sa/4.0/deed.en_us
More informationPeter Messmer Developer Technology Group Stan Posey HPC Industry and Applications
Peter Messmer Developer Technology Group pmessmer@nvidia.com Stan Posey HPC Industry and Applications sposey@nvidia.com U Progress Reported at This Workshop 2011 2012 CAM SE COSMO GEOS 5 CAM SE COSMO GEOS
More informationIntroduction: Modern computer architecture. The stored program computer and its inherent bottlenecks Multi- and manycore chips and nodes
Introduction: Modern computer architecture The stored program computer and its inherent bottlenecks Multi- and manycore chips and nodes Motivation: Multi-Cores where and why Introduction: Moore s law Intel
More informationAccelerating Financial Applications on the GPU
Accelerating Financial Applications on the GPU Scott Grauer-Gray Robert Searles William Killian John Cavazos Department of Computer and Information Science University of Delaware Sixth Workshop on General
More informationMapping MPI+X Applications to Multi-GPU Architectures
Mapping MPI+X Applications to Multi-GPU Architectures A Performance-Portable Approach Edgar A. León Computer Scientist San Jose, CA March 28, 2018 GPU Technology Conference This work was performed under
More informationParallel Computing Using OpenMP/MPI. Presented by - Jyotsna 29/01/2008
Parallel Computing Using OpenMP/MPI Presented by - Jyotsna 29/01/2008 Serial Computing Serially solving a problem Parallel Computing Parallelly solving a problem Parallel Computer Memory Architecture Shared
More informationCUDA Kernel based Collective Reduction Operations on Large-scale GPU Clusters
CUDA Kernel based Collective Reduction Operations on Large-scale GPU Clusters Ching-Hsiang Chu, Khaled Hamidouche, Akshay Venkatesh, Ammar Ahmad Awan and Dhabaleswar K. (DK) Panda Speaker: Sourav Chakraborty
More informationEfficiency and Programmability: Enablers for ExaScale. Bill Dally Chief Scientist and SVP, Research NVIDIA Professor (Research), EE&CS, Stanford
Efficiency and Programmability: Enablers for ExaScale Bill Dally Chief Scientist and SVP, Research NVIDIA Professor (Research), EE&CS, Stanford Scientific Discovery and Business Analytics Driving an Insatiable
More informationCME 213 S PRING Eric Darve
CME 213 S PRING 2017 Eric Darve Summary of previous lectures Pthreads: low-level multi-threaded programming OpenMP: simplified interface based on #pragma, adapted to scientific computing OpenMP for and
More informationGPU-optimized computational speed-up for the atmospheric chemistry box model from CAM4-Chem
GPU-optimized computational speed-up for the atmospheric chemistry box model from CAM4-Chem Presenter: Jian Sun Advisor: Joshua S. Fu Collaborator: John B. Drake, Qingzhao Zhu, Azzam Haidar, Mark Gates,
More informationTrends and Challenges in Multicore Programming
Trends and Challenges in Multicore Programming Eva Burrows Bergen Language Design Laboratory (BLDL) Department of Informatics, University of Bergen Bergen, March 17, 2010 Outline The Roadmap of Multicores
More informationGPUs and Emerging Architectures
GPUs and Emerging Architectures Mike Giles mike.giles@maths.ox.ac.uk Mathematical Institute, Oxford University e-infrastructure South Consortium Oxford e-research Centre Emerging Architectures p. 1 CPUs
More informationGPU COMPUTING AND THE FUTURE OF HPC. Timothy Lanfear, NVIDIA
GPU COMPUTING AND THE FUTURE OF HPC Timothy Lanfear, NVIDIA ~1 W ~3 W ~100 W ~30 W 1 kw 100 kw 20 MW Power-constrained Computers 2 EXASCALE COMPUTING WILL ENABLE TRANSFORMATIONAL SCIENCE RESULTS First-principles
More informationOP2 FOR MANY-CORE ARCHITECTURES
OP2 FOR MANY-CORE ARCHITECTURES G.R. Mudalige, M.B. Giles, Oxford e-research Centre, University of Oxford gihan.mudalige@oerc.ox.ac.uk 27 th Jan 2012 1 AGENDA OP2 Current Progress Future work for OP2 EPSRC
More informationAccelerator programming with OpenACC
..... Accelerator programming with OpenACC Colaboratorio Nacional de Computación Avanzada Jorge Castro jcastro@cenat.ac.cr 2018. Agenda 1 Introduction 2 OpenACC life cycle 3 Hands on session Profiling
More informationThe Era of Heterogeneous Computing
The Era of Heterogeneous Computing EU-US Summer School on High Performance Computing New York, NY, USA June 28, 2013 Lars Koesterke: Research Staff @ TACC Nomenclature Architecture Model -------------------------------------------------------
More informationPorting The Spectral Element Community Atmosphere Model (CAM-SE) To Hybrid GPU Platforms
Porting The Spectral Element Community Atmosphere Model (CAM-SE) To Hybrid GPU Platforms http://www.scidacreview.org/0902/images/esg13.jpg Matthew Norman Jeffrey Larkin Richard Archibald Valentine Anantharaj
More informationHigh Performance Computing with Accelerators
High Performance Computing with Accelerators Volodymyr Kindratenko Innovative Systems Laboratory @ NCSA Institute for Advanced Computing Applications and Technologies (IACAT) National Center for Supercomputing
More informationGPU Computing: Development and Analysis. Part 1. Anton Wijs Muhammad Osama. Marieke Huisman Sebastiaan Joosten
GPU Computing: Development and Analysis Part 1 Anton Wijs Muhammad Osama Marieke Huisman Sebastiaan Joosten NLeSC GPU Course Rob van Nieuwpoort & Ben van Werkhoven Who are we? Anton Wijs Assistant professor,
More informationUnderstanding Dynamic Parallelism
Understanding Dynamic Parallelism Know your code and know yourself Presenter: Mark O Connor, VP Product Management Agenda Introduction and Background Fixing a Dynamic Parallelism Bug Understanding Dynamic
More informationExecution Models for the Exascale Era
Execution Models for the Exascale Era Nicholas J. Wright Advanced Technology Group, NERSC/LBNL njwright@lbl.gov Programming weather, climate, and earth- system models on heterogeneous muli- core plajorms
More information