Developing Open Source in Service to National Security - ORNL Visit

Ever wondered what software gets developed at a national laboratory? Thanks to the open source efforts of LLNL, you don't have to wonder any longer!

This talk will highlight the ongoing expansion of the open source community inside one Department of Energy research lab. These developers bring software and tools which support science and security, issues of national importance, into the open source community. The talk will also describe the unique challenge of bringing decades old software projects and historically closed source developers into the open source community for the first time.

-- Updated version of slides presented at ORNL in June 2017 --

Transcript

1. LLNL-PRES-702741
   This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory
   under contract DE-AC52-07NA27344. Lawrence Livermore National Security, LLC
   Developing Open Source
   in Service to National Security
   ORNL Visit
   Ian Lee
   Lawrence Livermore National Laboratory
   June 28, 2017
   

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   software.llnl.gov
   

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   https://upload.wikimedia.org/wikipedia/commons/a/a8/U.S._National_labs_map.jpg
   

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   http://www.ex-astris-scientia.org/articles/new_enterprise/enterprise-warpcore.jpg
   

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   https://pixabay.com/get/e833b10d2af4083ed1534705fb0938c9bd22ffd41db612439df7c17ba0/silos-1602209_1920.jpg
   

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   1960s 1970s 1980s 1990s 2000s 2010s
   Pioneering
   simulations of
   particle tracking
   CDC 3600
   CDC 7600
   Ozone mixing
   models
   CRAY 1
   ASCI Blue-
   Pacific
   Helping the medical
   community plan
   radiation treatment
   Unprecedented
   dislocation dynamics
   simulations
   BlueGene
   Breakthrough
   visualizations of
   mixing fluids
   Dynamics in three
   dimensions
   Global climate
   modeling
   Detailed
   predictions
   of ecosystems
   Petascale
   and exascale
   computing
   

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   § 3 out of 16 #1 systems over last 20 years
   Top500.org
   ASCI White
   Nov 2000 – Nov 2001
   BlueGene/L
   Nov 2004 – Nov 2007
   Sequoia
   June 2012
   https://www.top500.org/resources/top-systems/
   

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   TOSS – Tri-Lab Operating System Software
   § Built on Red Hat Enterprise Linux
   — Not an HPC distribution
   § Adds LLNL developed additions and
   patches to support HPC
   — Low Latency Interconnect: Infiniband
   — Parallel File System: Lustre
   — Resource Manager: SLURM
   § Work closely with open communities
   Components
   not in TOSS
   Supported Linux Commodity Hardware Platform
   Kernel, Infiniband, Message Passing Interface
   Batch Scheduler (MOAB)
   User
   Environment
   Lustre
   File Systems
   Compiler &
   Development Tools
   Resource Manager (SLURM)
   TOSS
   Components
   HPSS Hopper
   LLNL-PRES-550311
   TOSS is a software stack for HPC – large, interconnected clusters!
   

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    § Began as simple resource manager
    — Now scalable to 1.6M+ cores (sequoia)
    § Launch and manage parallel jobs
    — Large, parallel jobs, often MPI
    § Queuing and scheduling of jobs
    — Much more work than resources
    http://slurm.schedmd.com
    http://www.ibm.com/developerworks/library/l-slurm-utility/figure3.gif
    

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    http://flux-framework.github.io
    § Family of projects used to build site-customized resource management systems
    § flux-core
    — Implements the communication layer and lowest level services and interfaces
    § flux-sched
    — Consists of an engine that handles all the functionality common to scheduling
    § capacitor
    — A bulk execution manager using flux-core, handles running and monitoring 1000’s of jobs
    

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    ZFS on Linux
    http://zfsonlinux.org
    § ZFS is an open source filesystem and volume
    manager designed to address the limitations
    of existing storage solutions
    § 2011: Available for Linux
    § Ten LLNL filesystems, totaling ~ 100PB
    § Ships in Ubuntu 16.04
    

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    § Handles combinatorial explosion of
    ABI-incompatible packages
    § All versions coexist, binaries work
    regardless of user’s environment
    § Familiar syntax, reminiscent of brew, yum, etc
    $ spack install mpileaks unconstrained
    $ spack install mpileaks@3.3 @ custom version
    $ spack install mpileaks@3.3 %gcc@4.7.3 % custom compiler
    $ spack install mpileaks@3.3 %gcc@4.7.3 +threads +/- build option
    $ spack install mpileaks@3.3 os=SuSE11 os=
    $ spack install mpileaks@3.3 os=CNL10 os=
    $ spack install mpileaks@3.3 os=CNL10 target=haswell target=
    SPACK
    http://software.llnl.gov/spack
    

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    § Manages the first-ever decentralized
    database for handling climate science data
    § Multiple petabytes of data at dozens of
    federated sites worldwide
    § International collaboration for the
    software that powers most global
    climate change research
    https://github.com/ESGF
    http://esgf.llnl.gov
    

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    VisIt
    § Originally developed to visualize and
    analyze the results of terascale
    simulations
    § Interactive, scalable, visualization,
    animation and analysis tool
    § Powerful, easy to use GUI
    § Distributed and parallel architecture
    allows handling extremely large data
    sets interactively
    http://visit.llnl.gov
    

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    http://computation.llnl.gov/casc
    

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    GitHub.com/LLNL – Repositories
    

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    GitHub.com/LLNL – Languages
    

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    GitHub.com/LLNL – Stargazers
    

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    § “Federal Source Code Policy: Achieving Efficiency, Transparency, and Innovation
    through Reuseable and Open Source Software”
    — “Agencies shall make custom-developed code available for Government-wide reuse and
    make their code inventories discoverable at https://www.code.gov (“Code.gov”) […]”
    — “[…] establishes a pilot program that requires agencies, when commissioning new custom
    software, to release at least 20 percent of new custom-developed code as Open Source
    Software (OSS) […]”
    Federal Source Code Policy
    https://code.gov & https://sourcecode.cio.gov
    

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    https://code.gov
    

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    https://www.osti.gov/doecode/
    

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    US Government Organizations on GitHub
    https://government.github.com/community/
    

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25. Thank You!
    ian@llnl.gov
    @IanLee1521 // @LLNL_OpenSource
    

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