Difference between revisions of "Main Page"

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<big>'''Features'''</big>
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<big>'''Welcome to NekCEM'''</big>
  
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NekCEM https://svn.mcs.anl.gov/repos/NEKCEM is a high-fidelity electromagnetic solver that has been developed at Mathematics and Computer Science Division of Argonne National Laboratory. It's an open source code, written by Misun Min, Jing Fu, Andreas Kloeckner in 1996-2011, with technical inputs from Paul Fischer [http://www.mcs.anl.gov/~fischer] and his incompressible Navier-Stokes solver Nek5000[http://nek5000.mcs.anl.gov].
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NekCEM https://svn.mcs.anl.gov/repos/NEKCEM is a high-fidelity, open-source electromagnetics solver based on spectral element and spectral element discontinuous Galerkin methods, written in Fortran and C. The code is actively developed at Mathematics and Computer Science Division of Argonne National Laboratory.
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The code is written in Fortran and C, using MPI for parallel communication.
 
  
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The code targets high performance high-order simulations on the advanced computer architectures for the applications in accelerator physics and nanoscience, predicting optimal designs of next-generation electromagnetic devices such as accelerator components for the International Linear Collider or the Large Hadron Collider, nanosensors for molecular detection, and photovoltaic solar cells with high energy-conversion efficiency.
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<big>'''Features'''</big>
  
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* High-order spectral element discretizations
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* Spectral element discretizations
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* Hexahedral boody conforming meshes
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* Discontinuous Galerkin approach
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* Hexahedral body conforming meshes
 
* The 4th-order Runge-Kutta timestepping  
 
* The 4th-order Runge-Kutta timestepping  
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* The high-order exponential time integration
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* Exponential time integrations
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* high parallel efficiency scaling over 100,000 cores
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* High parallel efficiency scaling over 200,000 cores  
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* parallel IO scaling over 65,000 cores
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* Parallel I/O scaling over 65,000 cores  
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* Hybrid programming MPI/multithreading
 
* Light transmission calculations for nanodevices
 
* Light transmission calculations for nanodevices
 
* Wakepotential calculations for accelerator devices
 
* Wakepotential calculations for accelerator devices
  
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<big>'''Upcoming'''</big>
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* Acoustic solver for scattering problems
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* Preconditioning with fast diagonalization method
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* Schrodinger solver for quantum dot interactions with plasmonic nanostructures
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* Drift-diffusion solver
  
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<big>'''Upcoming'''</big>
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----
  
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* Hybrid programming
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<big> '''Current Developers''' </big>
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* Parallel IO with pthreading
 
  
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Misun Min [http://www.mcs.anl.gov/~mmin], Matthew Otten (Physics/Cornell University),  Ying He (Math/UC Davis)
  
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<big>'''Instruction'''</big>
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<big> '''Contributors''' </big>
  
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* [https://wiki.mcs.anl.gov/nekcem/index.php/Main_Page/DAT Documentation for ''data file setting'']
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Jing Fu (RPI), Azamat Mametjanov, Aaron Vose (Cray Inc.), John Levesque (Cray Inc.)
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* [https://wiki.mcs.anl.gov/nekcem/index.php/Main_Page/PIO Documentation for ''parallel I/O'' option]
 
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* [https://wiki.mcs.anl.gov/nekcem/index.php/Main_Page/RST Documentation for ''restart'' option]
 
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* [https://wiki.mcs.anl.gov/nekcem/index.php/Main_Page/RUN Documentation for ''how to compile/run'']
 
  
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<big> '''Related Projects''' </big>
  
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<big> '''Current Developers''' </big>
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NekLBM [https://neklbm.mcs.anl.gov],
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Nek5000 [https://nek5000.mcs.anl.gov]
  
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Misun Min [http://www.mcs.anl.gov/~mmin], Jing Fu [http://www.cs.rpi.edu/~fuj/]
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----
  
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<big> '''Related Publications''' </big>
  
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== Getting started ==
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* Y. He, M. Min, D. Nicholls, A high-order spectral element with transparent boundary conditions for periodic layered media, 2013.
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Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.
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* M. Min and P. Fischer, An efficient high-order time integration method for spectral-element discontinuous Galerkin simulations in electromagnetics, Journal of Scientific Computing, published online, 2013.
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* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
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* M. Min, J. Fu, A. Mametjanov, Hybrid programming and performance for beam propagation modeling, Proceedings of International Computational Accelerator Physics Conference (ICAP) 2012, FRSAC1, 2012.
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* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
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* J. Fu, M. Min, R. Latham, C. Carothers, I/O Threads to reduce checkpoint blocking for an electromagnetics solver on Blue Gene/P and Cray XK6, ROSS '12 Proceedings of the 2nd International Workshop on Runtime and Operating Systems for Supercomputers in conjunction with ICS 2012, No. 2, 2012.  
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* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]
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* J. Fu, M. Min, R. Latham, C. Carothers, Parallel I/O performance for application-level checkpointing on the Blue Gene/P system, CLUSTER’11, Proceedings of the 2011 IEEE International Conference on Cluster Computing, pp. 465-473, 2011.  
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* M. Min, P. Fischer, J. Montgomery, S. K. Gray, Large-scale electromagnetic modeling based on high-order methods: Nanoscience applications, Journal of Physics: Conference Series, 180, 012016, 2009.
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* M. Min, P. Fischer, Spectral-element discontinuous Galerkin (SEDG) simulations with a moving window algorithm for wakefield calculations, Proceedings of Particle Accelerator conference (PAC09), TH5PFP037, 2009
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* M. Min, P. Fischer, Y-C. Chae, Wake fields for TESLA cavity structures: Spectral element discontinuous Galerkin simulations, Proceedings Of RF Superconductivity (SRF07), TUP34, 2007.

Latest revision as of 13:59, 18 May 2015

Welcome to NekCEM

NekCEM https://svn.mcs.anl.gov/repos/NEKCEM is a high-fidelity, open-source electromagnetics solver based on spectral element and spectral element discontinuous Galerkin methods, written in Fortran and C. The code is actively developed at Mathematics and Computer Science Division of Argonne National Laboratory.

Features

  • Spectral element discretizations
  • Discontinuous Galerkin approach
  • Hexahedral body conforming meshes
  • The 4th-order Runge-Kutta timestepping
  • Exponential time integrations
  • High parallel efficiency scaling over 200,000 cores
  • Parallel I/O scaling over 65,000 cores
  • Hybrid programming MPI/multithreading
  • Light transmission calculations for nanodevices
  • Wakepotential calculations for accelerator devices

Upcoming

  • Acoustic solver for scattering problems
  • Preconditioning with fast diagonalization method
  • Schrodinger solver for quantum dot interactions with plasmonic nanostructures
  • Drift-diffusion solver

Current Developers

Misun Min [1], Matthew Otten (Physics/Cornell University), Ying He (Math/UC Davis)

Contributors

Jing Fu (RPI), Azamat Mametjanov, Aaron Vose (Cray Inc.), John Levesque (Cray Inc.)

Related Projects

NekLBM [2], Nek5000 [3]

Related Publications

  • Y. He, M. Min, D. Nicholls, A high-order spectral element with transparent boundary conditions for periodic layered media, 2013.
  • M. Min and P. Fischer, An efficient high-order time integration method for spectral-element discontinuous Galerkin simulations in electromagnetics, Journal of Scientific Computing, published online, 2013.
  • M. Min, J. Fu, A. Mametjanov, Hybrid programming and performance for beam propagation modeling, Proceedings of International Computational Accelerator Physics Conference (ICAP) 2012, FRSAC1, 2012.
  • J. Fu, M. Min, R. Latham, C. Carothers, I/O Threads to reduce checkpoint blocking for an electromagnetics solver on Blue Gene/P and Cray XK6, ROSS '12 Proceedings of the 2nd International Workshop on Runtime and Operating Systems for Supercomputers in conjunction with ICS 2012, No. 2, 2012.
  • J. Fu, M. Min, R. Latham, C. Carothers, Parallel I/O performance for application-level checkpointing on the Blue Gene/P system, CLUSTER’11, Proceedings of the 2011 IEEE International Conference on Cluster Computing, pp. 465-473, 2011.
  • M. Min, P. Fischer, J. Montgomery, S. K. Gray, Large-scale electromagnetic modeling based on high-order methods: Nanoscience applications, Journal of Physics: Conference Series, 180, 012016, 2009.
  • M. Min, P. Fischer, Spectral-element discontinuous Galerkin (SEDG) simulations with a moving window algorithm for wakefield calculations, Proceedings of Particle Accelerator conference (PAC09), TH5PFP037, 2009
  • M. Min, P. Fischer, Y-C. Chae, Wake fields for TESLA cavity structures: Spectral element discontinuous Galerkin simulations, Proceedings Of RF Superconductivity (SRF07), TUP34, 2007.
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