Difference between revisions of "Main Page"

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NekCEM is open source and available at https://svn.mcs.anl.gov/repos/NEKCEM for easy
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<big>'''Welcome to NekCEM'''</big>
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access to the current version. The package has a number of examples for testing the convergence
 
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and performance of the code for di�erent problem con�gurations in electromagnetics. Current
 
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capabilities include 2D/3D simulations for surface plasmonics and light transmission calculations,
 
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wakefield and wakepotential calculations, waveguides, and electric potential calculations.
 
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NekCEM is written in Fortran and C. The code uses the core infrastructure of the incompressible
 
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Navier-Stokes solver Nek5000 http://nek5000.mcs.anl.gov. NekCEM uses
 
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the distributed-memory message-passing interface (MPI) programming model and the singleprogram,
 
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multidata (SPMD) model so that each processor independently executes a copy of
 
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the same program on distinct subsets of data. NekCEM has an instruction for the following three
 
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tasks that are performed consecutively at run time: presetup, solver, and checkpointing.
 
  
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Developed at Argonne National Laboratory
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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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----
  
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<big>'''Setting for NekCEM'''</big>
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<big>'''Features'''</big>
  
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* [https://wiki.mcs.anl.gov/nekcem/index.php/Main_Page/DATA Documentation for ''data file setting'']
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* Spectral element discretizations
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* Discontinuous Galerkin approach
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* Hexahedral body conforming meshes
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* The 4th-order Runge-Kutta timestepping
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* Exponential time integrations
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* High parallel efficiency scaling over 200,000 cores
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* Parallel I/O scaling over 65,000 cores
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* Hybrid programming MPI/multithreading
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* Light transmission calculations for nanodevices
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* Wakepotential calculations for accelerator devices
  
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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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<big>'''Upcoming'''</big>
  
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* [https://wiki.mcs.anl.gov/nekcem/index.php/Main_Page/RST Documentation for ''restart'' option]
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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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* [https://wiki.mcs.anl.gov/nekcem/index.php/Main_Page/run Documentation for ''comiple and run'']
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----
  
 
<big> '''Current Developers''' </big>
 
<big> '''Current Developers''' </big>
  
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Misun Min [http://www.mcs.anl.gov/~mmin*], Jing Fu [http://www.cs.rpi.edu/~fuj/]
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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> '''Contributors''' </big>
  
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== Getting started ==
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Jing Fu (RPI), Azamat Mametjanov, Aaron Vose (Cray Inc.), John Levesque (Cray Inc.)
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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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* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
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<big> '''Related Projects''' </big>
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* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
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* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]
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NekLBM [https://neklbm.mcs.anl.gov],
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Nek5000 [https://nek5000.mcs.anl.gov]
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----
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<big> '''Related Publications''' </big>
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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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* 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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* 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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* 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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* 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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