Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Bitpit
open-in-new
<h2 id="features-and-modules">Features and modules</h2> <p>Features and the modules of bitpit include: </p> <ul><li>Cartesian and unstructured volume and surface meshes</li> <li>Parallel linear quadtree/octree with <a href="/facts/Load_balancing_(computing)/jddk6ang">load balancing</a> and 2:1 balancing (PABLO <a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a><a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a><a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a><a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a><a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a><a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a><a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a><a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a><a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a> - PArallel Balanced Linear Octree)</li> <li>Basic container object for different types of meshes (surface and volume) which allows the concomitant use of more than one mesh at the same time</li> <li>Methods for the evaluation of signed and unsigned distance functions from generic objects immersed in a computational mesh</li> <li>Basic algebraic operators (<a href="/facts/Addition/apFWJBFB">Addition</a>, <a href="/facts/Subtraction/dEUrp6k0">subtraction</a>, <a href="/facts/Multiplication/VtcUjpNv">multiplication</a>, <a href="/facts/Division_(mathematics)/FqLKNkmq">division</a>), mathematical functions (<a href="/facts/Dot_product/tNz8MLjT">dot product</a>, <a href="/facts/Cross_product/uRBJzkcW">cross product</a>, <a href="/facts/Norm_(mathematics)/xIbR4uE1">norm</a>, <a href="/facts/Absolute_value/dwJBpEs5">absolute value</a>), <a href="/facts/Stream/S5he7Cuo">stream</a> operators and display functions for some of the <a href="/facts/Standard_Template_Library/IxqpRzWU">Standard Template Library</a> (STL) <a href="/facts/Containers/yDfwMWvW">containers</a></li> <li>A collection of useful <a href="/facts/Containers/yDfwMWvW">containers</a> for scientific applications.</li> <li>binary <a href="/facts/Data_buffer/tVy4j2Dc">buffers</a> for <a href="/facts/Parallel_communication/9quqJd8G">parallel data exchange</a> and high level methods for handling <a href="/facts/Message_Passing_Interface/BEuBgDpm">MPI</a> parallel communications.</li> <li>methods for reading and writing common data files, like DGF (Dune Grid Format), <a href="/facts/STL_(file_format)/IGvbNCYE">STL</a> (STereo Litography) and <a href="/facts/VTK/SXTm1vTl">VTK</a> (Visualization ToolKit) files, and for handling <a href="/facts/Logfile/p7FHf8mA">logfiles</a>.</li> <li>tools for handling and solving small dense <a href="/facts/Linear_system/uEl20Kc1">linear systems</a>.</li> <li><a href="/facts/Radial_Basis_Function/QnWM1mBN">Radial Basis Function</a> <a href="/facts/Interpolation/8PyetX4f">interpolation</a> and <a href="/facts/Parameter/zFvVFMv9">parametrization</a> even with large set of nodes.</li> <li><a href="/facts/Sorting_algorithms/PwHpj1Gs">Sorting algorithms</a> (<a href="/facts/Stack_(abstract_data_type)/bj7l94v1">LIFO</a>, <a href="/facts/Kd-tree/XuhcfKKq">kd-tree</a>, and <a href="/facts/Binary_tree/TDV7GMpu">binary tree</a>)</li> <li>A <a href="/facts/Computational_geometry/eeaotQtl">computational geometry</a> methods collection</li></ul> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/Polygon_mesh/6WLD80ER">Meshes</a></li> <li><a href="/facts/Octree/hNT74wvT">Octree</a></li> <li><a href="/facts/Linear_Algebra/8VaB4VWk">Linear Algebra</a></li></ul> <h2 id="external-links">External links</h2> <ul><li><a href="http://bitpit.it">The Official bitpit web site</a></li> <li><a href="https://github.com/optimad/bitpit">The bitpit Github repository</a></li> <li><a href="https://github.com/uncleTes/fv_approach">A Python API for bitpit</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>H. Telib, bitpit: a numerical sandpit for bridging scientific computing and industrial applications, Abstract, SISSA Trieste, Tuesday, 23 September 2014 <a href="http://mathlab.sissa.it/bitpit-numerical-sandpit-bridging-scientific-computing-and-industrial-applications" target="_blank">http://mathlab.sissa.it/bitpit-numerical-sandpit-bridging-scientific-computing-and-industrial-applications</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>M. Cisternino, A. Iollo, L. Weynans, A. Colin, P. Poulin. Electrostrictive materials: modelling and simulation , in: 7 th European Congress on Computational Methods in Applied Sciences and Engineering, Hersonissos, Greece, ECCOMAS, June 2016. Abstract <a href="https://www.eccomas2016.org/proceedings/pdf/10791.pdf" target="_blank">https://www.eccomas2016.org/proceedings/pdf/10791.pdf</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>M. Cisternino, E. Lombardi, PABLO - Open source PArallel Balanced Linear Octree, an industrial tool for scientific computing. JDEV 2015, Bordeaux, France. Poster <a href="http://devlog.cnrs.fr/_media/jdev2015/poster_jdev2015_pablo_marco_cisternino.pdf?id=jdev2015%3Aposters&cache=cache" target="_blank">http://devlog.cnrs.fr/_media/jdev2015/poster_jdev2015_pablo_marco_cisternino.pdf?id=jdev2015%3Aposters&cache=cache</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>H.Telib, M. Cisternino, V. Ruggiero, F. Bernard, RAPHI: Rarefied Flow Simulations on Xeon Phi Architecture, SHAPE White Papers, PRACE Download <a href="http://www.prace-ri.eu/IMG/pdf/WP215.pdf" target="_blank">http://www.prace-ri.eu/IMG/pdf/WP215.pdf</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Project Team MEMPHIS - INRIA, Activity Report 2016, Bordeaux,France. Paper <a href="https://raweb.inria.fr/rapportsactivite/RA2016/memphis/memphis.pdf" target="_blank">https://raweb.inria.fr/rapportsactivite/RA2016/memphis/memphis.pdf</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>A. Raeli, A. Azaïez, M. Bergmann, A. Iollo. Numerical Modelling for Phase Change Materials. CANUM, May 2016, Obernai, France. Presentation <a href="https://hal.inria.fr/hal-01404977/file/Matrice.pdf" target="_blank">https://hal.inria.fr/hal-01404977/file/Matrice.pdf</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>F. Tesser, Discretization of the Laplacian operator using a multitude of overlapping cartesian grids, Sessions, EuroSciPy 2016, Erlangen, Germany <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>F. Bernard, A. Iollo, S. Riffaud. Reduced-order model for the BGK equation based on POD and optimal transport, Journal of Computational Physics, Elsevier, 2018, 373, pp.545-570 [1] <a href="https://hal.archives-ouvertes.fr/hal-01943540" target="_blank">https://hal.archives-ouvertes.fr/hal-01943540</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>F. Bernard, A. Iollo, G. Puppo. BGK Polyatomic Model for Rarefied Flows, Journal of Scientific Computing, Springer Verlag, 2019, 78(3) [2] <a href="https://hal.inria.fr/hal-02419447" target="_blank">https://hal.inria.fr/hal-02419447</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> <li id="fn:10"><p>E. Abbate, A. Iollo, G. Puppo. An asymptotic-preserving all-speed scheme for fluid dynamics and non linear elasticity, SIAM Journal on Scientific Computing, Society for Industrial and Applied Mathematics, 2019 [3] <a href="https://hal.archives-ouvertes.fr/hal-02373325" target="_blank">https://hal.archives-ouvertes.fr/hal-02373325</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></p></li> </ol>