https://kalper.net/kp/tag/tokamak/ Tokamak Wowchemy (https://wowchemy.com)en-usSat, 01 Jan 2022 00:00:00 +0000 https://kalper.net/kp/media/logo_hu7c4e9283a16f91dce013794dd725bda5_36458_300x300_fit_lanczos_3.png https://kalper.net/kp/tag/tokamak/ https://kalper.net/kp/items/projects/blocktri/ Sat, 01 Jan 2022 00:00:00 +0000 https://kalper.net/kp/items/projects/blocktri/ <p>Our <strong>Block Tridiagonal Solver</strong> is one of the fastest parallel solvers for scientific codes, written in FORTRAN and MPI using the block cyclic algorithm, and tested with plasma equilibrium simulations for fusion energy tokamaks and astrophysics applications.</p> <figure id="figure-blocktri"> <div class="d-flex justify-content-center"> <div class="w-100" ><img alt="BLOCKTRI" srcset=" /kp/items/projects/blocktri/featured_hu7c548ac235c545225ff67e5aa0da2846_24058_2de6320fc3f0bee6fcb0cd810964b87a.png 400w, /kp/items/projects/blocktri/featured_hu7c548ac235c545225ff67e5aa0da2846_24058_86dec2196e6934c7730260f5d69f7755.png 760w, /kp/items/projects/blocktri/featured_hu7c548ac235c545225ff67e5aa0da2846_24058_1200x1200_fit_lanczos_3.png 1200w" src="https://kalper.net/kp/kp/items/projects/blocktri/featured_hu7c548ac235c545225ff67e5aa0da2846_24058_2de6320fc3f0bee6fcb0cd810964b87a.png" width="558" height="760" loading="lazy" data-zoomable /></div> </div><figcaption> BLOCKTRI </figcaption></figure> <h2 id="organization">Organization</h2> <ul> <li><strong>Sponsor</strong>: US Department of Energy (DOE) <ul> <li><em>Office</em>: Office of Science (SC)</li> <li><em>Program</em>: Fusion Energy and International Thermonuclear Experimental Reactor (ITER)</li> </ul> </li> <li><strong>Prime</strong>: Oak Ridge National Laboratory (ORNL)</li> </ul> <h2 id="selected-publications">Selected Publications</h2> <p> <div class="media stream-item"> <div class="media-body"> <div class="section-subheading article-title mb-0 mt-0"> <a href="https://kalper.net/kp/kp/publication/pub-005-bcyclic-jcp10/" >Bcyclic: A Parallel Block Tri-diagonal Matrix Cyclic Solver</a> </div> <a href="https://kalper.net/kp/kp/publication/pub-005-bcyclic-jcp10/" class="summary-link"> <div class="article-style"> A block tri-diagonal matrix is factored with minimal fill-in using a cyclic reduction algorithm that&hellip; </div> </a> <div class="stream-meta article-metadata"> <div> <span > <a href="https://kalper.net/kp/kp/author/steven-hirshman/">Steven Hirshman</a></span>, <span class="author-highlighted"> <a href="https://kalper.net/kp/kp/author/kalyan-perumalla/">Kalyan Perumalla</a></span>, <span > <a href="https://kalper.net/kp/kp/author/vickie-lynch/">Vickie Lynch</a></span>, <span > <a href="https://kalper.net/kp/kp/author/raul-sanchez/">Raul Sanchez</a></span> </div> </div> <div class="btn-links"> <a class="btn btn-outline-primary btn-page-header btn-sm" href="https://kalper.net/kp/kp/publication/pub-005-bcyclic-jcp10/pub-005-bcyclic-jcp10.pdf" target="_blank" rel="noopener"> PDF </a> <a href="#" class="btn btn-outline-primary btn-page-header btn-sm js-cite-modal" data-filename="/kp/publication/pub-005-bcyclic-jcp10/cite.bib"> Cite </a> </div> </div> <div class="ml-3"> <a href="https://kalper.net/kp/kp/publication/pub-005-bcyclic-jcp10/" > <img src="https://kalper.net/kp/kp/publication/pub-005-bcyclic-jcp10/featured_hud3e7bad3f62bdb4ac6ca88a7e2da6cc6_23030_150x0_resize_lanczos_1.gif" alt="Bcyclic: A Parallel Block Tri-diagonal Matrix Cyclic Solver" loading="lazy"> </a> </div> </div> <div class="media stream-item"> <div class="media-body"> <div class="section-subheading article-title mb-0 mt-0"> <a href="https://kalper.net/kp/kp/publication/pub-117-trifix-jpdc-2013/" >Revisiting Cyclic Reduction and Parallel Prefix-Based Algorithms for Tri-diagonal Systems of Equations</a> </div> <a href="https://kalper.net/kp/kp/publication/pub-117-trifix-jpdc-2013/" class="summary-link"> <div class="article-style"> Direct solvers based on prefix computation and cyclic reduction algorithms exploit the special struc&hellip; </div> </a> <div class="stream-meta article-metadata"> <div> <span > <a href="https://kalper.net/kp/kp/author/sudip-seal/">Sudip Seal</a></span>, <span class="author-highlighted"> <a href="https://kalper.net/kp/kp/author/kalyan-perumalla/">Kalyan Perumalla</a></span>, <span > <a href="https://kalper.net/kp/kp/author/steven-hirshman/">Steven Hirshman</a></span> </div> </div> <div class="btn-links"> <a class="btn btn-outline-primary btn-page-header btn-sm" href="https://kalper.net/kp/kp/publication/pub-117-trifix-jpdc-2013/pub-117-trifix-jpdc-2013.pdf" target="_blank" rel="noopener"> PDF </a> <a href="#" class="btn btn-outline-primary btn-page-header btn-sm js-cite-modal" data-filename="/kp/publication/pub-117-trifix-jpdc-2013/cite.bib"> Cite </a> </div> </div> <div class="ml-3"> <a href="https://kalper.net/kp/kp/publication/pub-117-trifix-jpdc-2013/" > <img src="https://kalper.net/kp/kp/publication/pub-117-trifix-jpdc-2013/featured_hua534c79157de8e6d0157303e9ccf686f_17352_150x0_resize_q75_lanczos.jpg" alt="Revisiting Cyclic Reduction and Parallel Prefix-Based Algorithms for Tri-diagonal Systems of Equations" loading="lazy"> </a> </div> </div> <div class="media stream-item"> <div class="media-body"> <div class="section-subheading article-title mb-0 mt-0"> <a href="https://kalper.net/kp/kp/publication/pub-116-siesta-ccpe-2012/" >Scaling the SIESTA Magnetohydrodynamics Equilibrium Code</a> </div> <a href="https://kalper.net/kp/kp/publication/pub-116-siesta-ccpe-2012/" class="summary-link"> <div class="article-style"> We report the results of a scaling effort that increases both the speed and resolution of the SIESTA&hellip; </div> </a> <div class="stream-meta article-metadata"> <div> <span > <a href="https://kalper.net/kp/kp/author/sudip-seal/">Sudip Seal</a></span>, <span class="author-highlighted"> <a href="https://kalper.net/kp/kp/author/kalyan-perumalla/">Kalyan Perumalla</a></span>, <span > <a href="https://kalper.net/kp/kp/author/steven-hirshman/">Steven Hirshman</a></span> </div> </div> <div class="btn-links"> <a class="btn btn-outline-primary btn-page-header btn-sm" href="https://kalper.net/kp/kp/publication/pub-116-siesta-ccpe-2012/pub-116-siesta-ccpe-2012.pdf" target="_blank" rel="noopener"> PDF </a> <a href="#" class="btn btn-outline-primary btn-page-header btn-sm js-cite-modal" data-filename="/kp/publication/pub-116-siesta-ccpe-2012/cite.bib"> Cite </a> </div> </div> <div class="ml-3"> <a href="https://kalper.net/kp/kp/publication/pub-116-siesta-ccpe-2012/" > <img src="https://kalper.net/kp/kp/publication/pub-116-siesta-ccpe-2012/featured_hu4a1719fe38ac5c6a51dd13d2c35d0b26_47719_150x0_resize_q75_lanczos.jpg" alt="Scaling the SIESTA Magnetohydrodynamics Equilibrium Code" loading="lazy"> </a> </div> </div> <div class="media stream-item"> <div class="media-body"> <div class="section-subheading article-title mb-0 mt-0"> <a href="https://kalper.net/kp/kp/publication/pub-141/" >Improved Parallelization of the SIESTA Magneto-hydrodynamic Equilibrium Code Using Cyclic Reduction</a> </div> <a href="https://kalper.net/kp/kp/publication/pub-141/" class="summary-link"> <div class="article-style"> SIESTA is a parallel three-dimensional plasma equilibrium code capable of resolving magnetic islands&hellip; </div> </a> <div class="stream-meta article-metadata"> <div> <span > <a href="https://kalper.net/kp/kp/author/sudip-seal/">Sudip Seal</a></span>, <span > <a href="https://kalper.net/kp/kp/author/steven-hirshman/">Steven Hirshman</a></span>, <span class="author-highlighted"> <a href="https://kalper.net/kp/kp/author/kalyan-perumalla/">Kalyan Perumalla</a></span> </div> </div> <div class="btn-links"> <a href="#" class="btn btn-outline-primary btn-page-header btn-sm js-cite-modal" data-filename="/kp/publication/pub-141/cite.bib"> Cite </a> </div> </div> <div class="ml-3"> <a href="https://kalper.net/kp/kp/publication/pub-141/" > <img src="https://kalper.net/kp/kp/publication/pub-141/featured_hu4b5258c99fa0d9742c5da28ce451e9c1_37504_150x0_resize_q75_lanczos.jpg" alt="Improved Parallelization of the SIESTA Magneto-hydrodynamic Equilibrium Code Using Cyclic Reduction" loading="lazy"> </a> </div> </div> <div class="media stream-item"> <div class="media-body"> <div class="section-subheading article-title mb-0 mt-0"> <a href="https://kalper.net/kp/kp/publication/pub-120-blocktrigpu-jpdc-2013/" >Efficient Heterogeneous Execution on Large Multicore and Accelerator Platforms: Case Study Using a Block Tridiagonal Solver</a> </div> <a href="https://kalper.net/kp/kp/publication/pub-120-blocktrigpu-jpdc-2013/" class="summary-link"> <div class="article-style"> The algorithmic and implementation principles are explored in gainfully exploiting GPU accelerators in conjunction with multicore processors on high-end systems&hellip; </div> </a> <div class="stream-meta article-metadata"> <div> <span > <a href="https://kalper.net/kp/kp/author/alfred-park/">Alfred Park</a></span>, <span class="author-highlighted"> <a href="https://kalper.net/kp/kp/author/kalyan-perumalla/">Kalyan Perumalla</a></span> </div> </div> <div class="btn-links"> <a class="btn btn-outline-primary btn-page-header btn-sm" href="https://kalper.net/kp/kp/publication/pub-120-blocktrigpu-jpdc-2013/pub-120-blocktrigpu-jpdc-2013.pdf" target="_blank" rel="noopener"> PDF </a> <a href="#" class="btn btn-outline-primary btn-page-header btn-sm js-cite-modal" data-filename="/kp/publication/pub-120-blocktrigpu-jpdc-2013/cite.bib"> Cite </a> </div> </div> <div class="ml-3"> <a href="https://kalper.net/kp/kp/publication/pub-120-blocktrigpu-jpdc-2013/" > <img src="https://kalper.net/kp/kp/publication/pub-120-blocktrigpu-jpdc-2013/featured_hu62d2e4a6f71653e65b6715b11b8f1ce8_52340_150x0_resize_q75_lanczos.jpg" alt="Efficient Heterogeneous Execution on Large Multicore and Accelerator Platforms: Case Study Using a Block Tridiagonal Solver" loading="lazy"> </a> </div> </div> </p>