Zobrazeno 1 - 10
of 215
pro vyhledávání: '"Phillip Colella"'
Autor:
Nikolai V. Pogorelov, Charles N. Arge, Jon Linker, Lisa Upton, Brian Van Straalen, Ronald Caplan, Phillip Colella, Cooper Downs, Christopher Gebhard, Dinesha Vasanta Hegde, Carl Henney, Shaela Jones-Mecholsky, Tae Kim, Miko Stulajter, Talwinder Singh, James Turtle, Mehmet Yalim
To address Objective II of the National Space Weather Strategy and Action Plan 'Develop and Disseminate Accurate and Timely Space Weather Characterization and Forecasts' and US Congress PROSWIFT Act 116–181, our team is developing a new set of open
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::784171b8e4713ef5abf7503a462525cd
https://doi.org/10.5194/egusphere-egu23-8215
https://doi.org/10.5194/egusphere-egu23-8215
Publikováno v:
AIAA SCITECH 2022 Forum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7359468a314c061613a7e4c8e0d47f2
https://doi.org/10.2514/6.2022-2322
https://doi.org/10.2514/6.2022-2322
Publikováno v:
Journal of Computational Physics. 373:877-899
A fourth-order finite-volume Vlasov–Poisson algorithm is developed for simulating axisymmetric plasma configurations in ( r , v r , v θ ) phase space coordinates. The Vlasov equation for cylindrical phase space coordinates is cast into conservatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22f2bbf8be8dcf798b68e6bcaa690540
https://doi.org/10.1016/j.jcp.2018.07.029
https://doi.org/10.1016/j.jcp.2018.07.029
Autor:
Phillip Colella, Boris Lo
Publikováno v:
Commun. Appl. Math. Comput. Sci. 14, no. 1 (2019), 105-119
Author(s): Lo, Boris | Advisor(s): Colella, Phillip | Abstract: A high order multilevel numerical solver for Maxwell's equations using local discrete convolutions is presented. Maxwell's equations are embedded in a system of wave equations. The solut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51e21635869a3922b150b93f66707781
https://projecteuclid.org/euclid.camcos/1564020022
https://projecteuclid.org/euclid.camcos/1564020022
Autor:
Tze Meng Low, P. McCorquodale, Anuva Kulkarni, Doru Thom Popovici, Daniele G. Spampinato, Brian Van Straalen, Phillip Colella, Michael Franusich, Andrew Canning, Franz Franchetti
Publikováno v:
HiPC Workshops
We propose FFTX, a new framework for building high-performance FFT-based applications on exascale machines. Complex node architectures lead to multiple levels of parallelism and demand efficient ways of data communication. The current FFTW interface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff7458f6b95759addb01410724c8c435
https://doi.org/10.1109/hipcw.2018.8634111
https://doi.org/10.1109/hipcw.2018.8634111
Autor:
Phillip Colella
Publikováno v:
Discrete and Continuous Dynamical Systems-Series A, vol 36, iss 8
Colella, P. (2016). High-order finite-volume methods on locally-structured grids. Discrete and Continuous Dynamical Systems-Series A, 36(8), 4247-4270. doi: 10.3934/dcds.2016.36.4247. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/3tz3m1k5
Colella, P. (2016). High-order finite-volume methods on locally-structured grids. Discrete and Continuous Dynamical Systems-Series A, 36(8), 4247-4270. doi: 10.3934/dcds.2016.36.4247. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/3tz3m1k5
We present an approach to designing arbitrarily high-order finite-volume spatial discretizations on locally-rectangular grids. It is based on the use of a simple class of high-order quadratures for computing the average of fluxes over faces. This app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d51be0a58f8e82700c3a3a626b1b2f87
https://doi.org/10.3934/dcds.2016.36.4247
https://doi.org/10.3934/dcds.2016.36.4247
Autor:
Phillip Colella, Debojyoti Ghosh, M. Dorr, Jeffrey A. F. Hittinger, Mikhail Dorf, Peter Schwartz
Publikováno v:
Dorr, MR; Colella, P; Dorf, MA; Ghosh, D; Hittinger, JAF; & Schwartz, PO. (2018). High-order discretization of a gyrokinetic Vlasov model in edge plasma geometry. Journal of Computational Physics, 373, 605-630. doi: 10.1016/j.jcp.2018.07.008. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/9ph360bz
We present a high-order spatial discretization of a continuum gyrokinetic Vlasov model in axisymmetric tokamak edge plasma geometries. Such models describe the phase space advection of plasma species distribution functions in the absence of collision
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bdd8b5fad788f7d604931cff7c16020
http://arxiv.org/abs/1712.01978
http://arxiv.org/abs/1712.01978
Publikováno v:
Basu, P; Williams, S; Van Straalen, B; Oliker, L; Colella, P; & Hall, M. (2017). Compiler-based code generation and autotuning for geometric multigrid on GPU-accelerated supercomputers. Parallel Computing, 64, 50-64. doi: 10.1016/j.parco.2017.04.002. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/2q62w6jg
Generate parallel CUDA code from sequential C input code using a compiler-based tool for key operators in Geometric Multigrid.Demonstrate that generated code matched or improves performance of expert written CUDA code.Compare performance of generated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::810f517e46d41f40eaea8ea9802340be
https://escholarship.org/uc/item/2q62w6jg
https://escholarship.org/uc/item/2q62w6jg
Autor:
Chris Kavouklis, Phillip Colella
Publikováno v:
Commun. Appl. Math. Comput. Sci. 14, no. 1 (2019), 1-32
We present a new version of the Method of Local Corrections (MLC) \cite{mlc}, a multilevel, low communications, non-iterative, domain decomposition algorithm for the numerical solution of the free space Poisson's equation in 3D on locally-structured
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae06f838e420ad96515ea0a5bea9704b
http://arxiv.org/abs/1702.08111
http://arxiv.org/abs/1702.08111
Autor:
Phillip Colella, Christopher Chaplin
Publikováno v:
Communications in Applied Mathematics and Computational Science, vol 12, iss 1
Chaplin, C; & Colella, P. (2017). A single-stage flux-corrected transport algorithm for high-order finite-volume methods. Communications in Applied Mathematics and Computational Science, 12(1), 1-24. doi: 10.2140/camcos.2017.12.1. Lawrence Berkeley National Laboratory: Lawrence Berkeley National Laboratory. Retrieved from: http://www.escholarship.org/uc/item/5hx8m952
Commun. Appl. Math. Comput. Sci. 12, no. 1 (2017), 1-24
Chaplin, C; & Colella, P. (2017). A single-stage flux-corrected transport algorithm for high-order finite-volume methods. Communications in Applied Mathematics and Computational Science, 12(1), 1-24. doi: 10.2140/camcos.2017.12.1. Lawrence Berkeley National Laboratory: Lawrence Berkeley National Laboratory. Retrieved from: http://www.escholarship.org/uc/item/5hx8m952
Commun. Appl. Math. Comput. Sci. 12, no. 1 (2017), 1-24
We present a new limiter method for solving the advection equation using a high-order, finite-volume discretization. The limiter is based on the flux-corrected transport algorithm. We modify the classical algorithm by introducing a new computation fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1151a934f9e4313715dd5b363cab0b51
https://escholarship.org/uc/item/5hx8m952
https://escholarship.org/uc/item/5hx8m952