AMG Setup Phase : 1
نویسندگان
چکیده
منابع مشابه
Parallel algebraic multigrid based on subdomain blocking
The algebraic multigrid AMG approach provides a purely algebraic means to tackle the e cient solution of systems of equations posed on large unstructured grids in D and D While sequential AMG has been used for increasingly large problems with several million unknowns its application to even larger applications requires a parallel version Since in contrast to geometric multigrid the hierarchy of...
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We propose new algorithms for the setup phase of algebraic multigrid (AMG) solvers for linear systems coming from edge element discretization. The construction of coarse levels is performed by solving an optimization problem with a Lagrange multiplier method: we minimize the energy of coarse bases under a constraint linking coarse nodal and edge element bases. On structured meshes, the resultin...
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BACKGROUND Most current treatments for chronic immune thrombocytopenic purpura (ITP) act by decreasing platelet destruction. In a phase 1-2 study, we administered a thrombopoiesis-stimulating protein, AMG 531, to patients with ITP. METHODS In phase 1, 24 patients who had received at least one treatment for ITP were assigned to escalating-dose cohorts of 4 patients each and given two identical...
متن کاملModifying CLJP to select grid hierarchies with lower operator complexities and better performance
Algebraic multigrid (AMG) is an efficient algorithm for solving certain types of large, sparse linear systems. For solving very large problems with AMG it becomes necessary to use parallel algorithms. Coarse grid selection algorithms such as CLJP were created to parallelize the setup phase of AMG. For some problems, such as those discretized on structured meshes, CLJP tends to select coarse gri...
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PURPOSE To evaluate the safety, pharmacokinetics, and antitumor activity of AMG 386, an investigational selective angiopoietin 1/2-neutralizing peptibody, in combination with FOLFOX-4 (F), carboplatin/paclitaxel (C/P), or docetaxel (D), in adult patients with advanced solid tumors. EXPERIMENTAL DESIGN Three cohorts of patients (F, n = 6; C/P, n = 8; D, n = 12) received one full cycle of chemo...
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