The implementation of an out-of-core version of a full CI algorithm on the Cray T3D is described. The introduction of heavy I/O activity, necessary to handle larger problems, required particular attention in order to maintain good performance. As an application, the FCI energy of the Be 2 molecule w
A full CI algorithm on the CRAY T3D. Application to the NH3 molecule
β Scribed by Stefano Evangelisti; Gian Luigi Bendazzoli; Roberto Ansaloni; Elda Rossi
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 619 KB
- Volume
- 233
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
A full configuration interaction algorithm on the CRAY T3D massively parallel computer has been implemented. The algorithm shows good scaling behaviour as a function of the number of processors. As an application, we studied a problem that has attracted the attention of several authors in the past, i.e. the determination of the ground state energy of ammonia with a valence double-zeta plus polarization (vdzp) basis set.
π SIMILAR VOLUMES
## Abstract The increase of the time step size significantly deteriorates the property of the coefficient matrix generated from the CrankβNicolson finiteβdifference timeβdomain (CNβFDTD) method. As a result, the convergence of classical iterative methods, such as generalized minimal residual method