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- Rukhsana Shahnaz, Anila Usman, Imran R. Chughtai
- 2006 IEEE International Conference on Cluster…
- 2006

The sparse matrix vector product (SMVP) is the kernel operation in many scientific applications. This kernel is an irregular problem, which has led to the development of several compressed storage formats. This paper discusses scalable implementations of sparse matrix-vector products, which are crucial for high performance solutions of large-scale linear… (More)

- Mikel Luján, Anila Usman, Patrick Hardie, T. L. Freeman, John R. Gurd
- International Conference on Computational Science
- 2005

- Rukhsana Shahnaz, Anila Usman
- Int. Arab J. Inf. Technol.
- 2011

The present paper discusses the implementations of sparse matrix-vector products, which are crucial for high performance solutions of large-scale linear equations, on a PC-Cluster. Three storage formats for sparse matrices compressed row storage, block compressed row storage and sparse block compressed row storage are evaluated. Although using BCRS format… (More)

- Anila Usman, Mikel Luján, Len Freeman, John R. Gurd
- HPCC
- 2006

The matrix-vector product is one of the most important computational components of Krylov methods. This kernel is an irregular problem, which has led to the development of several compressed storage formats. We design a data structure for distributed matrix to compute the matrix-vector product efficiently on distributed memory parallel computers using MPI.… (More)

- Anila Usman, George Hall
- 1996

A theory is developed that explains the stepsize patterns observed when standard predictor-corrector methods with variable stepsize strategy are used to solve stii or mildly stii problems. In some cases an algorithmic steady state occurs with smooth almost constant stepsizes; at other times an oscillating stepsize pattern of stepsizes is observed with the… (More)

- Muhammad Taimoor Khan, Anila Usman
- ArXiv
- 2009

T Te ec ch hn ni iq qu ue e d de et te ec ct ti io on n s so of ft tw wa ar re e f fo or r S Sp pa ar rs se e M Ma at tr ri ic ce es s M Mu uh ha am mm ma ad d T ABSTRACT. Sparse storage formats are techniques for storing and processing the sparse matrix data efficiently. The performance of these storage formats depend upon the distribution of non-zeros,… (More)

- Zubaria Noreen, Irfan Hameed, Anila Usman
- FIT
- 2009

A database is considered as a core asset of an organization. Information about customers, employees and employers of the organization is stored in the database. Allowing authorized access to information and it's shielding against unauthorized access is always given prime importance and is of great concern to the stakeholders of the organization. The work… (More)

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