G. Mahinthakumar

Learn More
The hybrid MPI-OpenMP model is a natural parallel programming paradigm for emerging parallel architectures that are based on symmetric multiprocessor (SMP) clusters. This paper presents a hybrid implementation adapted for an implicit finite-element code developed for groundwater transport simulations. The original code was parallel-ized for distributed(More)
This study investigates the use of ozone for soil remediation. Batch experiments, in which ozone-containing gas was continuously recycled through a soil bed, were conducted to quantify the rate of ozone self-decomposition and the rates of ozone interaction with soil organic and inorganic matter. Column experiments were conducted to measure ozone(More)
We describe the implementation and analyze the performance of a parallel finite–element multicomponent groundwater transport code on a variety of parallel architectures. The code exhibits characteristics that are typical to many simulation codes such as explicit communication, global reduction operations, sparse matrix operations, and parallel I/O. The(More)
We present a workflow-based algorithm for identifying threads to an urban water management system. Through Grid computing we provide the necessary high-performance computing resources to deliver quickly solutions to the problem. We prototyped a new middleware called cyberaide, that enables easy access to Grid resources through portals or the command line. A(More)
In this paper we present parallel solvers for large linear systems arising from the finite–element discretization of three–dimensional groundwater flow problems. We have tested our parallel implementations on the Intel Paragon XP/S 150 supercomputer using up to 1024 parallel processors. Our solvers are based on multigrid and Krylov subspace methods. Our(More)
In this paper we present parallel solvers for large linear systems arising from the finite–element discretization of three–dimensional groundwater flow problems. We have tested our parallel implementations on the Intel Paragon XP/S 150 supercomputer using up to 1024 parallel processors. Our solvers are based on multigrid and Krylov subspace methods. Our(More)
  • 1