SC is the International Conference for
 High Performnance Computing, Networking, Storage and Analysis

SCHEDULE: NOV 13-19, 2010

Evaluation of Two Parallel Finite Element Implementations of the Time-Dependent Advection Diffusion Problem: CUDA versus MPI

SESSION: Research Poster Reception

EVENT TYPE: Poster

TIME: 5:15PM - 7:00PM

AUTHOR(S):Lucas Veronese, Leonardo Lima, Alberto De Souza, Lucia Catabriga

ROOM:Main Lobby

ABSTRACT:
We examine two parallel finite element implementations of the 2D time-dependent advection diffusion problem, one for multi-core clusters and one for CUDA enabled GPUs, and compare their performances. We used the SUPG stabilized finite element formulation to solve the corresponding 2D time-dependent advection diffusion equation. To address the resulting system of ordinary differential equations towards steady-state, we employed the implicit predictor/multicorrector scheme. The sparse linear system of each time-step (stored in a Compressed Storage Row - CSR - scheme in both implementations) was solved by the GMRES method. In our multi-core cluster implementation we used the MPI library for inter-core communication. Both implementations were written in C -- the CUDA version was derived from the multi-core version. Our experimental results showed that a desktop machine with a few CUDA enabled GPUs can achieve higher performance than a 24-machine (96 cores) cluster in this class of finite element problems.

Chair/Author Details:

Lucas Veronese - Universidade Federal do Espírito Santo

Leonardo Lima - Universidade Federal do Espírito Santo

Alberto De Souza - Universidade Federal do Espírito Santo

Lucia Catabriga - Universidade Federal do Espírito Santo

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