A Reduced-Storage Implementation of the Lattice Boltzmann Equation

摘要

Simulation programs using the Lattice Boltzmann Equation are limited in the range of problems they can address by memory requirements. We describe an implementation scheme that reduces memory usage by up to 78%. The performance of both the simple and the memory-reduced implementation are compared. Since memory access is the determinant step in the speed of execution of memory intensive applications, we look at the cache memory utilization in both the storage reduced version and in the simple reference implementation. From this we conclude that the proposed method does not degrade the performance relative to a simple implementation.