P06: Large Scale FFT-Based Stress-Strain Simulations with
Irregular Domain Decomposition
SessionPoster Reception
Event Type
ACM Student Research Competition
Poster
Reception
TimeTuesday, November 14th5:15pm -
7pm
LocationFour Seasons Ballroom
DescriptionLarge-scale stress-strain simulations involving
parallel Fast Fourier Transforms (FFTs) suffer from high
memory requirements and high communication overhead. We
propose an irregular domain decomposition method to
reduce the memory requirement of an FFT-based
stress-strain simulation algorithm for composite
materials, the Moulinec-Suquet Composite (MSC) - Basic
Scheme. This algorithm uses Green’s functions to solve a
partial differential equation. FFTs are used for
convolution of large 3-D tensor fields with the Green’s
function.
In this preliminary work, we propose a modified algorithm, the MSC-Alternate Scheme, to show that processing the composite with smaller, local FFTs on irregular domains (grains in the material’s microstructure) can reduce memory usage without adversely impacting accuracy of the result. Additionally, data models can reduce communication by compressing the data in the domains before the communication step. Our poster presents our proof-of-concept results and charts out the path towards a GPU implementation.
In this preliminary work, we propose a modified algorithm, the MSC-Alternate Scheme, to show that processing the composite with smaller, local FFTs on irregular domains (grains in the material’s microstructure) can reduce memory usage without adversely impacting accuracy of the result. Additionally, data models can reduce communication by compressing the data in the domains before the communication step. Our poster presents our proof-of-concept results and charts out the path towards a GPU implementation.
