GTC 2012 Program Guide - GPU Technology Conference

TUESDAY
from measurements. The simulations involving multiplications
and inversions of large matrices provide an ideal showcase for
performance gain by employing GPGPUs in the execution of the
algebraic routines on these matrices in computing environments
with shared execution of algorithms on multiple nodes with
multiple GPGPUs and CPU cores.
Speaker(s): Jan Jacob (Postdoctoral Researcher, University of Hamburg)
Topic(s): General Interest, Computational Physics, Application Design
& Porting Techniques (Intermediate)
TUESDAY, MAY 15, 14:30 (50 MINUTES)
ROOM K
S0516 The Advantage of GPU Computation for Analyzing
Complex Traits
Most import agriculture traits and human diseases are complex
traits which are controlled by gene network with gene by gene
interaction (epistasis) and gene by environment interaction (GE).
New statistic methods and software are developed for analyzing
genetic architecture for complex traits based on genome-wide
association study (GWAS). When deal with large mapping
population and huge amount of molecular information, GPU
computation has an advantage over CPU computation. We will
demonstrate the newly developed GPU based software
QTLNetwork V3.0 and GWAS-GMDR for mapping genes with
epistasis and GE interaction for complex traits of human, crops,
and mouse.
Speaker(s): Jun Zhu (Professor, Zhejiang University)
Topic(s): Bioinformatics, Life Sciences (Intermediate)
TUESDAY, MAY 15, 14:30 (25 MINUTES)
ROOM B
S0610 Octree-Based Sparse Voxelization For Real-Time
Global Illumination
Discrete voxel representations are generating growing interest in
a wide range of applications in computational sciences and
particularly in computer graphics. A new real-time usage of
dynamic voxelization inside a sparse voxel octree is to compute
voxel-based global illumination. When used in real-time contexts,
it becomes critical to achieve fast 3D scan conversion (also called
voxelization) of traditional triangle-based surface representations.
This talk describes an new surface voxelization algorithm that
produces a sparse voxel representation of a triangle mesh scene
in the form of an octree structure using the GPU hardware
rasterizer. In order to scale to very large scenes, our approach
avoids relying on an intermediate full regular grid to build the
structure and constructs the octree directly.
Speaker(s): Cyril Crassin (Postdoctoral Research Scientist, NVIDIA)
Topic(s): Computer Graphics (Intermediate)
TUESDAY, MAY 15, 14:30 (25 MINUTES)
ROOM A2
S0655 Direct Numerical Simulation of Turbulence-
Chemistry Interactions: Fundamental Insights Towards
Predictive Models
Recent petascale direct numerical simulation (DNS) of turbulent
combustion have transformed our ability to interrogate finegrained
‘turbulence-chemistry’ interactions in canonical
laboratory configurations. In particular, three-dimensional DNS,
at moderate Reynolds numbers and with complex chemistry, is
providing unprecedented levels of detail to understand
fundamental coupling between turbulence, mixing and reaction.
This information is leading to new physical insight and is providing
unique validation data for assessing model assumptions in
coarse-grained engineering CFD approaches used to design
modern combustors. The role of petascale DNS is illustrated
through selected examples relevant to controlling ignition and
combustion rates in homogeneous charge compression ignition
engines and to fuel injection processes in stationary gas turbines
for power generation. Petascale simulations presently generate
upwards of a petabyte of complex, multi-scale, time-varying data
used by combustion modelers to validate subfilter combustion and
mixing models in large-eddy simulation. With the advent of 10-20
petaflop hybrid architectures with accelerators like Titan at Oak
Ridge National Laboratory, it will be possible to dramatically
increase the chemical complexity of DNS. This will help accelerate
the development of predictive subprocess models which will be
used by engine developers to better understand and tailor the
combustion of gasoline and new, more complex types of fuels in
advanced engines. With Titan, simulations will move beyond
today’s studies of simple fuels—hydrogen, syngas and methane—
to more complex, larger-molecule hydrocarbon fuels like
isooctane (a surrogate for gasoline), commercially important
oxygenated alcohols (for example, ethanol and butanol), and
biofuel surrogates.
Speaker(s): Jacqueline H. Chen (Combustion Research Facility, Sandia
National Laboratories)
Topic(s): Supercomputing (Intermediate)
TUESDAY, MAY 15, 15:00 (50 MINUTES)
ROOM L
S0034 Real-Time Risk Simulation: The GPU Revolution In
Profit Margin Analysis
Discover how ICHEC helped a world leading company in its sector,
to dramatically speed-up and improve the quality of its real-time
risk management tool chain. In this session, we present the
method used for porting the core-part of the simulation engines
to GPUs using CUDA. This porting was realized on two very
different simulation algorithms and resulted in speed-ups of 2 to
3 orders of magnitude, allowing much greater accuracy of the
results in a real-time environment.
Speaker(s): Gilles Civario (Senior Software Architect, ICHEC), Renato
Miceli (Computational Scientist, ICHEC)
Topic(s): Finance, Application Design & Porting Techniques, Algorithms
& Numerical Techniques (Intermediate)
TUESDAY, MAY 15, 15:00 (50 MINUTES)
ROOM C
S0036 Multiparticle Collision Dynamics on GPUs
See how we employ GPUs to simulate the interaction of millions of
solvent and solute particles of a fluid system. Often the domain of
large cluster system, the most time consuming part of our
simulations can now be done on desktop PCs in reasonable time.
This contribution shows how GPUs can effectively be used to
accelerate existing programs and how techniques like streaming
and increased data locality significantly enhance calculation
throughput. It also shows how a GPU-optimized program
structure yields usually expensive additional functionality “almost
free”. Furthermore, a well-scaling single-node/multi-GPU
implementation of the program is presented.
Speaker(s): Elmar Westphal (Software Developer,
Forschungszentrum Juelich)
Topic(s): Computational Physics, Computational Fluid Dynamics,
Molecular Dynamics (Intermediate)