Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Recent Advances in VisIt: AMR Streamlines and Query-Driven Visualization

Conference ·
OSTI ID:983039
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Adaptive Mesh Refinement (AMR) is a highly effective method for simulations spanning a large range of spatiotemporal scales such as those encountered in astrophysical simulations. Combining research in novel AMR visualization algorithms and basic infrastructure work, the Department of Energy's (DOEs) Science Discovery through Advanced Computing (SciDAC) Visualization and Analytics Center for Enabling Technologies (VACET) has extended VisIt, an open source visualization tool that can handle AMR data without converting it to alternate representations. This paper focuses on two recent advances in the development of VisIt. First, we have developed streamline computation methods that properly handle multi-domain data sets and utilize effectively multiple processors on parallel machines. Furthermore, we are working on streamline calculation methods that consider an AMR hierarchy and detect transitions from a lower resolution patch into a finer patch and improve interpolation at level boundaries. Second, we focus on visualization of large-scale particle data sets. By integrating the DOE Scientific Data Management (SDM) Center's FastBit indexing technology into VisIt, we are able to reduce particle counts effectively by thresholding and by loading only those particles from disk that satisfy the thresholding criteria. Furthermore, using FastBit it becomes possible to compute parallel coordinate views efficiently, thus facilitating interactive data exploration of massive particle data sets.
Research Organization:
Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
Sponsoring Organization:
Computational Research Division
DOE Contract Number:
AC02-05CH11231
OSTI ID:
983039
Report Number(s):
LBNL-3185E
Country of Publication:
United States
Language:
English

Similar Records

Visualization Tools for Adaptive Mesh Refinement Data
Conference · Wed May 09 00:00:00 EDT 2007 · OSTI ID:925532
Production-quality Tools for Adaptive Mesh RefinementVisualization
Technical Report · Thu Oct 25 00:00:00 EDT 2007 · OSTI ID:932586
Visualization of Scalar Adaptive Mesh Refinement Data
Conference · Wed Dec 05 23:00:00 EST 2007 · OSTI ID:928007

Related Subjects

97 MATHEMATICS AND COMPUTING
ALGORITHMS
CALCULATION METHODS
EXPLORATION
INTERPOLATION
MANAGEMENT
PLASMA
RESOLUTION
SIMULATION