national center for supercomputing applications overview of engineering user support at ncsa seid...
TRANSCRIPT
National Center for Supercomputing Applications
Overview of Engineering User Support at NCSA
Seid Koric Ph.D.Engineering Applications Analyst
http://www.ncsa.uiuc.edu
National Center for Supercomputing Applications
Think Big ! Supercomputing in Engineering ?
“It is amazing what one can do these days on a dual-core laptop computer. Nevertheless, the appetite for more speed and memory, if anything is increasing. There always seems to be some calculations that ones wants to do that exceeds available resources. It makes one think that computers have and will always come in one size and one speed: “Too small and too slow”. This will be the case despite supercomputers becoming the size of football fields !”
Tom Hughes, President of
International Association for Computing Mechanics-IACM
National Center for Supercomputing Applications
Key Objectives • Provide user support and consulting for engineering users
allocated to NCSA Teragrid machines, helping them to use commercial engineering software or in-house codes effectively, and to solve large engineering problems
• Maintain web pages for supported software
• Actively engaged in testing new NCSA and Teragrid computational resources with emphasis on engineering software and applications
• Giving technical presentations about Teragrid computational resources and projects, disseminate emerging engineering related information and technologies
National Center for Supercomputing Applications
Supported Engineering Softwarehttp://www.ncsa.uiuc.edu/UserInfo/Resources/Software/Repository
> 150 .edu, .gov, and .com engineering users, coast to coast •Abaqus (Implicit SMP,MPI; Explicit,MPI)•Ansys with Multiphysics (SMP,MPI)•LS-DYNA (SMP, MPI)•MSC.Nastran (MPI, SMP)•MSC.Marc (MPI)•MSC.Patran•Fluent/Fidap(MPI,SMP)•Gambit•GASP (MPI)•Various in house engineering codes and libraries
National Center for Supercomputing Applications
Some examples of recent engineering project collaborations
• Not a short term daily question-answer type of user support
• PI usually requested a specific NCSA stuff with appropriate background (not only porting/debugging)
• Lasted between one week to one year • Some collaborations involved traveling to/from NCSA
to alleviate communication barriers • Mostly funded from general NSF user support, or
NCSA PSP funds• Usually successful outcome sometimes with a journal
or a conference publication
National Center for Supercomputing Applications
Dynamic Analysis of Centrifuge Shake Table System (9 m. radius, 50 g)
NEES Grid Project: Collaboration with University of California, Davis
(Centrifuge provides increased gravitational acceleration to produce self weight stresses)
Looking for dynamics loads on spindle bearings and bucket structure for bearing life calculations
– Static Step with centrifugal and gravitational loads applied
– Natural Frequency Extraction (200 modes)
– Dynamic Loading Analysis with modal superposition
vertical force comparison
-60000
-50000
-40000
-30000
-20000
-10000
0
10000
20000
30000
40000
50000
60000
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
time, seconds
forc
e, lb
spindle vertical, linktest7 spindle vertical, linktest8 spindle vertical, linktest9
National Center for Supercomputing Applications
DNS Simulation of Turbulent Combustion on Abe
Courtesy of Prof. C. Pantano, MeSci, UIUC
National Center for Supercomputing Applications
Comparison of Implicit (quasi-static) and Explicit (dynamic) coupled thermo-mechanical models of
solidification
National Center for Supercomputing Applications
Evaluation of Linear Solvers in Computational Mechanics
• Global stiffness matrices and rhs extracted from Nastran
• Solve systems using major direct and iterative parallel solvers and evaluate their accuracy, robustness, and efficiencies on different HPC platforms.
National Center for Supercomputing Applications
Cell Phone Drop Test SimulationAbaqus Explicit Solver, General Contact Algorithm, Floor as a Rigid Body
Courtesy of Simulia and Motorola Inc.
0
5000
10000
15000
20000
25000
1 4 8 16 32 64
Number of CPUs or Cores
Wal
l Clo
cl T
ime
[sec
]
Tungsten
Cobalt
Abe
National Center for Supercomputing Applications
Acknowledgements
• Dr. Ahmed Taha, NCSA CFD Support
• Dr Lars Pedersen, U of California Davis
• Prof. Brian G. Thomas and Carlos Rubino Pantano, MeSci, U of ILL
• Simulia Inc. and Motorola Inc.