October 2011 - Allocations-admins - mailman3.cels.anl.gov

Re: [allocations-admins] [LCRC Accounts] Project Request: CFD-Navistar
by Bair, Raymond A. 27 Oct '11

27 Oct '11

Ok by me. :-) Ray Bair Chief Computational Scientist, CELS Computing, Environment, and Life Sciences Argonne National Laboratory, and The University of Chicago Sent from my iPad On Oct 27, 2011, at 10:07 AM, "accounts(a)lcrc.anl.gov" <accounts(a)lcrc.anl.gov> wrote: > Hello, > > A new project on the LCRC cluster has been requested. Please forward > the information on to the LCRC Allocation sub-committee. > > Applicant's name: Ray Bair > Applicant's institution: ANL > Applicant's division: CLS > Project Name: CFD-Navistar > Project title: Truck Aerodynamics > Associated funding: TBD > Other Systems: Small Navistar cluster > Science: The performance and efficiency of large vehicles is highly impacted by aerodynamics; however aerodynamics simulations to date have been coarse and data is sparse. In this Navistar-Argonne project we will explore more rigorous CFD approaches to truck aerodynamics. > Project description: This is a multiple phase project. In the first phase, we will explore the opportunity for Navistar and Argonne to collaborate on truck aerodynamics studies. For Navistar's sample problem we will evaluate data transport, problem setup, simulations using Navistar-provided software licenses, post-processing, and visualization. > Project URL: > Requested allocation: 30000 > Q1: 10000 > Q2: 20000 > Q3: 0 > Q4: 0 > Justification: > > > The requester has used undetermined amount hours of their initial startup project. > > In addition to approving an initial amount, please specify a Category > and Subcategory for this project. For a list of the current selection > of approved categories, please see: > > https://wiki.lcrc.anl.gov/wiki/Processes/Categories > > Once the Allocation committee has approved the project, please go to > the Project Management page to create it: > > https://accounts.lcrc.anl.gov/projects.php > > Thank You, > The LCRC Accounts System > _______________________________________________ > allocations-admins mailing list > allocations-admins(a)lists.lcrc.anl.gov > https://lists.lcrc.anl.gov/mailman/listinfo/allocations-admins

1 0

[LCRC Accounts] Project Request: CFD-Navistar
by accounts＠lcrc.anl.gov 27 Oct '11

27 Oct '11

Hello, A new project on the LCRC cluster has been requested. Please forward the information on to the LCRC Allocation sub-committee. Applicant's name: Ray Bair Applicant's institution: ANL Applicant's division: CLS Project Name: CFD-Navistar Project title: Truck Aerodynamics Associated funding: TBD Other Systems: Small Navistar cluster Science: The performance and efficiency of large vehicles is highly impacted by aerodynamics; however aerodynamics simulations to date have been coarse and data is sparse. In this Navistar-Argonne project we will explore more rigorous CFD approaches to truck aerodynamics. Project description: This is a multiple phase project. In the first phase, we will explore the opportunity for Navistar and Argonne to collaborate on truck aerodynamics studies. For Navistar's sample problem we will evaluate data transport, problem setup, simulations using Navistar-provided software licenses, post-processing, and visualization. Project URL: Requested allocation: 30000 Q1: 10000 Q2: 20000 Q3: 0 Q4: 0 Justification: The requester has used undetermined amount hours of their initial startup project. In addition to approving an initial amount, please specify a Category and Subcategory for this project. For a list of the current selection of approved categories, please see: https://wiki.lcrc.anl.gov/wiki/Processes/Categories Once the Allocation committee has approved the project, please go to the Project Management page to create it: https://accounts.lcrc.anl.gov/projects.php Thank You, The LCRC Accounts System

1 0

Re: [allocations-admins] [LCRC Accounts] Yearly Allocation Request from DVI_Materials
by John Valdes 08 Oct '11

08 Oct '11

At the CSAC meeting, Misun said that Barry didn't realize he needed to submit a new request (since this was a new project in Aug), but that he wanted to continue it in FY12 with 50K for the year. So that the CSAC reports are complete, I submitted this request on his behalf and granted the 50K. Since the project was created after 7/1/11, we weren't requiring that he submit a progress report. John On Sat, Oct 08, 2011 at 02:14:59PM -0500, accounts(a)lcrc.anl.gov wrote: > Hello, > > A yearly allocation for the LCRC cluster has been requested with the > following updated information: > > Submitter/PI: Barry Smith > Project Name: DVI_Materials > Division: MCS > Project title: DVI Solvers for Material Science > Associated funding: DOE ASCR ARPA-E, FASTMath SciDAC > Other Systems: > Science: This project uses differential variational inequalities (DVIs) for heterogeneous materials problems, which describe the mesoscale behavior of irradiate damaged materials, for example in a nuclear reactor. The phase field approach is used for modeling microstructure in the mesoscale. Since the diffuse boundary between phases must be localized, one needs to use double obstacle potentials for generating the free energy functional. This results in a differential variational inequality. Our aim is to develop algorithms and software for large-scale DVIs in collaboration with material scientists. > Project description: IWe employ coupled Cahn-Hilliard and Allen-Cahn systems with a double obstacle free energy potential to simulate the physics. The model is discretized in time with mixed implicit-explicit integration and in space by finite elements. However, a naive finite element approximation does not guarantee that the discrete solution satifises appropriate constraints. Therefore, we formulate a DVI, which is equivalent to a complementarity problem and provides bounds on the constrained variables This approach in turn allows us to use parallel solvers for complementarity problems in PETSc. > > We have validated the DVI approach agains the baseline results of the Center for Materials Science of Nuclear Fuel^M(CMSNF). We employed much larger time steps than the conventional finite difference and finite element methods, which is one of the projected benets of the DVI formulation.We have completed preliminary numerical experiments and mathematical analysis for both the Allen-Cahn and Cahn-Hilliard systems that demonstrate mesh-independent convergence rates for this preconditioner. That is, the work required to solve a single timestep grows linearly with the number of unknowns. > > For now we are making 2 dimensional runs and hope to use at least a 1000 by 1000 grids, with 5 degrees of freedom per grid point and hence at least 5 million unknowns. At each time step one must solve a sequence of linear problems of varying sizes with around 5 million degrees of freedom. We are using the geometric multigrid in PETSc for the linear solves. On a workstation for 100 by 100 grids it takes about 30 seconds per grid point. We plan to use the Intel compilers and MPI, later we may use hybrid programming within a node but for initial work it is all MPI. > > Project members: Barry Smith, Lois McInnes, Satish Balay, Mihai Amotesci, Todd Munson, Jungho Lee, Lei Wang. > > Project URL: > Current FY Hours Used: undetermined amount > > New FY Requested allocation: 50000 > Q1: 12500 > Q2: 12500 > Q3: 12500 > Q4: 12500 > > Justification: > > Thank You, > > The LCRC Accounts System > _______________________________________________ > allocations-admins mailing list > allocations-admins(a)lists.lcrc.anl.gov > https://lists.lcrc.anl.gov/mailman/listinfo/allocations-admins

1 0

Re: [allocations-admins] [LCRC Accounts] Yearly Allocation Request from Parallel_Fusion_PDEs
by John Valdes 08 Oct '11

08 Oct '11

FYI, Lois said she was busy with other proposals and missed the LCRC renewal deadlines for her project, Parallel_Fusion_PDEs. She's now submitted a report and a renewal request, however. She's only asking for 80K for the year, so I've granted this amount (20K quarterly) as we did for the other <= 100K projects. John On Sat, Oct 08, 2011 at 05:39:05AM -0500, accounts(a)lcrc.anl.gov wrote: > Hello, > > A yearly allocation for the LCRC cluster has been requested with the > following updated information: > > Submitter/PI: Lois Curfman McInnes > Project Name: Parallel_Fusion_PDEs > Division: MCS > Project title: Parallel Implicit Algorithms in Edge Fusion Simulations > Associated funding: DOE SciDAC program via the FACETS project (FACETS = Framework Application for Core-Edge Transport Simulations) > Other Systems: MCS workstations > Science: We are developing scalable algorithms for the solution of nonlinear partial differential equations that arise in the multi-institutional SciDAC FACETS (Framework Application for Core-Edge Transport Simulations) project (PI John Cary, Tech-X Corporation). This project's aim is the construction of a multiphysics, parallel framework application, FACETS, that will enable whole-device modeling for the U.S. fusion program and ITER, the next-step fusion confinement device. FACETS will be highly flexible, through use of component technology and object oriented design, to facilitate switching among models. This will enable use of simplified models for rapid turnaround or high-fidelity models to take advantage of the largest supercomputer hardware. > Project description: A critical aspect of FACETS fusion codes is the solution of time-dependent, nonlinear partial differential equations (PDEs). Solution of the nonlinear and linear algebraic systems arising from spatial and temporal discretization of these PDEs is a significant fraction of overall execution time. A primary focus of recent work with FACETS has been the introduction of robust and scalable parallel nonlinear solvers from the PETSc library into the parallel UEDGE edge transport simulation, with emphasis on scalable physics-based preconditioners. We are also exploring scalable solver issues for boundary turbulence modeling via BOUT++ and investigating issues in coupled multiphysics problems. > Project URL: http://www.facetsproject.org > Current FY Hours Used: undetermined amount > > New FY Requested allocation: 80000 > Q1: 20000 > Q2: 20000 > Q3: 20000 > Q4: 20000 > > Justification: > > Thank You, > > The LCRC Accounts System > _______________________________________________ > allocations-admins mailing list > allocations-admins(a)lists.lcrc.anl.gov > https://lists.lcrc.anl.gov/mailman/listinfo/allocations-admins

1 0

[LCRC Accounts] Yearly Allocation Request from DVI_Materials
by accounts＠lcrc.anl.gov 08 Oct '11

08 Oct '11

Hello, A yearly allocation for the LCRC cluster has been requested with the following updated information: Submitter/PI: Barry Smith Project Name: DVI_Materials Division: MCS Project title: DVI Solvers for Material Science Associated funding: DOE ASCR ARPA-E, FASTMath SciDAC Other Systems: Science: This project uses differential variational inequalities (DVIs) for heterogeneous materials problems, which describe the mesoscale behavior of irradiate damaged materials, for example in a nuclear reactor. The phase field approach is used for modeling microstructure in the mesoscale. Since the diffuse boundary between phases must be localized, one needs to use double obstacle potentials for generating the free energy functional. This results in a differential variational inequality. Our aim is to develop algorithms and software for large-scale DVIs in collaboration with material scientists. Project description: IWe employ coupled Cahn-Hilliard and Allen-Cahn systems with a double obstacle free energy potential to simulate the physics. The model is discretized in time with mixed implicit-explicit integration and in space by finite elements. However, a naive finite element approximation does not guarantee that the discrete solution satifises appropriate constraints. Therefore, we formulate a DVI, which is equivalent to a complementarity problem and provides bounds on the constrained variables This approach in turn allows us to use parallel solvers for complementarity problems in PETSc. We have validated the DVI approach agains the baseline results of the Center for Materials Science of Nuclear Fuel^M(CMSNF). We employed much larger time steps than the conventional finite difference and finite element methods, which is one of the projected benets of the DVI formulation.We have completed preliminary numerical experiments and mathematical analysis for both the Allen-Cahn and Cahn-Hilliard systems that demonstrate mesh-independent convergence rates for this preconditioner. That is, the work required to solve a single timestep grows linearly with the number of unknowns. For now we are making 2 dimensional runs and hope to use at least a 1000 by 1000 grids, with 5 degrees of freedom per grid point and hence at least 5 million unknowns. At each time step one must solve a sequence of linear problems of varying sizes with around 5 million degrees of freedom. We are using the geometric multigrid in PETSc for the linear solves. On a workstation for 100 by 100 grids it takes about 30 seconds per grid point. We plan to use the Intel compilers and MPI, later we may use hybrid programming within a node but for initial work it is all MPI. Project members: Barry Smith, Lois McInnes, Satish Balay, Mihai Amotesci, Todd Munson, Jungho Lee, Lei Wang. Project URL: Current FY Hours Used: undetermined amount New FY Requested allocation: 50000 Q1: 12500 Q2: 12500 Q3: 12500 Q4: 12500 Justification: Thank You, The LCRC Accounts System

1 0

[LCRC Accounts] Yearly Allocation Request from Parallel_Fusion_PDEs
by accounts＠lcrc.anl.gov 08 Oct '11

08 Oct '11

Hello, A yearly allocation for the LCRC cluster has been requested with the following updated information: Submitter/PI: Lois Curfman McInnes Project Name: Parallel_Fusion_PDEs Division: MCS Project title: Parallel Implicit Algorithms in Edge Fusion Simulations Associated funding: DOE SciDAC program via the FACETS project (FACETS = Framework Application for Core-Edge Transport Simulations) Other Systems: MCS workstations Science: We are developing scalable algorithms for the solution of nonlinear partial differential equations that arise in the multi-institutional SciDAC FACETS (Framework Application for Core-Edge Transport Simulations) project (PI John Cary, Tech-X Corporation). This project's aim is the construction of a multiphysics, parallel framework application, FACETS, that will enable whole-device modeling for the U.S. fusion program and ITER, the next-step fusion confinement device. FACETS will be highly flexible, through use of component technology and object oriented design, to facilitate switching among models. This will enable use of simplified models for rapid turnaround or high-fidelity models to take advantage of the largest supercomputer hardware. Project description: A critical aspect of FACETS fusion codes is the solution of time-dependent, nonlinear partial differential equations (PDEs). Solution of the nonlinear and linear algebraic systems arising from spatial and temporal discretization of these PDEs is a significant fraction of overall execution time. A primary focus of recent work with FACETS has been the introduction of robust and scalable parallel nonlinear solvers from the PETSc library into the parallel UEDGE edge transport simulation, with emphasis on scalable physics-based preconditioners. We are also exploring scalable solver issues for boundary turbulence modeling via BOUT++ and investigating issues in coupled multiphysics problems. Project URL: http://www.facetsproject.org Current FY Hours Used: undetermined amount New FY Requested allocation: 80000 Q1: 20000 Q2: 20000 Q3: 20000 Q4: 20000 Justification: Thank You, The LCRC Accounts System

1 0

New LCRC report submitted for Parallel_Fusion_PDEs
by support＠lcrc.anl.gov 08 Oct '11

08 Oct '11

Full project report at https://accounts.lcrc.anl.gov/reporting/project/2011/?project=Parallel_Fusi…

1 0

New LCRC report submitted for parvis
by support＠lcrc.anl.gov 03 Oct '11

03 Oct '11

Full project report at https://accounts.lcrc.anl.gov/reporting/project/2011/?project=parvis

1 0