March 2015 - Allocations-admins - mailman3.cels.anl.gov

Re: [allocations-admins] [LCRC Accounts] Project Allocation Request
by John Valdes 12 Mar '15

12 Mar '15

Any objections to granting 100K for the remainder of the quarter? John On Mon, Mar 09, 2015 at 11:14:16AM -0500, accounts(a)lcrc.anl.gov wrote: > > A change in allocation has been requested: > > Requester: svegendla (Prasad Vegendla) > Project: CFD-TPM [...] > Requested: 100000 > > A specific reason has been given: > Nek5000 simulations for multiphase boiling flows in Boiling water Reactors (BWR) reactors.Need to be run couple of cases (~20) for Nek-2P validation. > > This needs to be approved and the final allocation amount decided upon.

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Re: [allocations-admins] [LCRC Accounts] Project Allocation Request
by John Valdes 12 Mar '15

12 Mar '15

I assume this request for 10K was a mistake since another followed for 100K which matches the math given in the reason. John On Mon, Mar 09, 2015 at 11:10:27AM -0500, accounts(a)lcrc.anl.gov wrote: > Hello, > > A change in allocation has been requested: > > Requester: svegendla (Prasad Vegendla) > Project: NE_RANS [...] > Requested: 10000 > > A specific reason has been given: > StarCCM+ simulations for Vehicle optimization program.Need to be run 10 cases, each case will take around 10000 cpu hours. > > This needs to be approved and the final allocation amount decided upon. >

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computational hours request
by Vegendla, Surya Narayana Prasad 12 Mar '15

12 Mar '15

Shashi, My projects 'NE_RANS' and 'CFD-TPM' are in out-off computational hours. I have requested 100 K hours in my lcrc account (to use until mid of April). Could you please process my request asap. Thanks, Prasad

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[LCRC Accounts] Project Allocation Request
by accounts＠lcrc.anl.gov 12 Mar '15

12 Mar '15

Hello, A change in allocation has been requested: Requester: raok (Rao Kotamarthi) Project: Atmos_Chem Title: Process Scale Modeling of Atmospheric Chemistry and Transport Description: We continue to investigate the regional scale climate modeling and data assimilation of aerosols in chemical transport models. The models employed for these studies include (a) WRF-CHEM (b) NRCM and (3) GEOS-CHEM. Each of these models has been ported to the fusion luster and uses to perform calculations by our group. All the codes use a mix of MPI and OpenMP programming models and can scale for as few as 4 nodes to several hundred. The GEOS-CHEM model doesn't scale beyond 32 nodes due to gridding constraints. The NRCM (Nested Regional Scale Climate Model) and the WRF-CHEM models are highly scalable and limited by job turnover times and queue limitations. The project will have approximately 4 members. Current: undetermined amount Justification: Requested: 100000 A specific reason has been given: We have just received funding to support the DOE EERE for a modeling project that uses high resolution models at wind farm scale. We plan to test WRF-MPS and WRF-LES for this project and port these models to Mira /NERSC in the near future This needs to be approved and the final allocation amount decided upon. Thank You, The LCRC Accounts System

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[LCRC Accounts] Project Allocation Request
by accounts＠lcrc.anl.gov 09 Mar '15

09 Mar '15

Hello, A change in allocation has been requested: Requester: svegendla (Prasad Vegendla) Project: NE_RANS Title: RANS-based CFD for Nuclear Reactors Description: Anticipated CFD support of nuclear reactor analysis in FY15 includes: • Supporting NNSA’s efforts under the GTRI-Convert program to convert research reactors fueled with highly-enriched uranium to instead employ low-enriched uranium, and in doing so reduce the associated proliferation risk. Such reactor conversions require significant analysis to ensure that their cool ability under a range of conditions. Given the range of geometry and flow conditions presented by the various research reactors under consideration, a general-purpose thermofluid analysis capability—like CFD—is required. • Supporting advanced reactor systems modeling by coupling STAR-CCM+ to system codes for transient analysis of postulated adverse events, to ensure that the reactor remains cool even under highly unlikely multi-component failures. • Supporting advanced modeling and simulation efforts under the DOE-NE NEAMS program by integrating STAR-CCM+ into the SHARP reactor analysis package. By including STAR-CCM+ as an optional component in SHARP will provided needed flexibility and enhance the access for new users to the advanced modeling and simulation toolkit. • Support of design and safety analysis of sodium-cooled fast reactors for the DOE-NE Advanced Reactor Concepts program. • Verification and validation of STAR-CCM+ for nuclear rector analysis. • In work for others program, several STAR-CCM+ simulation runs are planned to optimize the aerodynamic and underhood thermal analysis of the heavy-duty vehicles. STAR-CCM+ has been employed by analysts in the Nuclear Engineering Division on LCRC clusters since its inception (both Jazz and Fusion), and has demonstrated good scalability up to several hundred cores. Recent simulations on 720 Fusion cores reported only 15% overhead associated with MPI communication. This project will be used by 5-10 STAR-CCM+ analysts in the NE Division. Current: undetermined amount Justification: STARCCM+ is a highly scalable tool on fusion. NE users demonstrated good scalability up to several hundred cores. Recent simulations on 720 Fusion cores reported only 15% overhead associated with MPI communication. Requested: 100000 A specific reason has been given: StarCCM+ simulations for Vehicle optimization program.Need to be run 10 cases, each case will take around 10000 cpu hours. This needs to be approved and the final allocation amount decided upon. Thank You, The LCRC Accounts System

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[LCRC Accounts] Project Allocation Request
by accounts＠lcrc.anl.gov 09 Mar '15

09 Mar '15

Hello, A change in allocation has been requested: Requester: svegendla (Prasad Vegendla) Project: CFD-TPM Title: Computational Fluid Dynamics Modeling of Two-phase Boiling Flow and Critical Heat Flux Description: In boiling water reactors, dryout is an important limiting phenomenon in the design of heat exchangers and is associated with the disappearance of the liquid film on the wall in heat exchanger tube. A consequence of this non-wetting heated surface deteriorates the convective heat transfer mechanism resulting in a large rise in the wall temperature of heat flux imposed system such as nuclear reactor fuel rod assemblies. Since dryout is a hydrodynamic phenomenon involving entrainment and redeposition of droplets as well as boiling/evaporation of the liquid, the location of dryout is dynamic and its fluctuation may also give rise to thermal fatigue and corrosion. A large number of experimental and theoretical studies have been conducted over the past several decades to understand and quantify the processes leading to dryout in a heat exchanger tube. * Nek5000 is a highly-scalable open-source transient CFD code developed by MCS-Argonne National Laboratory. This code is based on spectral element method and it is written in basic FORTRAN and C languages. It has more than 200 users world-wide and a long history of development, verification, and validation. * In this project, Nek5000 is used as a platform to develop drift-flux and two-fluid model. * In order to validate the Nek5000 development for two-phase boiling capability, several simulation runs are planned for wide range of pressure, mass flux and wall heat flux. * In FY2014, blues allocated hours are efficiently used for projects of NE_RANS and SHARP-IF. * A total of 3 members can use the allocated hours Current: undetermined amount Justification: Nek5000 is a highly scalable tool on fusion. NE users demonstrated good scalability up to several hundred cores. Recent simulations of homogeneous two-fluid boiling model on Fusion cores reported 10% and 58% overhead associated with MPI communication for 128 and 256 cores, respectively. Requested: 100000 A specific reason has been given: Nek5000 simulations for multiphase boiling flows in Boiling water Reactors (BWR) reactors.Need to be run couple of cases (~20) for Nek-2P validation. This needs to be approved and the final allocation amount decided upon. Thank You, The LCRC Accounts System

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[LCRC Accounts] Project Allocation Request
by accounts＠lcrc.anl.gov 09 Mar '15

09 Mar '15

Hello, A change in allocation has been requested: Requester: svegendla (Prasad Vegendla) Project: NE_RANS Title: RANS-based CFD for Nuclear Reactors Description: Anticipated CFD support of nuclear reactor analysis in FY15 includes: • Supporting NNSA’s efforts under the GTRI-Convert program to convert research reactors fueled with highly-enriched uranium to instead employ low-enriched uranium, and in doing so reduce the associated proliferation risk. Such reactor conversions require significant analysis to ensure that their cool ability under a range of conditions. Given the range of geometry and flow conditions presented by the various research reactors under consideration, a general-purpose thermofluid analysis capability—like CFD—is required. • Supporting advanced reactor systems modeling by coupling STAR-CCM+ to system codes for transient analysis of postulated adverse events, to ensure that the reactor remains cool even under highly unlikely multi-component failures. • Supporting advanced modeling and simulation efforts under the DOE-NE NEAMS program by integrating STAR-CCM+ into the SHARP reactor analysis package. By including STAR-CCM+ as an optional component in SHARP will provided needed flexibility and enhance the access for new users to the advanced modeling and simulation toolkit. • Support of design and safety analysis of sodium-cooled fast reactors for the DOE-NE Advanced Reactor Concepts program. • Verification and validation of STAR-CCM+ for nuclear rector analysis. • In work for others program, several STAR-CCM+ simulation runs are planned to optimize the aerodynamic and underhood thermal analysis of the heavy-duty vehicles. STAR-CCM+ has been employed by analysts in the Nuclear Engineering Division on LCRC clusters since its inception (both Jazz and Fusion), and has demonstrated good scalability up to several hundred cores. Recent simulations on 720 Fusion cores reported only 15% overhead associated with MPI communication. This project will be used by 5-10 STAR-CCM+ analysts in the NE Division. Current: undetermined amount Justification: STARCCM+ is a highly scalable tool on fusion. NE users demonstrated good scalability up to several hundred cores. Recent simulations on 720 Fusion cores reported only 15% overhead associated with MPI communication. Requested: 10000 A specific reason has been given: StarCCM+ simulations for Vehicle optimization program.Need to be run 10 cases, each case will take around 10000 cpu hours. This needs to be approved and the final allocation amount decided upon. Thank You, The LCRC Accounts System

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Re: [allocations-admins] [LCRC Accounts] Project Request: homme_moab
by John Valdes 04 Mar '15

04 Mar '15

10K for current quarter, Misun as POC, P:Cli On Tue, Mar 03, 2015 at 07:02:28PM -0600, 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: Iulian Grindeanu > Applicant's institution: ANL > Applicant's division: MCS > Project Name: homme_moab > Project title: Scalable Advection Methods for Multi Tracers in Climate Codes > Associated funding: SciDAC FASTMATH, ACES4BGC, DOE > Other Systems: VESTA / MOAB -scalability , have trouble compiling there > Science: One of the important goals of ACES4BGC project (Applying Computationally Efficient Schemes for BioGeochemical Cycles) is to implement and optimize new computationally efficient advection algorithms for large number of tracer species. This work demonstrates a framework that uses intersection algorithms developed in MOAB (Mesh Oriented datABase), linked with a HOMME dynamical core driver. > Project description: The development was done on MCS workstations; the driver is a dynamical core from CESM (Homme). Moab is used to compute intersection between meshes at different time steps; results from intersection (polygons on a sphere), are used to evaluate the concentrations (tracers) at next time steps. > > Use MPI based communication; need to run benchmarks at 1/8 degree and 1/4 degree, on the sphere (need at least 30 nodes on blues for that, dues to memory requirements) > > software needed: MPICH, NETCDF, HDF5, Homme, MOAB, PNETCDF, > Industry partnership: > Project URL: http://www.aces4bgc.org/ > Requested allocation: 10000 > Q1: 0 > Q2: 10000 > Q3: 0 > Q4: 0 > Justification: > Storage requirements: > > > 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)lcrc.anl.gov > https://lists.lcrc.anl.gov/mailman/listinfo/allocations-admins

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Re: [allocations-admins] [LCRC Accounts] Project Request: storage_cask
by John Valdes 04 Mar '15

04 Mar '15

100K for current quarter, priority 3, same as other NE projects. John On Tue, Mar 03, 2015 at 10:02:01AM -0600, 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: Jie Li > Applicant's institution: ANL > Applicant's division: NE > Project Name: storage_cask > Project title: Thermal Analyses of Vertical Spent Fuel Storage Cask by Using Parallel CFD Approach > Associated funding: DOE EM and NE office > Other Systems: We have a dedicated ???ANSYS??? server with 12 cores in total (8 of them are used for MPI parallel calculation via one pack ANSYS-Fluent license). Recently we have purchased a license for additional two HPC packs, which enables us to use the total computer cores to 128 if we can use LCRC's facility. > Science: Spent nuclear fuel needs to be stored safely in a vertical storage cask for a period that may be longer than 40 years. The host containers for spent fuel must be robust enough to perform their confinement functions during the extended period. Simulation of temperature fields of the spent fuel and its storage cask is critical to determine the cladding temperature, canister surface temperature, concrete overpack temperature, as well as their peak locations (or regions of interest such as the weld heat affected zones) because most materials degradation mechanisms are temperature-dependent with rates generally increasing with temperature. Elucidating heat transfer mechanisms is also important in aiding the design of an advanced storage cask. > > The proposed project is to study thermal hydraulics in a commercial scale spent fuel storage cask by using the ANSYS/Fluent CFD code. The thermal performances of the vertical cask will be simulated for various events such as vent blockage, filled gas leakage, and ambient temperature variations. Our work will contribute to the understandings of the role of natural convection in the passive cooling of spent fuel in the vertical storage cask, and what is the key parameter(s) that controls heat dissipation. This study will generate useful knowledge that can guide and enable novel designs of a vertical fuel storage cask. Moreover, this study will also aid in aging management by providing guidance on inspection and monitoring. > > Project description: This project is to conduct thermal analyses for a commercial-scale vertical spent fuel storage cask to obtain the information important to safety storage of spent fuel including peak cladding temperatures, canister surface temperatures, as well as the corresponding temperatures under abnormal operating conditions (e.g. gas inlet blockage). Particularly, we aim to identify the key parameter(s) that dominates heat dissipation out of the cask, thereby guiding the optimized design of a storage cask. > > The CFD code of ANSYS/Fluent will be employed, which can conduct a large scale parallel simulations using up to 12, 000 cores. In this work, the maximum cores of 128 will be employed which is licensed via SimuTech Inc. (starting from March 15, 2015). > > As compared to our existing server (12 cores, 8 of them are being used), Blues can boost the computational rate approximately ten times (per our scaling analysis), suggesting that using blues can save a significant amount of time. > > For this problem, mutual interactions between fluid flow and heat transfer exist (per natural convection). As such, it takes a relatively longer time to get it converged. Additionally, it is further complicated by > > 1) thermal radiation at an elevated temperature environment, and > 2) a large cask dimension (~5 million cells), both being extremely time consuming. > > As a result, it will need a long time for a CFD code to run and converge. > > Based on our computational rate analysis, it takes about 23 hours to complete a single run for such a case when 128 cores are used. In FY 15, we plan to conduct 75 runs. Including time for development and debugging, this project will need about 450,000 core-hours in total. > > Industry partnership: > We have a close connections with Holtec. International Inc., the vendor who designs this storage cask. > Project URL: > Requested allocation: 450000 > Q1: 100000 > Q2: 100000 > Q3: 150000 > Q4: 100000 > Justification: > Storage requirements: 1 TB will be enough. > > > 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)lcrc.anl.gov > https://lists.lcrc.anl.gov/mailman/listinfo/allocations-admins

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[LCRC Accounts] Project Request: homme_moab
by accounts＠lcrc.anl.gov 03 Mar '15

03 Mar '15

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: Iulian Grindeanu Applicant's institution: ANL Applicant's division: MCS Project Name: homme_moab Project title: Scalable Advection Methods for Multi Tracers in Climate Codes Associated funding: SciDAC FASTMATH, ACES4BGC, DOE Other Systems: VESTA / MOAB -scalability , have trouble compiling there Science: One of the important goals of ACES4BGC project (Applying Computationally Efficient Schemes for BioGeochemical Cycles) is to implement and optimize new computationally efficient advection algorithms for large number of tracer species. This work demonstrates a framework that uses intersection algorithms developed in MOAB (Mesh Oriented datABase), linked with a HOMME dynamical core driver. Project description: The development was done on MCS workstations; the driver is a dynamical core from CESM (Homme). Moab is used to compute intersection between meshes at different time steps; results from intersection (polygons on a sphere), are used to evaluate the concentrations (tracers) at next time steps. Use MPI based communication; need to run benchmarks at 1/8 degree and 1/4 degree, on the sphere (need at least 30 nodes on blues for that, dues to memory requirements) software needed: MPICH, NETCDF, HDF5, Homme, MOAB, PNETCDF, Industry partnership: Project URL: http://www.aces4bgc.org/ Requested allocation: 10000 Q1: 0 Q2: 10000 Q3: 0 Q4: 0 Justification: Storage requirements: 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

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