Granted 50K now and let the user know we’ll be making a further decision Monday. -- John Roberts Argonne National Laboratory CELS Systems [email protected] On 12/7/16, 10:51 AM, "[email protected] on behalf of Bair, Raymond A." <[email protected] on behalf of [email protected]> wrote: This one is a bit tricky, since the original request was reduced so much by the committee. I suggest granting 50K now and deferring the blanc of 250K to the committee on Monday. Ray ----------------------------------------- Ray Bair Argonne National Laboratory On 12/7/16, 9:32 AM, "[email protected] on behalf of [email protected]" <[email protected] on behalf of [email protected]> wrote: Hello, A change in allocation has been requested: Requester: zhanga (Anqi Zhang) Project: ignition-plasma Title: Numerical Investigation of Plasma Fundamentals for Engine Ignition Applications Description: There are two major goals for this project: • Establish proper methodology to characterize different ignition systems and assess their effects on engine combustion • Investigate practical solutions to integrate essential physical processes to larger-scale engine simulations Detailed energy deposition method in Eulerian domain has been used and yielded promising results for conventional systems in FY2016. In FY2017, similar numerical approach will be carried on to: 1) improve conventional spark ignition model to account for local flow effects; 2) characterize non-equilibrium plasma discharge against experimental measurements (x-ray radiography and O-TALIF); 3) identify dominate species and reactions induced by non-equilibrium plasma ignition systems; 4) evaluate the effect of electric field; and 5) validate ignition model performance against optical flame kernel measurements. Simulations of this project will be performed using CONVERGE CFD code which features run-time mesh generation that speeds up pre-processing. Paraview together with python scripts will be used for post processing of CFD results. The computational cell count is on the order of one to a few million cells depending on the physical geometries. Currently, there will be only one member user (zhanga) working regularly on this project performing on average 2 jobs daily. A typical job would require 48-96 cores, yielding an estimation of quarterly core-hrs requirement of 64 cores x 24 hrs x 90 days x 2 jobs = 276,480. In addition, a portion of post processing will also be carried on the cluster to save file transfer time. With moderate queuing time taken into account, 225,000 core-hrs per quarter are requested for FY2017 for this project. The efforts will be distributed relatively evenly throughout the year. Current: undetermined amount Justification: Previous scalability tests performed on Blues have shown acceptable efficiency on up to 4 nodes: Job: Detailed energy deposition for spherical flame development in Eulerian domain (first 80 time steps during which high power energy release occurs): Nodes Wall Time Used (sec) Efficiency 1 node (16 cores) 3613 - 2 nodes (32 cores) 2053 88% 3 nodes (48 cores) 1502 80% 4 nodes (64 cores) 1195 76% Requested: 300000 A specific reason has been given: I'm requesting 300,000 core-hours for the rest of first half fiscal year 2017 (Oct-Mar). My original request (at beginning of FY2017) was 450,000 for the first half and was granted only 150,000. At this stage (about 1/3 of the first half of the fiscal year) the account balance is very low already, which shows a good match with originally expected core-hour consumption. Thus I'm asking to match the originally requested amount. This needs to be approved and the final allocation amount decided upon. Thank You, The LCRC Accounts System _______________________________________________ allocations-admins mailing list [email protected] https://lists.lcrc.anl.gov/mailman/listinfo/allocations-admins