Hello, A change in allocation has been requested: Requester: borland (Michael Borland) Project: ApsRenewalLattice Title: Lattice Development and Beam Dynamics for APS Upgrade Description: APS has developed a method of using multi-objective genetic algorithms (MOGA) for optimization of accelerator lattices. In past years, this method has been applied successfully using fusion, intrepid, and a small APS cluster to development and evaluation of lattices for the APS Upgrade. In the coming year, we are working on a multi-bend achromat (MBA) lattice design that promises to push APS x-ray brightness to world-leading levels. Significant progress has already been made and results are very encouraging. Our approach is to create a series of lattices that gradually push performance up while simultaneously incorporating on-going constraints derived from on-going interactions with magnet and vacuum system designers. As such, the process is naturally iterative, working toward a major technical review in December 2013 and a major project review in Spring 2014. In addition to MOGA, we will perform ensemble evaluation to assess the robustness of solutions, evaluate effects of insertion devices, and explore collective instabilities. The codes being used have all been used in past years on fusion. These include Pelegant, a parallel accelerator simulation code used primarily for particle tracking and acceptance determination, as well as a Tcl script used for genetic optimization. The simulations are close to embarrassingly parallel and thus scale very well. Current: undetermined amount Justification: The code is already running efficiently on Blues. Scaling is very good because the code is close to embarrassingly parallel. The MOGA script runs many simultaneous, unconnected jobs, each using 2 nodes. Because each job uses only 32 cores, scaling is not relevant. Jobs are sized to take advantage of the number of cores provided, e.g., by tracking n*32 particles so that each core has an approxiamtely equal workload. Requested: 2000000 A specific reason has been given: On-going development of the lattice for APS upgrade needs significant resources and will continue to do so for about another month as we respond to the recent physics review and prepare for the Conceptual Design Report. This needs to be approved and the final allocation amount decided upon. Thank You, The LCRC Accounts System