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9-GrC421_Scheduling

9-GrC421_Scheduling - EDD Prioritize jobs by due date(time...

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1 ment for Print and Digital Media ersity Multi-Product & Single Product Line Scheduling GrC 421 Production Managem California Polytechnic State Unive ment for Print and Digital Media ersity Single Product Line Scheduling SPL Scheduling : Scheduling system that is process specific to a repetitive process printer (periodicals printer or gravure printer) that operates on one type of press. GrC 421 Production Managem California Polytechnic State Unive ment for Print and Digital Media ersity Single Product Line Scheduling How do we schedule multiple jobs on press? Evaluate delivery goals Minimize average flow time per job (the time customers wait for a job to be completed) Minimize the maximum lateness of any job Minimize number of late jobs GrC 421 Production Managem California Polytechnic State Unive Priority decision rules Shortest Processing Time (SPT) Earliest Due Date (EDD) Match the delivery goal ment for Print and Digital Media ersity Shortest Processing Time (SPT) SPT: Prioritize jobs by time required on press 1. Quickest job is done first 2. The next quickest is second 3. Etc. GrC 421 Production Managem California Polytechnic State Unive ment for Print and Digital Media ersity Earliest Due Date (EDD) EDD: Prioritize jobs by due date (time) 1. Earliest due date is done first 2. The next earliest is second 3. Etc. GrC 421 Production Managem California Polytechnic State Unive ment for Print and Digital Media ersity Decision Priority Rules MATCH DELIVERY GOAL : The delivery goal can be matched with the decision priority rules. 1. Minimize Average Flow Time – SPT Shortest average flow time 2. Minimize Max Job Lateness – EDD K th i l t f j b GrC 421 Production Managem California Polytechnic State Unive Keeps the maximum lateness of any job
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