Example 3.7 Sequential Scheduling of Projects

Suppose the schedule displayed in Output 3.6.4 is not acceptable; you want the first book to be finished as soon as possible and do not want resources to be claimed by the second book at the cost of the first book. One way to accomplish this is to enable activities related to the second book to be split whenever the first book demands a resource currently in use by the second book. If you do not want activities to be split, you can still accomplish your goal by sequential scheduling. The structure of the input and output data sets enables you to schedule the two subprojects sequentially.

This example illustrates the sequential scheduling of subprojects 'Book 1' and 'Book 2.' The following program first schedules the subproject 'Book 1' using the resources available. The resulting schedule is displayed in Output 3.7.1. The Usage data set bk1out is also displayed in Output 3.7.1.

/* Schedule the higher priority project first */
proc cpm data=book1 resin=resource
         out=bk1schd resout=bk1out
         date='1jan03'd interval=week;
   act      act;
   dur      dur;
   succ     succ;
   resource editor artist / per=avdate avp rcp;
   id       id;
   run;