I need some help. If you using option 3.13 to compare a dataset that you can get the Hashsum of a member of a PDS. Please help if I do not want to get it from the superc compare what are the method that I can get the hashsum for a member. The purpose is try to improve the performance.
I need to fine tune a REXX program from 10 hours to 2 hours. I wonder if you use an external subroutine will improve the efficiency or slow down the efficient. Is it a good idea to pass to external subroutine with a big array. Any tools can help with this process except using sysvar(syscpu). Will strobe be helpful?
using GL for a subroutine what can be gain from that will it run faster or less resource?