Increase in size would indicate small subroutines converted to instream code. Branches are expensive, so more core means faster / less CPU programs, at expense of more memory / I/O.
On Wed, Jun 1, 2016 at 11:40 AM, Paul Strauss <[email protected]> wrote: > My customer wants to start the migration to Enterprise COBOL V5.2. I know > V6.1 is out but we need to get going on this project. I have deleted all > COBOL compilers below Enterprise COBOL V4.2 from their systems. I worked > with an applications representative and they have decided on the compiler > options they want. Load library conversion to PDSE is complete. Analysis > of load libraries looking for OS/VS COBOL and determining which of those > load modules are still in use has been determined and they will be > recompiled either with Enterprise COBOL V4.2 or V5.2. I know there are > some others things to look at but these are done. > > If there is a COBOL specific web site for these types of questions that > would be a better place for these questions please let me know. > > Some users have been playing with the new compiler and comparing it with > Enterprise COBOL V4.2. They have picked a few current programs and > compiled, linked and run them. One load module was 3-4 times as big when > compiled with OPT(2). With OPT(0) it was %50 larger. Is this a typical > increase in size for V5.2 compiles? > > Has anyone noticed a difference in CPU execution time either way? > > A size increase would not be a big problem but a large increase in CPU > time would be. > > Thank You, > > Paul Strauss > > IBM Global Services > z/OS MVS and Program Products > Department F2VE > 150 Kettletown Rd. > Southbury, CT 06488 > (203) 272-2758 > [email protected] > > NOTICE: This e-mail message and all attachments may contain confidential > information intended solely for the use of the addressee. If you are not > the intended recipient, you are hereby notified that you may not read, > copy, distribute or otherwise use this message or its attachments. If you > have received this message in error, please notify the sender by email and > delete all copies of the message immediately. > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
