> How about a version to where during the install you specify what is the lowest processor you might run on?
You have not yet read the materials it seems. The "Automatic" of the name is perhaps not as automatic as you're thinking. You basically tell the optimizer for which architecture level(s) you want optimized library versions to be produced, and (when the z/OS infrastructure is available) the system will select (based on your specification) the proper library that you have had the product build (without that support, you get to do that library selection yourself, by manipulating the JCL or by use of data set aliases or some such). Please note that while the ABO product is available now, the z/OS infrastructure will not be available until December 10 or so (this is the IEFOPZ infrastructure mentioned in the z/OS 2.2 announce). >And since this is machine code, why would this be limited to Cobol? >It should be able to handle any language as long as you can analyze >the run time libraries too. Only if it is omniscient. This is machine code. You cannot (by definition) tell data from instructions. Knowing that the machine code is "something in particular" (in this case COBOL) lets some assumptions be made about what are data and what are instructions. >It is essentially an alternative to V5 It is an alternative, but for a different use case (as a subsequent append mentioned) -- where you don't have the source or where you have reason not to want to use COBOL V5. >Seems like some extra steps. Steps, yes. Extra? I'd say "pretty necessary steps". Sure the system could automatically rerun the optimizer at every time that you re-save your source (or at some other level of granularity). And then you'd be spending orders of magnitude more machine cycles doing the processing than you'd gain back by the improved performance when running the program. Likely a huge net loss. So the choice is to let the customer who knows make the decision of when it's worth running the ABO. For one of the use cases (no source), of course, there never will be source updates. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
