Yes, checkpointing is increasingly important in a high volume workd, but it is also increasingly more difficult. There is an OS facility for restarting from a checkpoint, but it has significant restrictions and I wonder whether it has been used in the last half century.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of Timothy Sipples [sipp...@sg.ibm.com] Sent: Thursday, September 23, 2021 12:26 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: The Business Case for Pipes in the z/OS Base (was: Re: REXX - Interpret or Value - Which is better?) I misplaced the original post, but somewhere in this thread someone commented that checkpointing is less important. I think I disagree, so just a quick comment from me. Yes, absolutely, there's much more computing power and much better I/O. There are also lots of efficiency gains -- much better compilers, for example. However, if anything the data volumes and related requirements are growing even faster. We've also seen recent, real world incidents involving major organizations failing to meet batch processing deadlines with serious consequences, in some cases to whole national economies. My anecdotal observation is that checkpointing is becoming more important at least on z/OS, not less. By sheer coincidence I'm having a technical conversation this afternoon that (when you boil it down to its essence) is "please implement a certain type of checkpointing." I interpreted this particular remark as a side comment, not really anything that genuinely affects whether pipes are useful in some cases. Yes, pipes are useful. It's not necessary to bash checkpointing in defense of pipes, or vice versa. - - - - - - - - - - Timothy Sipples I.T. Architect Executive Digital Asset & Other Industry Solutions IBM Z & LinuxONE - - - - - - - - - - E-Mail: sipp...@sg.ibm.com ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
