On Mon, Oct 16, 2017 at 6:21 PM, Gibney, Dave <[email protected]> wrote:
> Verging philosophical, sometimes we settle for "works now" > Same where I work. In the past, we made a concerted effort to optimize our code mainly by using Strobe on long running, CPU intensive job steps. That "died" when the z system was declared "being killed off". Now that the IBMZ is back in the fold, I don't know what, if anything, we will do. But all we have is Enterprise COBOL 4.3. It is unlikely that we will upgrade even if said upgrade is free because we're still on a z9. > > > -----Original Message----- > > From: IBM Mainframe Assembler List [mailto:ASSEMBLER- > > [email protected]] On Behalf Of Richard Rogers > > Sent: Monday, October 16, 2017 4:18 PM > > To: [email protected] > > Subject: Re: The Pointlessness of handwriting "efficient" code (was One > Byte > > MVC Versus IC/STC) > > > > The First Rule of Program Optimization: Don't do it. The Second Rule of > > Program Optimization (for experts only): Don't do it yet. > > When developing or evaluating systems, you have three choices, fast, > cheap > > and good; choose two. > > > > -----Original Message----- > > From: IBM Mainframe Assembler List [mailto:ASSEMBLER- > > [email protected]] On Behalf Of Richard Kuebbing > > Sent: Monday, October 16, 2017 13:24 > > To: [email protected] > > Subject: Re: The Pointlessness of handwriting "efficient" code (was One > Byte > > MVC Versus IC/STC) > > > > Efficiency is doing things right. Effectiveness is doing the right > things. - Peter > > Drucker > > > > There is nothing so useless as doing efficiently that which should not > be done > > at all. - Peter Drucker > > > > -----Original Message----- > > From: IBM Mainframe Assembler List [mailto:ASSEMBLER- > > [email protected]] On Behalf Of Steve Smith > > Sent: Monday, October 16, 2017 3:02 PM > > To: [email protected] > > Subject: Re: The Pointlessness of handwriting "efficient" code (was One > Byte > > MVC Versus IC/STC) > > > > And if Dave Cole isn't a high enough authority (but he is :-)), > > > > "Programmers waste enormous amounts of time thinking about, or worrying > > about, the speed of noncritical parts of their programs, and these > attempts at > > efficiency actually have a strong negative impact when debugging and > > maintenance are considered. We should forget about small efficiencies, > say > > about 97% of the time: premature optimization is the root of all evil." > > > > Donald Knuth, "Structured Programming with Goto Statements". Computing > > Surveys 6:4 (December 1974), pp. 261–301, §1. > > > > > > sas > > > > > > ----------------------------------------- The information contained in > this > > communication (including any attachments hereto) is confidential and is > > intended solely for the personal and confidential use of the individual > or > > entity to whom it is addressed. The information may also constitute a > legally > > privileged confidential communication. If the reader of this message is > not > > the intended recipient or an agent responsible for delivering it to the > > intended recipient, you are hereby notified that you have received this > > communication in error and that any review, dissemination, copying, or > > unauthorized use of this information, or the taking of any action in > reliance > > on the contents of this information is strictly prohibited. If you have > received > > this communication in error, please notify us immediately by e-mail, and > > delete the original message. Thank you > -- I just child proofed my house. But the kids still manage to get in. Maranatha! <>< John McKown
