On Tue, Jan 21, 2014 at 2:42 PM, John Gilmore <jwgli...@gmail.com> wrote:
> This thread has been curiously silent about one characteristic of > routines/instructions executed above the bar. Unsurprisingly, they > are measurably faster than their analogues executed below it. > z/Architecture is 64-bit architecture > That is surprising. Are you saying that if I run an AMODE(64) routine which is physically loaded above the bar and the identical program again physically loaded below the bar, that the fact that the instructions executed are above the bar causes the hardware to execute them faster? That is "a mind boggling thing" as Bo Pilgrim used to say. > > This is not, of course, their only or even their most important merit. > Statesmanlike discussion of the relative merits of data spaces and > memory objects is, at best, moot. The future, if there is one, is > above the bar, for both data and executables. > I will definitely agree with that. > > John Gilmore, Ashland, MA 01721 - USA > > -- Wasn't there something about a PASCAL programmer knowing the value of everything and the Wirth of nothing? Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
