-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 05/10/07 22:34, cga2000 wrote: > On Thu, May 10, 2007 at 06:04:06PM EDT, Ron Johnson wrote: >> On 05/10/07 11:27, william pursell wrote: [snip] >>> be sitting in the editor where you left it. It provides >>> continuity by allowing you to leave your shells running >>> for months at a time without having to put those >>> phenomenally lame signs on your monitor that say, >>> "please don't log me out, I'm running a simulation >>> that may take a while and have to lock up this terminal >>> because I don't know any better." >> Yes, but competent OSs have batch queues for running such jobs. Why >> Unix has never had such a capability is beyond my understanding. > > Not an authority on these matters but maybe this may have to do with the > fact that the hardware was designed to do heavy batch processing in the > first place. And so the OS .. and later .. the applications followed > suit. > > Assuming what I have in mind is an example of a "competent OS" > > :-) > > So your question might be turned around as in .. how come an OS like > MVS, for instance .. has/had at least four "job schedulers" that I can > think of off the top of my head .. and all of them save one from > third-party vendors.
Because JES2 & JES3 suck? > It's just about all these machines do but they do it very well. > > So if you are serious about running hundreds of jobs every night that > basically open a bunch of files do a few million I/O's and close the > files .. all without any form of human interaction .. you probably want > one of those. IBM's big systems are the canonical examples, but other OSs also have batch queues. OpenVMS & OS/400 being other examples, but VMS is also an excellent interactive OS. >> (NO!! cron is *not* an adequate substitute for batch queues!) > > .. wonder if AIX has anything a bit more sophisticated than cron .. - -- Ron Johnson, Jr. Jefferson LA USA Give a man a fish, and he eats for a day. Hit him with a fish, and he goes away for good! -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFGQ+uxS9HxQb37XmcRAj+IAKCRKtjXQfsf4XflvDEHexGNZuYtewCeII6y Ns95wVmPnCWwP6tBln0HQu0= =bZFs -----END PGP SIGNATURE----- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]