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- Xref: sparky comp.sys.dec:5804 comp.os.vms:17517
- Path: sparky!uunet!gumby!destroyer!cs.ubc.ca!bcsystems!ewilts
- From: ewilts@galaxy.gov.bc.ca (Ed Wilts)
- Newsgroups: comp.sys.dec,comp.os.vms
- Subject: Re: alpha memory requirements (vs vax) ?
- Message-ID: <1992Nov5.105310.1181@galaxy.gov.bc.ca>
- Date: 5 Nov 92 10:53:10 -0800
- References: <1992Nov5.113540.1@uwovax.uwo.ca>
- Reply-To: EWILTS@GALAXY.GOV.BC.CA
- Organization: BC Systems Corporation
- Lines: 27
-
- In article <1992Nov5.113540.1@uwovax.uwo.ca>, brent@uwovax.uwo.ca (Brent Sterner) writes:
- > Just curious about memory demands for alpha. I'm running a VAX 4500
- > with 128 MB memory. Of that, SHO MEM tells me "38393 pages are permanently
- > allocated to VMS". How big is VMS on an alpha system? (Perhaps someone with
- > an alpha could post the last line from SHO MEM, though it might be misleading
- > if there is a lot of dbugging code still in place.
-
- This doesn't make any sense. You seem to be under the impression that the
- pages permanently allocated to VMS is fixed depending on the VMS version number
- and the hardware platform. Far from it! It's based a lot on what SYSGEN
- parameters you have set to what values - a system configured for a large number
- of users will typically have more overhead pages than small-user systems.
-
- > Does a typical user (VAXC or FORTRAN) program require more or less memory on
- > an alpha system?
-
- More. It stands to reason that every executable will be larger in size. If
- you have a reduced instruction set, it's obvious that you'll normally need more
- instructions to do the same job.
-
- Disclaimer: I haven't played with an Alpha yet - I'm basing my last paragraph
- on theory, not practical experience.
-
- --
-
- Ed Wilts, BC Systems Corp., 4000 Seymour Place, Victoria, B.C., Canada, V8X 4S8
- EWilts@Galaxy.Gov.BC.CA | Ed.Wilts@BCSystems.Gov.BC.CA | (604) 389-3430
-