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- From: dwight@geohub.gcn.uoknor.edu (Dwight D. Moore)
- Newsgroups: comp.sys.dec,comp.os.vms
- Subject: Re: alpha memory requirements (vs vax) ?
- Message-ID: <1992Nov6.172941.28490@constellation.ecn.uoknor.edu>
- Date: 6 Nov 92 17:29:41 GMT
- Article-I.D.: constell.1992Nov6.172941.28490
- References: <1992Nov5.113540.1@uwovax.uwo.ca>
- Sender: usenet@constellation.ecn.uoknor.edu (Usenet Administrator)
- Reply-To: dwight@geohub.gcn.uoknor.edu
- Organization: Geosciences Computing Network, Univ. of Oklahoma
- Lines: 32
- Originator: usenet@kittyhawk.ecn.uoknor.edu
-
- 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. Perhaps someone inside
- |>DEC has a non-debugging system they could use.) Is there a rule of thumb for
- |>typical programs ("alpha memory needs"/"vax memory needs" ~= "constant")?
- |>Does a typical user (VAXC or FORTRAN) program require more or less memory on
- |>an alpha system?
- |> Thanks, b.
- |>--
- |>Brent Sterner Manager, Academic Technical Support
- |>
-
- Here it is on a DEC 3000/500 (Flamingo) running OpenVMS 1.0 (field test)
- "Of the physical pages in use, 934 pages are permanently allocated to VMS."
-
- However, this is misleading since the OpenVMS is using "pagelets" and variable size pages.
- The SYSGEN parameter PAGE_SIZE on our machine is 8192. I believe the pagelets are 512
- byte blocks. This usage on your system will depend on SYSGEN parameters, e.g. how
- much GBL pages/sections you set up.
-
- ----------------------------------------------------------------------------
- Dwight D. Moore
- Geosciences Computing Network
- University of Oklahoma
-
- dwight@geohub.gcn.uoknor.edu (129.15.40.10)
- These opinions do not necessarily represent the opinions of OU or the GCN.
- ----------------------------------------------------------------------------
-