Structure of OpenVMS

[Muthuvel.B]

Hi All,

Can anyone help me in getting the structure of OpenVMS? For an examble the UNIX is structured as HARDWARE-KERNEL-SHELL like that.

Regards,
Muthuvel.B

[Kris Clippeleyr]

Hi,

Welcome to VMS.

Basically, VMS is a layered operating system. At the heart, you have the VMS kernel, performing basic functions, such as scheduling, memory management, interrupt handling, and I/O. The next layer (executive) is basically file management (RMS). The user interface (CLI = DCL) is handled in the next layer (supervisor). The outermost layer is where all (normal) user-written software executes.
In addition to this layered structure, VMS is highly modular making it easier to maintain & change (part of) the OS.

You can find references to god books about VMS on Phil Ottewell's page at:
http://www.yrl.co.uk/phil/vms/vms.html

Especially the books by Ruth Goldenberg about the "internals & data structures" of VMS are very interesting.

Hope this helps somehow.
Regards,
Kris (aka Qkcl)

[Robert Gezelter]

Muthuvel.B,

Ruth Goldenberg's Internals and Data Structures series is certainly a good start, as Chris has stated.

The basics of the structure is also covered in the documentation set, which is available on the www via the HP OpenVMS www site.

There have also been a variety of good descriptions of the basic OpenVMS structure in various long-published handbooks from Digital, back in the pre-Compaq days.

There are also some descriptions in the IEEE and ACM literature, which is available online on various bases.

- Bob Gezelter, http://www.rlgsc.com

[Muthuvel.B]

Hi Kris,Robert ,

I am very much pleased with the explanation provided. Also with the informations included with it. Thanks a lot.

I would like to know if there is any community or a group for OpenVMS and the associated stuffs. If so kindly add my id also to the team.

Thanks again for all your informations.
Muthuvel.B

[Hein van den Heuvel]

>> I would like to know if there is any community or a group for OpenVMS and the associated stuffs. If so kindly add my id also to the team.

You found one right here!
Check out the links on the 'family' page.

You may also want to check in at the comp.os.vms newsgroup and www.openvms.org and of course hp's main vms site:
http://www.hp.com/go/openvms



hth,
Hein.

[Ian Miller.]

For VMS Community see also www.openvms.org

[Muthuvel.B]

Hein van den,

Could you pls let me know Whatz the 'family' page as you replied earlier?

Muthuvel.B

[Hein van den Heuvel]

Oh, the 'family' is just a term they use in these itrc forums. If you look at the link for 'openvms' between 'IT Recourse forums' and 'networking' on top of this reply you'll see:

http://forums1.itrc.hp.com/service/forums/familyhome.do?familyId=288


Tru64 would be family 280, Linux 118,...
Just starting places for related sub-groups, not groups of related people. Sorry.

Cheers,
Hein.

[Robert Atkinson]

Muthuvel,
there's also the Yahoo VMS group, if your that way inclined :-

http://groups.yahoo.com/group/OpenVMS_Friends/

Rob.

[comarow]

There are two other sources for OpenVMS community I'd like to recommend.

There is a news group comp.os.openvms
There is also a user group on
Eisner.decus.org
You can get an account with Encompasserve,
what used to be DECUS forum.

It is free. Log in and request an account.
There are what are known as note conferences. There is an excellent signal to noise ratio.

I hope you enjoy OpenVMS.

Bob Comarow

[Ian Miller.]

See also http://www.openvms.org
and
http://h71000.www7.hp.com/wizard/student_research.html

[Antoniov.]

Nice to meet you!
Another interesting web site is process software http://www.process.com/openvms/index.html

Antonio Vigliotti