Home · Articles · Downloads · Hobby Wear · Forums · Web Links · News CategoriesSunday, April 22, 2018
Navigation
Home
Articles
Downloads
Hobby Wear
FAQ
Forums
Web Links
News Categories
Contact Us
Photo Gallery
OpenVMS Bigot
Search
Users Online
Guests Online: 6
No Members Online

Registered Members: 7,098
Newest Member: amacmahon
PdfFactory Pro Enterprise 2.31, MATFOR 4.00.061031 in Lahey Fortran, Adobe PhotoShop 9.0 CS2 oem, Trend Micro InterScan VirusWall 6.0, Adobe Acrobat 7.0 Professional sale, Salon Iris 5.05, Drafix Pro Landscape 11.2, oem Adobe PhotoShop CS 8.0 cheap buy, Catia 5 R12 P3 with SP2, Mcafee Secure Internet Gateway 4.5, oem Adobe Acrobat Professional 8 oem, Visual UML 4.1 Developer Edition, sale Adobe CS3 Design Premium Vol for Mac low price, Nuance Dragon Naturally Speaking 9.0 Professional With SP1, Adobe After Effects Plugins, low price AutoCAD 2006 cheap buy, Avid NewsCutter XP 3.8, The Movie Library 1.7.11, oem Adobe Creative Suite Premium Edition 2.0, ProFlyers 6.0 PDF Forms for Adobe Acrobat, PTC Pro Engineer Routed Systems Designer 5.0, sale DVDXCopy Platinum 4.0.38, CyberBizPlan v1.0.165 WinAll, NeverCenter Silo 1.16b, cheap buy AutoCAD 2005, Norton Save And Restore 11, sale Adobe Creative Suite 3 Design Premium sale, Adobe Premiere Plugins Collection 2007, cheap buy Adobe Creative Suite Premium Edition 2.0 for Mac sale, Active Desktop Calendar 6.5.061124, sale Adobe Acrobat 6.0 Professional, X-Rite MonacoPROFILER Platinum 4.8, EmailUnlimited 6.1 Win98NTME, oem Adobe Photoshop CS3 Extended sale
Sponsors
Island Computer
View Thread
OpenVMS Hobbyist Program | Hobbyist Licensing | Alpha License PAK's
Author 2 CPU license
pampreen_d
Member

Posts: 10
Joined: 16.07.08
Posted on April 21 2009 15:35
I have a CS20 with a dual CPU alphaserver.

Is there a hobbyist license so I can use both CPU's?

Thanks
Dave
Author RE: 2 CPU license
martinv2
Member

User Avatar

Posts: 102
Location: Goslar, Germany
Joined: 02.10.07
Posted on April 22 2009 01:51
The OpenVMS-Alpha hobbyist license PAK is unlimited (UNITS=0), i.e. it works for any number of CPUs.

HTH,
Martin


http://vms.pdv-systeme.de/users/martinv/
http://vms.pdv-systeme.de/users/martinv/
Author RE: 2 CPU license
somersdave
Member

Posts: 63
Location: bristol,UK
Joined: 23.03.07
Posted on May 11 2009 10:35
Following on from 2 CPUs -

Having got OVMS 8.3 installed, TCPIP and MOTIF in a useable state on the Alpha 4000 and 4100 (after some kind generosity and help) I've started thinking about how to use the systems.

Four CPUs looked like a good opportunity to make life more complicated smiley and maybe learn something new, whilst getting back-into programming, perhaps.

I wrote a small Fortran Program .F90 (I hope it has some future) in my base priv. user account and tried the 'intrinsic', NUMBER_OF_PROCESSORS which returned '1'
I was expecting to see '4'. $SHOW CPU reveals 4 active cpu's.

I wondered if I need the SMP license to use more than 1 processor, selectively. In general there seem to be several ways of approaching multiprocessing, eg : SYSTEM routine CREPRC and RTL PPL routines - though looking at these it doesn't look like one can select a particular CPU (ie:0 - 3) and the alien - to me - POSIX threads interface routines (kthreads and pthreads?) I believe the HP Fortran with its extensions provides for parallel multiprocessing.

I think i read somewhere that one would normally let the system work out how to best use the CPUs available but I was wondering if there are problems which are ideally suited to having >1 CPU. I did some work many years ago on FPS array processors which I vaguely remember required using parallel programming techniques.
Edited by somersdave on May 11 2009 10:44
Author RE: 2 CPU license
somersdave
Member

Posts: 63
Location: bristol,UK
Joined: 23.03.07
Posted on May 26 2009 06:30
Alpha 4100, 4 CPU, OVMS 8.3

Thanks for the pointers. I think I’m starting to ‘get a handle’ on the subject of parallel processing threads and OVMS. The programming concepts manual seems a good starting point and has lots! of info. and some program examples. Plus, the ideas presented by the OpenMP video – as far as I watched it – seemed straightforward. The crucial concept seems to be the ‘Kernel thread’ – prior to which the ‘program context’ (hope I’m getting the terms right) could only relate to a single CPU.

“…, only one of those application threads was running at any one time. If this multithreaded application was running on a multiprocessor system, the application could not make use of more than a single CPU. “

Despite other’s assurances (as Martin above), I had some concern that the system would not use all 4 CPU’s – even though they are declared active (in the light of my question as to whether I might need some special SMP or SMP extensions license). In order to run a simple test, I wrote a little Fortran Program to do some in itself pointless, yet time consuming, CPU intensive sum.

This HP forums question (if i could make the link worksmiley) gives some relevant observations:

http://forums11.itrc.hp.com/service/forums/questionanswer.do?admit=109447626+1242853521722+28353475&threadId=747879

Each program ran in its own Decterm window. I used the ‘Monitor> monitor system’ and ‘Monitor Proc/TOPCPU’ facilities to observe what happened. Monitor System increases in steps of about 100 (suggesting that each process is takng one CPU) up to the value of 400 for the (misleading?) CPU 0 display. Mon proc/topcpu also showed up to 400 (%?) CPU – so it looks like the all CPUs are being used. I tried adding another concurrent program run (total 5) – result 70 -> 80% CPU per program (that’s perhaps interesting, in respect of how the ‘work’ is shared with the CPUs). I’ll repeat the exercise, adding some calls to timing routines to check elapsed times, in order to see the effect of running single or multiple processes.

I tried to use the ‘set process/affinity’ command but got an ‘insufficient priv.’ error even though I gave the user account ALTPRI and GROUP priv, for good measure. Perhaps I needed to log out and in again.

As I try to avoid booting and powering down the machine other than when I’m ready to try something, I tend to do a lot of reading (and as it’s a hobby activity I tend to get sidetracked a little when interesting items and links, catch my eye) But I’m learning some stuff.
Jump to Forum:
Login
Username

Password



Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.
Member Poll
Are you going to OpenVMS Boot Camp 2016?

Yes

No

You must login to vote.
Shoutbox
You must login to post a message.

LouF91
April 05 2018
ah maybe they love that!

malmberg
March 24 2018
Probably. More people hang out on the comp.os.vms newsgroup.

vaxpert
March 23 2018
I have a PE42A and other Alpha system stuff for sale. I'm in So California. Any interest out there?

goodbyespy
February 27 2018
To Prohorenko. Please, visit group OpenVMS in the ok.ru

peteherrera
February 24 2018
How much does it cost to buy a complete OpenVMS hardcopy documentation set of the latest version

prohorenko
February 17 2018
Please help to obtain the license on OpenVMS

malmberg
December 12 2017
HPE only makes the most current version of OpenVMS Alpha / IA64 /VAX available to hobbyists. When I had access to the Alliance 1 program it was the same. No public downloads are allowed by HPE.

nmbonao
December 08 2017
Is anybody knows OpenVMS 8.2 version downloadable version? or CD copy? Thank you very much

aarommes
December 02 2017
Bitcoin and Blockchain enthusiasts ( plus distributed computing ) please connec / reply: http://www.openvmshobbyis
t.com/forum/viewthread.ph
p?forum_id=130&thread_id=
2991


malmberg
September 10 2017
https://sourceforge.net/p
/vms-ports/wiki/VMSInstal
lation/ For the most part just use VMS 6.1 media instead of 7.3. But why run the older release?


DoeveR
August 07 2017
Where can I find the write up on running VMS 6.1 using the simh emulator?

Bart
March 20 2017
Happy to have found my password again!

pintero
March 16 2017
peteherrera. Agreed.

peteherrera
March 04 2017
It would be nice to be able to buy the lastest hardcopy full OpenVMS docset at a very reduced price through the Hobbyist program. smiley

malmberg
February 05 2017
Decus > Connect > Encompass<Country>

Shoutbox Archive