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I'm currently working on a way to use the many machines at work to
render over automatically, with out having to setup things like pvm....
So if written a perl script to control some clients.
It uses ssh for the transport method.
Tar+gzip to have an archive to send over to the clients, and to get back
the files/ images
screen - to monitor the clients.
To do thou:
allow clients to go away and come back.
if a client is given a job, and it stops/ never comes back, to
recover
and re-do that job
allow the rendeing to stop half way and continue from there.
So is this something that people are interested in???
TO give you an idea I did an anim last night 320x240 x140 frames with aa
over 4 machines and it took 88 mins... The four pcs are
PII - 400
PII - 333
PIII - 650
Pentium - 200
Cheers
Fran
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Fran Firman wrote:
>
> I'm currently working on a way to use the many machines at work to
> render over automatically, with out having to setup things like pvm....
>
[Snip.]
> So is this something that people are interested in???
>
[Cut.]
>
> Cheers
> Fran
Even though I'm a very green newbie when it comes to Povray, I have
been working and thinking of doing something similar for some time, as
animation is my main interest.
So far I have made a small shell script, that, given a POV file for a
single image, let the rendering happen in two different processes on a
single machine. With SMP hardware this speeds up rendering times by just
about a factor of two.
If at some point in time I get *really* serious, then I am thinking of
making a small cluster of diskless SMP machines on a dedicated network.
The needed control software will not be anything spectacular, just rsh,
NFS and lockfiles for the basic structure, and possibly Perl to split up
and control the workflow.
So yes, I at least would be interested in seeing what you have made.
Regards
Frank.
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> Even though I'm a very green newbie when it comes to Povray, I have
> been working and thinking of doing something similar for some time, as
> animation is my main interest.
Me too.. I currently have only one machine, but I could easily write a cgi
script that could do everything that Povray does (except the pre/post render
exections ;)... that would be available for anyone... the program would run
under linux only (since I use the command system() that might not work properly
on other machines...)
What I was actually wondering is that I had the opportunity to get a few 386 and
486 for almost free...
What exactly are their speeds under linux compared to a Celeron 433?
And btw, can Linux (Redhat 6.1 for example) be installed on those slow PCs?
Thanks,
Simon
--
+-------------------------+----------------------------------+
| Simon Lemieux | Website : http://www.666Mhz.net |
| Email : Sin### [at] 666Mhz net | POV-Ray, OpenGL, C++ and more... |
+-------------------------+----------------------------------+
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On Fri, 20 Oct 2000 17:21:36 -0400 Simon Lemieux wrote:
>What I was actually wondering is that I had the opportunity to get a few 386 and
>486 for almost free...
>
>What exactly are their speeds under linux compared to a Celeron 433?
If you're planning on running POV-Ray on these machines, avoid the 386
and 486SX processors - stick with 486DX boxes since they come with
onboard fpu's. Rendering images on a pre-fpu 386 redefines the word
'slow' <s>.
--
Alan - ako### [at] povrayorg - a k o n g <at> p o v r a y <dot> o r g
http://www.povray.org - Home of the Persistence of Vision Ray Tracer
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Simon Lemieux wrote:
>
> > Even though I'm a very green newbie when it comes to Povray, I have
> > been working and thinking of doing something similar for some time, as
> > animation is my main interest.
>
> Me too.. I currently have only one machine, but I could easily write a cgi
> script that could do everything that Povray does (except the pre/post render
> exections ;)... that would be available for anyone... the program would run
> under linux only (since I use the command system() that might not work properly
> on other machines...)
When I got my dual box, I started like this. However:
- Handling dynamic load balancing correctly is fairly hard for still
images (did I say impossible ?)
- Radiosity will not work
- Error handling is very funny
- ...
Pvmpov does the first very well, and the other ones have been improved a
lot since a few months.
Now, to get ideas about what to improve, could you tell me what the
problem is with "setting up things like pvm" ?
--
__ __ __ __ _
| | / \ / / |_ / |/
\/\/ \__/ /_ /_ |__ \_ |\
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> If you're planning on running POV-Ray on these machines, avoid the 386
> and 486SX processors - stick with 486DX boxes since they come with
> onboard fpu's. Rendering images on a pre-fpu 386 redefines the word
> 'slow' <s>.
Noted! Thanks.. but is it worth it?
--
+-------------------------+----------------------------------+
| Simon Lemieux | Website : http://www.666Mhz.net |
| Email : Sin### [at] 666Mhznet | POV-Ray, OpenGL, C++ and more... |
+-------------------------+----------------------------------+
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I have placed the archive in the povray.binaries.utilities group.
The archive is a HUGH size of about 3.5k.
8-)
enjoy.
Fran.
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On Sat, 21 Oct 2000 13:59:05 -0400 Simon Lemieux wrote:
>Noted! Thanks.. but is it worth it?
Probably only if you can obtain them for next to nothing, as you
indicated. You'd need quite a few 486's to match the performance of a
single currently sold pc.
--
Alan - ako### [at] povrayorg - a k o n g <at> p o v r a y <dot> o r g
http://www.povray.org - Home of the Persistence of Vision Ray Tracer
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Simon Lemieux wrote:
>
> What I was actually wondering is that I had the opportunity to get a few 386 and
> 486 for almost free...
>
> What exactly are their speeds under linux compared to a Celeron 433?
Very much slower. They have clocks around 15 times slower than yours.
But they also may not have an fpu, which will divide the rendering speed
by something like 20 or more. And their cpu don't do the optimizations a
Pentium II-class computer can do. Divide the performance again. Besides,
they probably don't have a lot of memory (expect a mean 4 MB) which will
quickly be filled by a complex scene. And Linux barely works with 4 MB, and
can work with 8 MB, if set up carefully.
You can still do a lot of things with such machines, but I don't think
rendering is one of them, unless you get several dozens of such PCs and
have the space at home to set-up such a rendering farm (and watch for
the electricity bill!).
> And btw, can Linux (Redhat 6.1 for example) be installed on those slow PCs?
Yes, no problem. Err, I mean it works. You'll need RAM and disk space, though.
More than there used to be at that time by default. I have my old faithful
1993 computer. A 486 at 66 MHz, with 28 MB RAM (it had 4 when I bought it) and
a 2.5 GB HD (bought very recently -- it was a bargain -- used to be 163 MB).
But I don't think many recent Linux distros can be installed, mostly because
most of them use graphical installation and they won't start on such an old PC.
I use Slackware, and it works well (be warned, it's not the easiest distro to use).
Ccl: unless you're adventurous and willing to experiment, I think you'd best avoid
this, because you risk to spend a lot of time making all this work, for a rather
deceiptful result. But if you can get one, it can be funny. The above-mentionned
486 was my Internet station for six month (jan2000 to jun2000), and it worked well.
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> You can still do a lot of things with such machines, but I don't think
> rendering is one of them, unless you get several dozens of such PCs and
> have the space at home to set-up such a rendering farm (and watch for
> the electricity bill!).
Yes, that's what I thought... I'll be looking for old used Pentiums instead!
Thanks,
Simon
--
+-------------------------+----------------------------------+
| Simon Lemieux | Website : http://www.666Mhz.net |
| Email : Sin### [at] 666Mhznet | POV-Ray, OpenGL, C++ and more... |
+-------------------------+----------------------------------+
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