POV-Ray : Newsgroups : povray.general : State preservation for catastrophic failure ... (like black-out) : Re: State preservation for catastrophic failure ... (like black-out) Server Time
29 Jul 2024 10:25:39 EDT (-0400)
  Re: State preservation for catastrophic failure ... (like black-out)  
From: Marvin
Date: 18 Nov 2011 00:50:22
Message: <web.4ec5f108ccaca39fdb2910cf0@news.povray.org>
Darren New <dne### [at] sanrrcom> wrote:
> On 11/17/2011 12:53, Marvin wrote:
> > Still, it will require a great deal of work to revamp smart client grc-client to
> > continue rendering where it left off.
>
> It does not naively seem like a lot of work to figure this out. Your jobs
> are either not started yet, started on a particular client, or finished and
> reported back to the master. The only time recovery of a client or master is
> difficult is the middle case, where part of the rendering is finished. In
> that case, when the client recovers, you get the data off the disk and start
> rendering again with a -C option, or you copy the partially-complete files
> to a new machine and fire up povray there with a -C.
>
> What exactly do you think are the problems with failed clients? Do you have
> individual frames spread over multiple clients, or individual clients
> rendering multiple frames in parallel, or something like that?

Hi, Darren,

Problem is in the implementation. The method you propose is obvious and logical.
The problem is that I implemented rendering in TEMP dir of Linux and those do
not survive reboots. But this is only a minor issue, "the weight is in the
mind", said Zen.

NOTE: -C option actually clears recovery data, +C restarts after abrupt stop.

See: http://www.povray.org/documentation/view/3.6.1/217/

However, I need to test thoroughly before continuing, as this is a new feature.
I will test it on abrupt shutdown and blackout.

iJC
MT


Post a reply to this message

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.