[Radiance-general] Resolution Mismatch in Rpict.

Fri, 28 Nov 2003 11:55:48 -0000

Many thanks for all of the replies, 

The 'top' command is indeed top, never knew that existed and it proved to be
a great help in solving this problem.  The limits for data and infact most
settings were already 'unlimited' when we checked so we were left with
watching 'top' to see what happened.

The machines we were running on generally had 64MB of RAM with 128MB swap
partitions, we added a couple of machines that had 128MB RAM with 1.2GB
swap, anyway when we ran rpeice on the higher spec machines with 'top'
running we saw that rpict peaked at 640MB of RAM use and rpiece / rpict
completed without failing.  When we ran rpiece on the lower spec machines
the error 'mismatch resolution etc' occurred exactly as we ran out of RAM
and SWAP space.

It is interesting to note that a ~300MB .oct requires 640MB or RAM and SWAP
space.

Once again thanks for the help, it's good to have found out more about Linux
as well as Radiance.  The only problem we have now is rebuilding our cluster
machines to increase the SWAP space.

Best Regards

Andrew

-----Original Message-----
From: Peter Apian-Bennewitz [mailto:[email protected]]
Sent: 27 November 2003 23:37
To: [email protected]
Subject: Re: [Radiance-general] Resolution Mismatch in Rpict.

Greg Ward wrote:

> Hi Andrew,
>
> From your error message, it looks like rpict is dying before it ever 
> gets going.  The partial error message "rpict: signal - " is 
> particularly telling.  Rpict apparently dies before it even finishes 
> its error message!  The "rpiece: resolution mismatch from rpict" is 
> produced by rpiece after rpict dies - it's not part of the same message.
>
> My guess is that rpict is using more memory than it's allowed on your 
> node(s).  In csh/tcsh, the command:
>
>     % limit
>
> Tells you your current resource limit settings for individual processes.

ulimit -a
for bash users

you may want to run 'top' (hit m to get into memory mode) to see what 
happens with rpict.
xosview is another nice way to check what your systems are doing. You 
should see swap space or memory diminishing before rpict dies, if that 
is the scenario.

-Peter

-- 
 pab-opto, Freiburg, Germany, www.pab-opto.de

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