POV-Ray : Newsgroups : povray.unofficial.patches : Problem with PVMegaPOV Server Time
1 Sep 2024 12:17:08 EDT (-0400)
  Problem with PVMegaPOV (Message 1 to 3 of 3)  
From: Disnel
Subject: Problem with PVMegaPOV
Date: 16 Mar 2001 05:41:50
Message: <3AB1FE34.5030004@hlavacek-partner.cz>
When I render large scene (approx 350MB in memory) with PVMMegaPOV on 
one machine with two processors all is OK, but when I try to run it on 
second machine through network, pvmd at the second machine takes another 
300MB of RAM. After some time it falls down to reasonable size, but it 
is strange. It is some bug in PVMegaPOV, or in PVM, or it has some reason?

Regards

Disnel


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From: Francois Dispot
Subject: Re: Problem with PVMegaPOV
Date: 16 Mar 2001 16:34:31
Message: <3AB286E6.5E1CF106@club-internet.fr>
Disnel wrote:
> 
> When I render large scene (approx 350MB in memory) with PVMMegaPOV on
> one machine with two processors all is OK, but when I try to run it on
> second machine through network, pvmd at the second machine takes another
> 300MB of RAM. After some time it falls down to reasonable size, but it
> is strange. It is some bug in PVMegaPOV, or in PVM, or it has some reason?

pvmd itself shouldn't use that much memory. It is just a daemon handling
and buffering messages. It could start increasing its buffers if a huge
number of messages cannot be transmitted to their respective targets.

Could you please give me some more info:
- platform, os, version of pvm (mine is 3.4.2)
- did you use radiosity?
- when does pvmd eat memory (while its clients are
parsing/pre-rendering/rendering)?
- how did the render end (correctly?) and how the loads were balanced
(see the percentages achieved by each client in the stats)

This problem is unknown to me (I mostly run pmp as you usually do), and
was never reported.
-- 

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From: Disnel
Subject: Re: Problem with PVMegaPOV
Date: 19 Mar 2001 05:37:49
Message: <3AB5F1D2.8080603@hlavacek-partner.cz>
Francois Dispot wrote:

> Disnel wrote:
> 
>> When I render large scene (approx 350MB in memory) with PVMMegaPOV on
>> one machine with two processors all is OK, but when I try to run it on
>> second machine through network, pvmd at the second machine takes another
>> 300MB of RAM. After some time it falls down to reasonable size, but it
>> is strange. It is some bug in PVMegaPOV, or in PVM, or it has some reason?
> 
> 
> pvmd itself shouldn't use that much memory. It is just a daemon handling
> and buffering messages. It could start increasing its buffers if a huge
> number of messages cannot be transmitted to their respective targets.
> 
> Could you please give me some more info:
> - platform, os, version of pvm (mine is 3.4.2)

i386 (2xPIII800, 1xAMD 850), Linux (RH 6.2), PVM 3.4.3

> - did you use radiosity?

No. Tried it, but it is slower than at one procesor without PVM :(.

> - when does pvmd eat memory (while its clients are
> parsing/pre-rendering/rendering)?

During parsing. When renderings starts, pvmd falls down to reasonable size (under 1MB)

> - how did the render end (correctly?) and how the loads were balanced
> (see the percentages achieved by each client in the stats)

Render ends correctly. Loads are

           host name  [ done ] [ late ]           host name  [ done ] [ late ]
Infinity.localdomain  [11.69%] [ 0.37%]Infinity.localdomain  [ 8.62%] [ 0.00%]
               linux  [79.69%] [ 0.00%]


(Infinity is 2xPIII800, linux is 1xAMD 850, I think, that AMD is much faster for
render, this has influence of loads)


> 
> This problem is unknown to me (I mostly run pmp as you usually do), and
> was never reported.


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