[Paraview] [EXT] Re: Linux memory problems exclusive to Paraview

[Axel Kittenberger]

See: http://www.linuxatemyram.com/

On Thu, Jan 21, 2016 at 8:09 PM, Dennis Conklin <dennis_conklin at goodyear.com
> wrote:

> David,
>
>
>
> I have attached the summary from top – it indicates that of my 32GB, 5.4
> GB is “free”.   Note that nothing is actually “using” that much memory.
>  If I run Paraview with my huge model, then it will be very slow and
> complain about not having memory.   If I run other programs to process this
> huge model, they will work just fine and never notice that they don’t have
> memory.   It appears that they can access the “used” memory while paraview
> cannot use it.
>
>
>
> The distribution info is also attached.
>
>
>
> We are not yet compiling Paraview here – we are using the v4.4 Linux
> 64-bit executables DL’ed from the website, so I’m not sure I can change any
> flags for memory management.
>
>
>
> Thanks for taking a look at this.
>
>
>
> Dennis
>
>
>
> *From:* David E DeMarle [mailto:dave.demarle at kitware.com]
> *Sent:* Thursday, January 21, 2016 11:10 AM
> *To:* Dennis Conklin <dennis_conklin at goodyear.com>
> *Cc:* Paraview (paraview at paraview.org) <paraview at paraview.org>
> *Subject:* [EXT] Re: [Paraview] Linux memory problems exclusive to
> Paraview
>
>
>
> Dennis,
>
>
>
> Couple things please.
>
>
>
> 1) What distribution and version?
>
> 2) Can you send use the top couple of lines of top so we know specifically
> what you are seeing (top output can vary)
>
> 3) Second - This is a shot in the dark and you'll have to compile preview
> to test it. In vtkDataArrayTemplate.cxx - ensure that dontUseRealloc is
> true. This changes part of the way we manage memory, so it might come into
> play.
>
>
>
> thanks
>
>
>
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>
>
>
> On Tue, Jan 19, 2016 at 1:23 PM, Dennis Conklin <
> dennis_conklin at goodyear.com> wrote:
>
> All,
>
>
>
> I will never be mistaken for a Linux sys admin, so let me try to tell you
> what is happening in a hopefully understandable way.
>
>
>
> We run Paraview standalone on our workstations – no  remote server, etc.
> Just running the executables DL’ed from the website.
>
>
>
> We constantly have an issue with Paraview not having enough memory to
> behave properly.
>
> If I run TOP at the command line, I might see that nothing is using more
> than 2% of memory, but in the header it says I have 32GB of ram and 28GB is
> “used” in the terminology of TOP.   This will mean that Paraview will have
> very little memory available to it (confirmed using Memory inspector) and
> it will be very slow!     However, other programs, including other
> post-processors seem to be able to access this “used” memory and perform
> much better.    What is it about Paraview which makes it unable to utilize
> this “used” but apparently available memory, while other programs can?
>
>
>
> If more info is needed, can someone help me understand how to get the
> needed info.   After discussing this several times with the sys admins,
> they just want me to go away because apparently only Paraview has this
> issue.
>
>
>
> Thanks for any help
>
>
>
> Dennis
>
>
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