Hi all,

I was indeed running CARET on the HD4000. Updating drivers did not seem to
fix the slowdown problem. After switching GPUs to an NVIDIA card, CARET ran
just fine! Thank you for all the help :)

On Fri, Aug 9, 2013 at 7:58 AM, Donna Dierker <[email protected]>wrote:

> There have been some off-list messages on this thread, and I wanted to
> share this:
>
> Tim Coalson wrote:
> > ... it seems that the previous generation on-CPU graphics didn't have
> this problem.  The newer generation having this problem with the same code
> seems like the driver might be the culprit - ensure you have the latest
> graphics drivers.  If it still occurs, perhaps we could contact intel and
> let them know of the problem.  They might just brush it off (caret5 is
> using an old version of openGL), but you never know.
>
> Jon Schindler wrote:
> > As Tim says, one factor is that they are underpowered compared to
> discrete graphics cards.  However, another factor is that since Intel's
> attempt to make a GPU is relatively recent, and they aren't trying to
> support high-end legacy applications (professional OpenGL applications),
> they may not have optimized the version of OpenGL that we use, which is
> fairly outdated, and used primarily in expensive legacy OpenGL
> applications.  Most consumer OpenGL apps, which are Intel's target market,
> tend not to require extremely fast OpenGL 2.x support (as they've moved on
> to OpenGL 3.x+), so we may be witnessing some slowdowns due to the version
> of OpenGL we are using.
>
>
> Make sure your graphics card driver is up-to-date.  It would be nice to
> know whether that helps any of the three we know experiencing this problem.
>  (Also, whether anyone is seeing it on a platform other than windows.)
>
>
> On Aug 7, 2013, at 11:45 AM, Donna Dierker <[email protected]>
> wrote:
>
> > I have emailed nicky, the first one who reported this issue, to see what
> graphics card she was using when she ran into this.
> >
> > Hopefully Steven is still tuned into this thread.
> >
> > This information is most helpful, Wouter.  Thank you much for posting
> these details.
> >
> >
> > On Aug 6, 2013, at 12:51 PM, "Schellekens, W." <
> [email protected]> wrote:
> >
> >> Hi,
> >>
> >> I'd like to contribute to this topic, although I'm not sure of what use
> it'll be...
> >>
> >> I'm experiencing the slowdown as well on a new windows 7 64bit machine.
> But I may have found a reason why.
> >>
> >> I used to be able to use Caret v5.65 on my older windows 7 64bit laptop
> just fine. The main difference between that older laptop and my current one
> is the processor. The older one was a 2nd gen intel i3, and the current one
> is a 3th gen intel i7. Except for having higher clock rate now, something
> else has changed as well: the onboard graphics processor from HD3000 to
> HD4000. In addition to the onboard intel graphics chip, I also have a
> low-end Nvidia Geforce 610M graphics chip, which performance is quite
> similar to the HD4000.
> >>
> >> Now, I still have the exact copy of Caret v5.65 I installed on the 2nd
> gen i3, and installed that one on my current system. When I'm using the
> HD4000 graphics chip, Caret runs horrendously slow (editing voxels, node
> IDs, right mouse button, etc.). However, when I change to the Nvidia chip,
> Caret runs fine. My best guess is, that Caret and the HD4000 chip don't
> play nice together.
> >>
> >> It would be interesting to see, if the other guys that experience
> slowdowns are using the HD4000 chip as well.
> >> Hopefully, this has helped someone.
> >> Cheers,
> >>
> >> Wouter Schellekens
> >>
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> >>
> >>
> >> ________________________________________
> >> Van: [email protected] [
> [email protected]] namens Donna Dierker [
> [email protected]]
> >> Verzonden: maandag 5 augustus 2013 21:00
> >> Aan: Caret, SureFit, and SuMS software users
> >> Onderwerp: Re: [caret-users] Voxel editing slowdown?
> >>
> >> We can rule out volume size as an issue, then.
> >>
> >> Both complaints along these lines came from Windows users.
> >>
> >> The only other idea that comes to mind (okay, delivered by another
> user) is trying the neurodebian virtual machine.  See if voxel editing is
> more responsive that way.
> >>
> >> Apart from editing in another software package like MRIcron, and then
> prepare for flattening using the steps near the bottom of this page:
> >>
> >> http://brainvis.wustl.edu/help/peak_tweaking/
> >>
> >> I wish I knew of a quick fix.
> >>
> >>
> >> On Aug 5, 2013, at 12:42 PM, Steven Lu <[email protected]>
> wrote:
> >>
> >>> Thank you for the reply!
> >>>
> >>> I am indeed running Windows (7 Professional 64-bit). I get similar
> delays when opening the Identify Window after clicking anywhere on my
> image. The dimensions of my volume are 78x182x128 (right hemisphere), but I
> get the same slowdown with the Identify Window regardless of the volume
> used (likely the same effect with voxel editing.
> >>>
> >>> Best,
> >>> Steven
> >>>
> >>> On Mon, Aug 5, 2013 at 8:02 AM, Donna Dierker <
> [email protected]> wrote:
> >>> See this thread:
> >>>
> >>>
> http://www.mail-archive.com/[email protected]/msg02842.html
> >>>
> >>> Are you running Caret on Windows, too?
> >>>
> >>> Out of curiosity, what are the dimensions of the segmentation volume
> you are editing?
> >>>
> >>>
> >>> On Aug 4, 2013, at 8:45 PM, Steven Lu <[email protected]>
> wrote:
> >>>
> >>>> Hi, I've been working on segmentation and the voxel editing tools
> (mainly Turn Voxels On and Turn Voxels Off) show very delayed responses
> (about 2 seconds after clicking). I'm wondering if anybody else has
> experienced this and, if so, what can be done about it?
> >>>> _______________________________________________
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> >>>
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