[Chimera-users] File Operations *veery* slow on Win 7

Markus Heller mheller at cdrd.ca
Mon Aug 12 13:25:48 PDT 2013

Eric, Tom,

Eric's suggestion seems to work after a quick test drive :)


From: Eric Pettersen [mailto:pett at cgl.ucsf.edu]
Sent: Monday, August 12, 2013 1:22 PM
To: Markus Heller
Cc: chimera-users at cgl.ucsf.edu
Subject: Re: [Chimera-users] File Operations *veery* slow on Win 7

Hi Markus/Tom,
            It can't actually be hanging, since that would produce an error rather than just a slow response, but Tom is certainly on the right track since if any of those directories is slow to respond/list, then the file browser will be slow to show up.
            What you can try is the same thing you would try if the directory were hanging:  restrict the browser to showing just its current directory and that directory's parent by changing your preferences like so:

1) Favorites->Preferences
2) Change the preferences category to General (if it isn't there already)
3) Change "Use short open/save browser" to "true"
4) See if that helps
5) If it does help, click "Save" at the bottom of the preferences dialog to make the change permanent


                        Eric Pettersen
                        UCSF Computer Graphics Lab
On Aug 9, 2013, at 10:23 PM, Tom Goddard <goddard at sonic.net<mailto:goddard at sonic.net>> wrote:

Hi Markus,

The problem with the Save dialogs seems likely to be because Chimera is trying to show its own custom file browser that shows the files in all directories from the root directory down to the directory its going to offer to put the new file in.  Probably one of those directories like the top level one has a disk mounted that is not responding, and Chimera hangs.  Eric Pettersen wrote this Save file dialog code and I think has encountered this before and may have advice for you.  I don't know much about Windows.  Do you have more than one disk drive on this computer?

The weird black screen when Chimera starts, I believe has something to do with the fact that Chimera needs a 3d OpenGL rendering context, and for some lame reason on Windows it has to switch the entire display mode being used on the desktop to provide that.  Again I know too little about Windows but Greg Couch in our lab could give you a detailed answer as to why that happens.


On Aug 9, 2013, at 2:30 PM, Markus Heller wrote:


I'm running the latest release of Chimera (1.8 build 38824), but I've observed this with the 2 previous releases as well.  Computer is a core i7 with 32 GB RAM and an Nvidia Quadro FX 1700 with 512 MB DDR2 memory and latest driver.  OS is Windoze 7 64 bit.

Pretty much every time I click File --> Save mol2 or Save pdb or Save Session As, I get the blue spinning wheel of death and (not responding) in the window title bar.  It's not a deal breaker, but it's pretty annoying.  Anybody else seeing this?

Also, when I start Chimera, the screen goes black for a second and all window title bars change to standard blue.  When I exit Chimera, the process reverses.  Are these observations related?

And how can I provide more information in addition to my vague description?

Thanks and Cheers

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