[chimerax-users] Change the directory for data fetched from databases

[Guillaume Gaullier]

Hi Tom,

This is the use case I had in mind indeed. Model files are small enough that duplication doesn’t matter, but a shared cache for maps could be convenient. I was simply asking in case there was a supported way to achieve this that I had missed in the documentation, but I can absolutely live with the current default.

Thank you for your answer.
Cheers,

Guillaume


On 16 Dec 2021, at 23:50, Tom Goddard <goddard at sonic.net<mailto:goddard at sonic.net>> wrote:

Hi Guillaume,

 There is no setting to change the location where ChimeraX caches fetched files.  It is always

~/Downloads/ChimeraX

On a multi-user workstation is the idea that every person would change the ChimeraX setting to point to a common cache directory?  Will people cooperate with that?  Each person of course has their own ChimeraX settings.  Everyone will also need write access to that directory.  There are no site-wide settings in ChimeraX.

You could modify the ChimeraX application file, a file in the distribution (here's the path for Linux)

chimerax/lib/python3.9/site-packages/chimerax/core/fetch.py

making

_cache_dirs = ['/usr/local/chimerax_fetch']

near the top would I think change to use that directory.  Of course each time you install a new ChimeraX it would need such a change, and if individual users install their own ChimeraX version it will use ~/Downloads/ChimeraX.

Tom


On Dec 16, 2021, at 2:08 AM, Guillaume Gaullier via ChimeraX-users <chimerax-users at cgl.ucsf.edu<mailto:chimerax-users at cgl.ucsf.edu>> wrote:

Hello,

The documentation for the open command says "Web-fetched data are stored locally in ~/Downloads/ChimeraX/ (where ~ indicates a user's home directory)". Is there a way to change this directory? I couldn’t find one in the settings window, but maybe a command could do that? (in that case I would simply need to add this command to the startup commands).

The use case I have in mind is to share the ChimeraX cache between all accounts on a multi-user workstation (so, relocate the cache at some place like /data/ChimeraX).

Thank you,

Guillaume









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