[GRASS5] speed

Hamish hamish_nospam at yahoo.com
Fri Jun 25 04:19:50 EDT 2004

> Grass 57 is running much faster on one Mandrake 9.2
> (PentiumIII/450MHz) than on several Debian boxes (k7/>1700MHz). This
> is especially apparent when digitizing (screen refresh of background
> raster maps takes much longer). Has anybody encountered this? Any
> ideas about possible reasons/solutions? All the best.

It's probably due to DRI acceleration often not being turned on by
default in Debian's X. Probably depends on your video card/setup.

At a command prompt try typing 'glxinfo' and look for:

direct rendering: No

Try and get that to say "Yes".

see http://dri.sourceforge.net

Note this is just for displaying graphics; r.mapcalc etc. should be
running much faster on the faster machine.


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