[GRASS-dev] [GRASS GIS] #2750: LZ4 when writing raster rows; better than double I/O bound r.mapcalc speed

GRASS GIS trac at osgeo.org
Tue Nov 10 00:43:22 PST 2015


#2750: LZ4 when writing raster rows; better than double I/O bound r.mapcalc speed
--------------------------+---------------------------
  Reporter:  sprice       |      Owner:  grass-dev@…
      Type:  enhancement  |     Status:  new
  Priority:  normal       |  Milestone:  7.1.0
 Component:  Raster       |    Version:  svn-trunk
Resolution:               |   Keywords:  ZLIB LZ4 ZSTD
       CPU:  OSX/Intel    |   Platform:  MacOSX
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Comment (by mmetz):

 Replying to [comment:21 mmetz]:
 > Replying to [comment:20 wenzeslaus]:
 > > Replying to [comment:19 mmetz]:
 > > > I have implemented something like this recently and added support
 for LZ4 (and BZIP2) compression to my local copy of GRASS trunk.
 > > >
 > > > I am attaching a patch for trunk r66775 and an archive with new
 files to go to lib/gis
 > >

 > >
 > > I guess I'm missing something in configure because with BZIP2 it says
 "ERROR: GRASS needs to be compiled with BZIP2 for BZIP2 compression".
 >
 > You will need to hack in BZIP2 support, or make distclean, apply the
 patch "bzipsupport.patch", configure --with-bzlib, make

 ..and use the updated files in "giscompress.tar.gz"

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/2750#comment:22>
GRASS GIS <https://grass.osgeo.org>



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