[GRASS-dev] [GRASS GIS] #1421: scalability of r.terraflow

GRASS GIS trac at osgeo.org
Fri Mar 28 21:23:29 PDT 2014


#1421: scalability of r.terraflow
--------------------------------------+-------------------------------------
 Reporter:  dnewcomb                  |       Owner:  grass-dev@…              
     Type:  enhancement               |      Status:  new                      
 Priority:  normal                    |   Milestone:  7.0.0                    
Component:  Raster                    |     Version:  svn-develbranch6         
 Keywords:  r.terraflow, large grids  |    Platform:  Linux                    
      Cpu:  x86-64                    |  
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Comment(by dnewcomb):

 Replying to [comment:7 hamish]:
 > G_message %ld changes applied in trunk with r59505, and devbr6 with
 r59507.
 >
 > I'd note a few lines above this a cast to `(long long)` is also used.
 >
 >
 > Hamish
 Restarted large grid run with 59507 and edited 3dscan.h and types.h
 Now reads:

 COMPUTING FLOW DIRECTIONS
 classifying nodata (inner & boundary)
 total elements=6783000000, nodata elements=3291487486
 largest temporary files:
 FILL: 454.84G (488376000000) [6783000000 elements, 72B each]
 FLOW: 312.17G (335185201344) [3491512514 elements, 96B each]
 Will need at least 909.67G (976752000000) space available in /data1

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Ticket URL: <https://trac.osgeo.org/grass/ticket/1421#comment:10>
GRASS GIS <http://grass.osgeo.org>



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