[ET Trac] [Einstein Toolkit] #434: Keep track of masked-out volume in CarpetMask

[Einstein Toolkit]

#434: Keep track of masked-out volume in CarpetMask
--------------------------+-------------------------------------------------
  Reporter:  eschnett     |       Owner:  eschnett
      Type:  enhancement  |      Status:  review  
  Priority:  minor        |   Milestone:          
 Component:  Carpet       |     Version:          
Resolution:               |    Keywords:          
--------------------------+-------------------------------------------------

Comment (by rhaas):

 I tried with the attached parfile (2 processors). The mask patch does not
 seem to fix the issue. My (completely ecidence less) suspicion would be
 that the issue are the outer boundaries (which are included by the
 reduction operation in CarpetReduce) and the ghost zones (which end up
 having weight 1 but are ignored by the reduction since it skips
 cctk_nghostzones points [at least did so in the git version where I looked
 at it last]). I get:
 {{{
 INFO (CarpetReduce): Finalise the weight on level 0
 INFO (CarpetReduce): Testing weight
 INFO (CarpetReduce): Reduction weight sum: 2009.5
 INFO (CarpetReduce): Volume of map #0: 2156
 INFO (CarpetReduce): Simulation domain volume:  1963
 INFO (CarpetReduce): Additional excised volume: 193
 }}}
 and a warning:
 {{{
 WARNING level 1 in thorn CarpetReduce processor 0 host
 horizon.tapir.caltech.edu
   (line 127 of
 /home/rhaas/ET/arrangements/Carpet/CarpetReduce/src/mask_test.c):
   -> Simulation domain volume and reduction weight sum differ
 }}}
 The sum of "Simulation domain volume" and "Additional excised volume" is
 "Volume of map #0".

-- 
Ticket URL: <https://trac.einsteintoolkit.org/ticket/434#comment:4>
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