add (very very minimal) support for multiprocessor operation:

if all AHs are entirely within a single processor's chunk of the grid,
then set   AHFinderDirect::processor_number = 42
(or whatever that processor's processor number is)
and things should work ok

(this is not yet properly documented :( )


git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinAnalysis/AHFinderDirect/trunk@882 f88db872-0e4f-0410-b76b-b9085cfa78c5

1 files changed, 7 insertions, 0 deletions

diff --git a/param.ccl b/param.ccl
index c555b6b..98f5676 100644
--- a/param.ccl
+++ b/param.ccl
@@ -30,6 +30,13 @@ private:
 # ***** overall parameters *****
 #
 
+# if we are in a multiprocessor run, AHFinderDirect will be a no-op
+# on all processors with CCTK_MyProc() != this parameter
+int processor_number "processor number on which to run"
+{
+0:* :: "this thorn is a no-op on all processors *except* this one"
+} 0
+
 boolean find_AHs_at_postinitial \
   "should we try to find apparent horizons at CCTK_POSTINITIAL?"
 {