GRHydro: Added parameter to perform sync on conserved quantities only.

Primitives are only sync'ed after regridding to get initial guesses.
Schedule Primitive boundary call in PostRegridInitial if sync_only_coserved == yes.

Fixed issue with the sync call in CCTK_EVOL after MoL_Evolution when sync_conserved_only==yes:
Conserved vars must be synced here as well, otherwise conserved vars are reset to atmospshere whereas
primitives are not! This is wrong.

Patches by Christian Reisswig.


git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinEvolve/GRHydro/trunk@340 c83d129a-5a75-4d5a-9c4d-ed3a5855bf45

1 files changed, 9 insertions, 0 deletions

diff --git a/param.ccl b/param.ccl
index c22b6c1..51ee2c3 100644
--- a/param.ccl
+++ b/param.ccl
@@ -598,3 +598,12 @@ int GRHydro_c2p_warn_from_reflevel "Start warning on given refinement level and
 boolean disable_sync_and_tmunu_after_MoL "Do not sync/prolongate and reset Tmunu after MoL integration is done" STEERABLE=ALWAYS
 {
 } "no"
+
+
+# This can improve the performance on many cores, but may be dangerous 
+# (it seems to work in simple testcases, but morde complicated settings may fail)
+# If you encounter strange behavior, switch this OFF
+BOOLEAN sync_conserved_only "Only sync evolved conserved quantities during evolution."
+{
+} no
+