Add switchable C RK4 kernel and build toggle

(cherry picked from commit b91cfff301)
2026-02-28 21:12:19 +08:00
parent 71f6eb7b44
commit b185f84cce
3 changed files with 197 additions and 28 deletions
--- a/AMSS_NCKU_source/makefile.inc
+++ b/AMSS_NCKU_source/makefile.inc
@@ -33,6 +33,12 @@ endif
 ##   1 (default) : use C++ rewrite of bssn_rhs and helper kernels (faster)
 ##   0           : fall back to original Fortran kernels
 USE_CXX_KERNELS ?= 1
+
+## RK4 kernel implementation switch
+##   1 (default) : use C/C++ rewrite of rungekutta4_rout (for optimization experiments)
+##   0           : use original Fortran rungekutta4_rout.o
+USE_CXX_RK4 ?= 1
+
 f90          = ifx
 f77          = ifx
 CXX          = icpx