I ran cactus with the parameter
but without setting CarpetRegrid2::radius_1 That is wrong, of course. The error message was:
WARNING level 0 in thorn CarpetRegrid2 processor 0 host mb2.local (line 93 of /Users/mb/Cactus/arrangements/Carpet/CarpetRegrid2/src/regrid.cc): -> The radius of refinement level 1 of region 1 is [4.94066e-323,4.88063e+252,5.03503e+175], which is non-negative
This error message does not seem to make sense. Could it be improved?