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Diffstat (limited to 'README')
| -rw-r--r-- | README | 26 |
1 files changed, 1 insertions, 25 deletions
@@ -7,29 +7,5 @@ Purpose of the thorn: This thorn can be used to analyze CCTK variables of real or complex data type for NaN (Not-a-Number) and (on availability of finite(3)) infinite values. -It does this by registering a routine at CCTK_POSTSTEP which checks at every - NanChecker::check_every - -iteration all the variables listed in - - NaNChecker::check_vars - -and - in case a NaN was found - performs an action as specified in - - NaNChecker::action_if_found - -Currently these actions can be to - - * just print a level 1 warning message telling you where NaNs were found - and how many (for grid array variables). - For grid arrays it will also print level 2 warnings with the array index - (in fortran order) for all NaN elements. You can limit the number of - such warnings by setting the 'NanChecker::report_max' parameter. - - * also set the CCTK termination flag so that Cactus will stop the evolution - loop and gracefully terminate at the next time possible (giving you the - choice of outputting the data from the last evolution timestep), - - * print the warning message(s) and immediately terminate Cactus - by a call to CCTK_Abort() +For details see the NaNChecker section in the Cactus ThornGuide. |