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Diffstat (limited to 'doc/documentation.tex')
| -rw-r--r-- | doc/documentation.tex | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/doc/documentation.tex b/doc/documentation.tex index 3ce359f..bbf1dad 100644 --- a/doc/documentation.tex +++ b/doc/documentation.tex @@ -423,6 +423,8 @@ parameters. The most important ones are: method used to recover from the recovery file. \item {\tt IO::recover\_dir}\\ directory where the recovery file is located + \item {\tt IO::truncate\_files\_after\_recovering}\\ + whether or not to truncate already existing output files after recovering \end{itemize} To checkpoint your simulation, you need to enable checkpointing by setting @@ -463,6 +465,15 @@ file(s) to create a single file with unchunked data. Note that Cactus checkpoint files are platform independent so you can restart from your checkpoint file on a different machine/architecture. +By default, existing output files will be appended to rather than truncated after +successful recovery. If you don't want this, you can force I/O methods to +always truncate existing output files. Thorn {\bf IOUtil} provides an aliased +function for other I/O thorns to call: +\begin{verbatim} + CCTK_INT FUNCTION IO_TruncateOutputFiles (CCTK_POINTER_TO_CONST IN cctkGH) +\end{verbatim} +This function simply returns 1 or 0 if output files should or should not be truncated. + \vskip .5cm \noindent{\bf WARNING:} |