How to save case and data files of Fluent calculations which are being controlled by journal files (checkpointing)


Checkpointing is a little-known feature in Fluent which permits the user to force Fluent to save case and data files to disk when the calculation
is being controlled by a journal file and/or is running in the background on the user's machine. Under such circumstances, the user can not
(or doesn't want to) interrupt the calculation which is in progress.
There are two checkpointing modes:

* check-fluent - After the current iteration is complete, Fluent will save the current solution to case and data files, then continue running.
* exit-fluent - After the current iteration is complete, Fluent will save the current solution to case and data files, then exit.

To do this on a UNIX machine:

* Create a text file with either the filename "check-fluent" or "exit-fluent" and place this file in the directory /tmp. The contents of the file
are irrelevant - Fluent will only check to see if a file with one of the above names exists in the /tmp directory.

To do this on a PC/Windows machine:

* Create a text file with either the filename "check-fluent.txt" or "exit-fluent.txt" and place this file in the directory C:TEMP. The contents of the file
are irrelevant - Fluent will only check to see if a file with one of the above names exists in the C:TEMP directory.

Notes:

* DOS requires the .txt extension on the filename.
* Once a check-fluent or exit-fluent is performed, Fluent will automatically remove the file from /tmp or C:TEMP. Thus, if you wish to perform another
check-fluent, simply create a new file.
* Fluent will append the current iteration counter to the filename so that unique filenames will be created if multiple instances of check-fluent are performed.





Show Form
No comments yet. Be the first to add a comment!