There are two different ways to restart your job.

For example:  Your model named TEST_0000.rad for Starter and TEST_0001.rad for Engine.

Then create TEST_0001.ctl in the current folder. In this file, assign the following keyword:

/STOP

Then, RADIOSS will read this control file, will stop the job and also writes a restart file.

Now to continue the job, create the second Engine file TEST_0002.rad. Simply copy the first Engine file and that is all. Launch this second Engine file and then RADIOSS will continue the job after your stopping point.

For example: Your model named TEST_0000.rad for Starter and TEST_0001.rad for Engine.

First, in the Engine file TEST_0001.rad, /RFILE/n will need to be defined. For example, if you want to create a restart file for each 100 cycles, then do the following:

/RFILE/100

100 1 1

Then in your current folder, you may have the following restart files, depending on your model:

TEST_0001_0001_I.rst

TEST_0001_0001_J.rst

TEST_0001_0001_K.rst

TEST_0001_0001_L.rst

TEST_0001_0001_M.rst

TEST_0001_0001_N.rst

…

Note: The file name always begins with Restart Letter=I. Here it begins with TEST_0001_0001_I.rst.

Now to continue your job, the second Engine file TEST_0002.rad needs to be created. In this Engine file, assign the keyword /RUN/Run Name/Run Number/Restart Letter.

For example:

/RUN/TEST_0001_0001_K/3/K

100

Now launch the second Engine file, RADIOSS will continue the job after the point of TEST_0001_0001_K.rst.

Note: Run Numbers are defined below:

TEST_0001_0001_I.rst   Run Number = 1

TEST_0001_0001_J.rst   Run Number = 2

TEST_0001_0001_K.rst   Run Number = 3

TEST_0001_0001_L.rst   Run Number = 4

TEST_0001_0001_M.rst   Run Number = 5

TEST_0001_0001_N.rst     Run Number = 6

…

To continue the run:

For Example:

RADIOSS could restart the calculation from the last restart file which was created by running TEST_0001.rad.

See Also:

Control File (C-File)

/RFILE/n

It is possible to do this by writing a control file in the same directory as the run data.

In case of a run number nnnn (/RUN/Runname/nnnn in the RADIOSS Engine input file), you have to create a file called Runname_nnnn.ctl and write the following line in it:

/STOP

RADIOSS Engine ends and a RESTART file is written.

The others options available with control files are described in the Control File (C-File) section.

Check that the RESTART file Runname_0000_0000.rst (written by Starter) that appears in the directory where RADIOSS Engine has been run.

You have to write the option /RFILE/n in the RADIOSS Engine input file Runname_run#.rad:

n refers to the number of different RESTART files that will be kept. The n RESTART files will get different names Runname_0001_0000_[C].rst1 with an extension using a letter: for example, the first RESTART file will be called Runname_0001_0000_I.rst; the second RESTART file will be called Runname_0001_0000_J.rst and so on.  The n+1th file will also be called Runname_0001_0000_I.rst and will overwrite the first file. This sequence is repeated.

It is possible to write up to 18 different RESTART files within the same run.

In order to restart from a file in the next run, you will have to specify in the Runname_run#.rad input file the next run, the letter defining the RESTART file into option /RUN.

For instance, for restarting with file Runname_0001_0000_J.rst:

/RUN/Runname/2/J

Reference