RESTARTW

I/O Options and Subcase Information Entry The RESTARTW entry can be used in the I/O Options section to define the control parameters for nonlinear restart.

Format

RESTARTW = n, option, option2, path

Example

RESTARTW = 1
RESTARTW = 5, NOCOV
RESTARTW = 5, NOCOV, D:\tmp
RESTARTW = 5, COVER, RMDX, D:\tmp

Definitions

Argument	Options	Description
`n`	Integer > 0 No default	Identifies the frequency of writing nonlinear restart analysis information files. Restart analysis information files (*.rnl) are written after every `n` increment(s) and after the last increment for a nonlinear subcase. 1
`option`	COVER, COVE2, NOCOV	COVER (Default) Whenever a new restart analysis information file (.rnl) is written, the previous restart analysis information file is removed, unless it was the last frame for a nonlinear subcase. COVE2 Whenever a new restart analysis information file (.rnl) is written, the previous restart analysis information file is removed, unless it was either of the last two frames for a nonlinear subcase. NOCOV Previous restart analysis information files are not removed.
`option2`	RMDX, Blank	RMDX Activates enhanced Restart functionality where, in addition to the traditional *.rnl file, a new <filename>.rmdx file is output. The new .rmdx file contains the full model information and you can define only additional data (new subcases and so on) in the RESTARTR run. In this case, the traditional .rmd restart model file is not output. Blank (Default) The traditional Restart functionality is active and the .rmdx file is not output. The traditional .rmd restart model file is output; therefore, the subsequent RESTARTR run should contain the full model plus any changes that are required.
`path`	<directory path> Default = Scratch file directory	Path to the directory where restart files are to be written. 2 Note: This argument is only supported if RESTARTW is specified above and outside the subcase.

Comments

For the traditional Restart functionality (option2 is blank): If RESTARTW entry is specified in the model, OptiStruct writes one restart model information file (*.rmd) and one or more restart analysis information files (*.rnl) to be used in a subsequent restart run. The .rnl and .rmd files are named in format <filename>_sub<i>_inc<j>.rnl and <filename>.rmd respectively, where <filename> is the filename of the input deck (prior to .fem), <i> (0<i<100000000) is the corresponding subcase ID and <j> (0<j<10000) is the corresponding increment number in the subcase.
For the enhanced Restart functionality (option2=RMDX): If RESTARTW entry is specified in the model, OptiStruct writes one enhanced new restart model information file (*.rmdx) and one or more restart analysis information files (*.rnl) to be used in a subsequent restart run. The .rnl and .rmdx files are named in format <filename>_sub<i>_inc<j>.rnl and <filename>.rmdx respectively, where <filename> is the filename of the input deck (prior to .fem), <i> (0<i<100000000) is the corresponding subcase ID and <j> (0<j<10000) is the corresponding increment number in the subcase.

In this case, the RESTARTR run should only contain the new/additional entries to be added to the model. The full model is stored in the .rmdx file and is available for use by the RESTARTR run. The BEGIN BULK and ENDDATA entries can also be defined in the RESTARTR run.
RESTARTW entry can be specified on top of subcases and/or inside subcases. If prescribed both ways, the in-subcase RESTARTW arguments overrides the out-of-subcase RESTARTW arguments except for the path option.
For information on restart of Nonlinear Analysis, refer to Requirements for Restarting in the User Guide.
RESTARTW and RESTARTR entries can be specified together, except for the very first run (that is, the original job that is subsequently restarted), where only RESTARTW is allowed.
RESTARTW is not supported if there are multiple subcase continuation chains in the model; multiple subcase continuation chains occur when multiple nonlinear subcases reference different subcases via CNTNLSUB).