47.3.4. Solver Settings

RecurDyn Standalone Solver does not support GUI. So, if the user wants to change solver settings, a keyword should be replaced or added on each *.rmd file before the simulation. If the solver settings are applied differently for each model, a method for simulating them with the same settings is needed. “StandAloneSolverSettings.sss” is a file that can be helpful in this case.

To set options

  1. Make the StandAloneSolverSettings.sss file in working directory that a *.rmd file exists or install solver directory.

    • The options defined on the file in install solver directory affect the all simulation.

    • The options defined on the file in working directory affect the simulation in the working directory.

  2. Edit the *.sss file and write a keyword as shown below:

    !========== SOLVEROPTION =============!
SOLVEROPTION /
, NUM_THREAD = 4
, RANSAVE = TRUE
, INACTIVATESTOPPAUSERESUME
END

    • The option format starts with SOLVEROPTION.

    • The option format ends with END.

  3. Change options and run standalone solver.

Support options

  1. Multi-Core Processing NUM_THREAD.

    • Write number of threads (number of cores to be used) by adjusting the number after the NUM_THREAD variable.

  2. Playing an Animation RANSAVE”.

    • Write the TRUE for playing an Animation

  3. Inactive Stop, Pause, Resume INACTIVATESTOPPAUSERESUME.

    • Write the INACTIVATESTOPPAUSERESUME, solver do not check file for stop, pause and resume.

To confirm options

The RecurDyn message file (*.msg) that is output with each simulation contains some feedback about options that were used in the simulation. To see the information, open the msg file and search for the string “SOLVER Information”. You can find a block of data in the msg file as shown below:

RecurDyn/SOLVER Information
   No. of CPU Thread = 1
   Save Solver Animation File(RAN) Option is turned on

Note

If StandAloneSolverSettings.sss files with same options are in both working directory and solver install solver directory, options in working directory do work because the priority of options in working directory is higher than in install solver directory one.