Editing Input syntax manual (section)

=== set rfr ===

 '''set rfr''' ''STEP'' ''FILE'' [ ''NFILE'' ]

 '''set rfr idx''' ''I'' ''FILE'' [ ''NFILE'' ]

Reads material compositions from a binary restart file. Input values:

{|
| <tt>''STEP''</tt>
| : burnup step from which the compositions are obtained
|-
| <tt>''I''</tt>
| : burnup step index from which the compositions are obtained
|-
| <tt>''FILE''</tt>
| : name of the binary restart file
|-
| <tt>''NFILE''</tt>
| : number of restart files (default value: 1)
|}

<u>Notes:</u>
* This option can be used together with the [[#set rfw|set rfw]] feature for applying changes in the modeled system during burnup calculation.
*The step can be identified via burnup/time step or index, first and second syntax respectively.
*Burnup/time step (first syntax):
**Implicit step: positive value = burnup [in MWd/kgU], negative value = time [in d]
**Explicit step: preceding the depletion step value by "<tt>bu</tt>" or "<tt>days</tt>", followed by the (positive) value itself: <tt>bu</tt> <tt>''STEP''</tt> [in MWd/kgU], <tt>days</tt> <tt>''STEP''</tt> [in d]
**There is a special entry:
***"<tt>continue</tt>": it sets the restart at the latest calculated depletion step.
*Number of restart files:
** By default, it reads a single restart file.
** If a non-domain decomposition simulation requires reading the multiple/split restart files from a former one, the number of restart files <tt>''NFILE''</tt> should be specified. 
***The material depletion zone divisions between the writing and reading simulations should agree too.
*Domain decomposition feature ([[#set dd|set dd]] option), from version 2.1.32:
**The name of the binary restart file is invariant. It corresponds with the standard name of the restart file (without the <tt>_dd[MPIID]</tt> suffix).
**It reads the multiple/split restart files generated from the domain decomposition calculation.
***The number of domains/MPI tasks should match between the writing and reading simulations.