eldo_user

Optimization
Optimization of Sweep Simulations
parameters involved in the .STEP, .DATA and .TEMP commands, and a sequence of
optimizations is launched, one for each of the discretized values in the sweep domain.
Note
When the OPSELDO_OUTER is active, the OUTER parameter in the .OPTIMIZE
command is ignored.
Related Topics
Inner and Outer Sweep Parameters
Hierarchy and Depth of Sweep Parameters
Hierarchy and Depth of Sweep Parameters
The hierarchy (or the default order of precedence) of the commands that define the variation of
the parameters is given by the following:
• Several .ALTER blocks with the label denoted by A 1 , A 2 , and so on.
• A .TEMP command or a .STEP command on temperature:
.TEMP T1 T2 ...
.STEP TEMP T_START T_STOP T_INCR
• A .STEP command using different variants of libraries (or corners K):
.LIB mylib TYP
.STEP LIB(mylib) K1 K2 ...
• A .STEP command on circuit parameters:
.STEP PARAM ALPHA ALPHA_START ALPHA_STOP ALPHA_INCR
• Multiple sweeps or nested sweeps on parameters, and a parameter sweep in the analysis
command. These parameters are denoted by a, b, and so on. The cases of DC, AC and
transient analyses are represented by the command syntax:
.{AC | TRAN} SWEEP DATA=DATA_SWEEP
.DC SWEEP DATA=DATA_SWEEP
where a two parameter sweep is defined with:
Eldo® User's Manual, 15.3 637