n_start, n_stop

highest precedence

n_center, n_span

n_center, n_spanPercent

lowest precedence

f_step

highest precedence

n_lin

n_dec

n_log

n_oct

n_times

lowest precedence

t_desVar

Name of the design variable to be swept.

?start n_start

Beginning value for the design variable.

?stop n_stop

Final value for the design variable.

?center n_center

Center point for a range of values that you want to sweep.

?span n_span

Range of values that you want to sweep around the center point. For example, if n_center is 100 and n_span is 20 then the sweep range extends from 90 to 110.

?step f_step

Increment by which the value of the design variable changes. For example, if n_start is 1.0, n_stop is 2.1, and f_step is 0.2, the parametric analyzer simulates at values 1.0, 1.2, 1.4, 1.6, 1.8, and 2.0.

?lin n_lin

The number of steps in the analysis. The parametric analyzer automatically assigns equal intervals between the steps. With this option, there is always a simulation at both n_start and n_stop. The value for the n_lin argument must be an integer greater than 0.

For example, if n_start is 0.5, n_stop is 2.0, and n_lin is 4, the parametric analyzer simulates at values 0.5, 1.0, 1.5, and 2.0.

?log n_log

The number of steps between the starting and stopping points at equal-ratio intervals using the following formula:

log multiplier = (n_stop/n_start)⁽n_log ^-1)The number of steps can be any positive number, such as 0.5, 2, or 6.25.

Default value: 5

For example, if n_start is 3, n_stop is 15, and n_log is 5, the parametric analyzer simulates at values 3, 4.48605, 6.7082, 10.0311, and 15.

The ratios of consecutive values are equal, as shown below.

3/4.48605 = 4.48605/6.7082 = 6.7082/10.0311 = 10.0311/15 = .67

?dec n_dec

The number of steps between the starting and stopping points calculated using the following formula:

decade multiplier = 10 ^1/n_dec

The number of steps can be any positive number, such as 0.5, 2, or 6.25.

Default value: 5

For example, if n_start is 1, n_stop is 10, and n_dec is 5, the parametric analyzer simulates at values 1, 1.58489, 2.51189, 3.98107, 6.30957, and 10.

The values are 10⁰, 10.², 10.⁴, 10.⁶, 10.⁸, and 10¹.

?oct n_oct

The number of steps between the starting and stopping points using the following formula:

The number of steps can be any positive number, such as 0.5, 2, or 6.25.

Default value: 5

For example, if n_start is 2, n_stop is 4, and n_oct is 5, the parametric analyzer simulates at values 2, 2.2974, 2.63902, 3.03143, 3.4822, and 4.

These values are 2¹, 2^1.2, 2^1.4, 2^1.6, 2^1.8, and 2².

?times n_times

A multiplier. The parametric analyzer simulates at the points between n_start and n_stop that are consecutive multiples of n_times.

For example, if n_start is 1, n_stop is 1000, and n_times is 2, the parametric analyzer simulates at values 1, 2, 4, 8, 16, 32, 64, 128, 256, and 512.

?spanPercent n_spanPercent

Range specified as a percentage of the center value. For example, if n_center is 100 and n_spanPercent is 40, the sweep range extends from 80 to 120.

?sweepType t_sweepType

Type of parametric analysis. Valid values are:

• paramset - Runs Parametric Set analysis, specific to Spectre.
• nil - Runs Sweeps & Ranges type parametric analysis.

Default value: nil

?values l_values

List of values to be swept. You can use l_values by itself or in conjunction with n_start, n_stop, and f_step to specify the set of values to sweep.

?paramAnalysis o_paramAnalysis

Value returned from another paramAnalysis call used to achieve multidimensional parametric analysis.

undefined

The return value for this command is undefined.

nil

Prints an error message.

s_paramAnalysis

Parametric analysis.

?jobName t_jobName

Used as the basis of the job name. The value entered for t_jobName is used as the job name and return value if the run command is successful. If the name given is not unique, a number is appended to create a unique job name.

?host t_hostName

Name of the host on which to run the analysis. If no host is specified, the system assigns the analysis to an available host.

?drmsCmd t_drmsCmd

A DRMS (Distributed Resource Management System) command, such as a bsub command for LSF or a qsub command for SGE (Sun Grid Engine) used to submit a job. When this argument is used, all other arguments, except ?jobName will be ignored. Moreover, it will not be possible to call the OCEAN function wait on the jobs submitted using this argument.

To know more about the command option, refer to the section Submitting a Job in the chapter Using the Distributed Processing Option in the Analog Design Environment of the Virtuoso Analog Distributed Processing OptionUser Guide.

?queue t_queueName

Name of the queue. If no queue is defined, the analysis is placed in the default queue (your home machine).

?startTime t_startTime

Desired start time for the job. If dependencies are specified, the job does not start until all dependencies are satisfied.

?termTime t_termTime

Termination time for job. If the job is not completed by t_termTime, the job is terminated.

?dependentOn t_dependentOn

List of jobs on which the specified analysis is dependent. The analysis is not started until after dependent jobs are complete.

?mail t_mailingList

List of users to be notified by e-mail when the analysis is complete.

?block s_block

When s_block is not nil, the OCEAN script halts until the job is complete.

Default value: nil

?notify s_notifyFlag

When notifyFlag is not nil, a job completion message is echoed to the OCEAN interactive window.

Default value: t

?lsfResouceStr s_lsfResourceStr

Specifies an LSF Resource Requirement string to submit a job. It is effective only in the LSF mode.

t

The specified parametric analysis is run.

nil

Prints an error message.