eldo_user

Eldo Control Language
Eldo Control Language Limitations
Example Dir
30-modify_mc_distrib
31-mcconv_mcsens
32-
find_important_stat_p
arams
33-
para_find_important_s
tat_params
Table 18-1. Eldo Control Language Example Files (cont.)
Description
Example showing how the distribution of a statistical parameter can be
modified. This example uses _simu_lock_stat_param to keep only one
statistical parameter (found using _simu_get_stat_param_netlist_dev) to
see the impact on the results of the modification of its distribution. The
distribution is modified so that each sampled value is greater than twice
the half-range of the distribution (_simu_get_random is called until
getting such a value and the value is set using
_simu_set_stat_param_sampling_val).
After running, the impact on the result can be seen in
modify_mc_distrib.wdb. The first waveform is the default result
(simulation using the initial gaussian distribution) and the second result is
the result of the simulation using the modified distribution.
Example showing how to monitor the evolution of the average, deviation,
and sensitivities of an extract. This data is displayed on the standard
output. This example uses avg, std, _simu_get_mcsens to compute the
statistical data, and mcconv to stop the simulation once the extract has
converged.
Example showing how to run an ECL Monte Carlo simulation of a 1-bit
adder netlist to find the most important parameters acting on the
propagation delay. Then the width of the corresponding MOS is increased
to see how it impacts this delay. These results are displayed on the
standard output. This example uses _simu_run(mode="nom") to run the
nominal simulation to get the default delay, _simu_run(mode="mc 20") to
run multiple times 20 Monte Carlo simulations until mcconv returns that
the interesting extract has converged, and _simu_get_mcsens to get the
important parameters.
Same example as before but using parallel runs.
Related Topics
Examples Using ECL as an Alternative to Standard Eldo Commands
Eldo Control Language Limitations
The Eldo Control Language has some limitations to consider.
• Netlists containing .MPRUN commands (multiple run of simulations) are fully
supported by Eldo Control Language, including with LSF (Load Sharing Facility) and
OGE (Oracle Grid Engine) dispatchers. If a netlist containing a .MPRUN command is
simulated in a Control Language task, then the Eldo process simulating this netlist will
effectively run multiple simulations on multiple processors or on many machines.
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Eldo® User's Manual, 15.3