eldo_user

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Eldo Premier
Other Supported Functionality
The .REDUCE CC and .REDUCE RONLY commands are not supported.
• Reduction options
The following options are supported:
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.OPTION REDUCE_KEEP_INST
.OPTION REDUCE_KEEP_NODE
.OPTION REDUCE_KEEP_OUTPUTS
.OPTION REDUCE_MAX_CAP
.OPTION REDUCE_MAX_RES
• Use .OPTION PREMIER_RCC to enable a number of RCC specific reduction options
to improve the performance while preserving accuracy on RCC parasitic post-layout
netlists.
Note
In addition to the support listed above, some modifications have been made to the default
values set by the PREMIER_MODE tuning option in Eldo Premier.
You can control the performance and accuracy of RC reduction in different ways, with the
following rules of precedence (from highest priority to lowest priority):
1. Manual setting, for example MINRVAL/SPLITC options.
2. .REDUCE TUNING=vhigh|accurate|standard|fast
3. .OPTION PREMIER_RCC
4. .OPTION PREMIER_MODE=OFF|1|2|3|4
Note
Mixing these options is not recommended as it may lead to unexpected results.
Limitations
• The TICER algorithm is supported with the following limitations:
Only R and C elements are reduced; L and K elements are not.
TICER reduction is less aggressive in Eldo Premier than in Eldo Classic, because some
optimizations (port merging and CC clumping) are not available.
• The following algorithms are not supported by Premier:
RONLY reduction, CC reduction.
• The following options are not supported:
Eldo® User's Manual, 15.3 91