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rewires and Device mismatches in LVS

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sureshnaidu

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can anyone explain the rewires and Device mismatch errors in LVS.I have attached the screenshot of device mismatch tool.the left half window shows schematic devices and the right side indicate layout devices.how to rectify these.thanks in advance
 

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Rewires are a class of unmatched nets where the LVS thinks
it has a better idea.

It's usually better to work from nets than devices, because
a net usually "fixes" or "breaks" many devices at once.

You have to slog through the rewires and unmatched nets
one at a time, highlight the stuff they call out and look for
what's broken or unhooked.
 

As far as assura goes the device errors are always accurate since even the swap errors are identified only in device errors. As per the rule sets inside assura a rewire or net generally would look for a equivalent type of device in schematic and layout. Always better to clean rewires 1st then take up devices . Again this depends on individuals comfort level
 

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