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Subject: BUffer Profiling
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mvvijay78
Posts: 11
Online: User is Offline
6/20/2007 1:50 AM  
Is there a way to get the buffer classiifcation in encounter i.e a way to report the number of CTS buffers, hold buffers etc .
bougantp
Posts: 19
Online: User is Offline
6/20/2007 1:58 AM  
In the Encounter User Guide doc, you can find the naming convention used by Encounter during implementation to added cells and nets.
In Optimizing Timing -> Naming Conventions

Typically you can find that buffer added for fix Hold will be prefix with "FE_PHC".

You can use this prefix analysis to sort all your buffers.
eminemshow
Posts: 75
Online: User is Offline
6/20/2007 2:01 AM  
Really learn a lot of things from you, bougantp!! Solute!!
mohanch007
Posts: 52
Online: User is Offline
6/20/2007 11:17 PM  
Hi please make a note to get number of CTS buffers :

easy way : in "Clock Tree Timing Report" you will get Nr. of Buffer : ** " value directly but need to take from all CTS root point.

alternative way for design : grep "__L" in def file .

Note :
NameDelimiter

if you change in any case by
NameDelimiter # creates names with the format clk##L3#I2, rather than the default format, clk__L3_I2.

UseSingleDelim YES
(creates clock and net names with the format clk_L3_I2, rather than the default format, clk__L3_I2)

Naming Conventions
Instance Description Command
FE_ABC Instance name added by multi-driver netbuffering.optDesign
FE_ABN Net name added by multi-driver net buffering. optDesign
FE_OCPN Net name added by critical path optimization. optDesign
FE_OCPC Instance name added by critical path optimization.optDesign
FE_FHN Net name added by hold time repair optDesign
FE_FHC Instance name added by hold time repair. optDesign
FE_RC Instance created by netlist restructuring. optDesign
FE_RN Net created by netlist restructuring. optDesign
FE_OFN Buffer net name added by rule-based buffer insertion insertRepeater/optFanout
FE_OFC Buffer instance name added by rule-basedbuffer insertion insertRepeater/optFanout
FE_PHC Cell name added by post-route hold repair. optDesign
FE_PHN Net name added by post-route hold repair. optDesign
FE_PSC Cell name added by post-route setup repair. optDesign
FE_PSN Net name added by post-route setup repair. optDesign
FE_ECON A net added by interactive ECO
FE_ECOC An instance added by interactive ECO


Regards,
Mohan
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