report_net_stats

report_net_stats 
{ -set d_setObj | -net {s_netName…} | -summary } 
[ -file s_fileName ] 
[ -omit_transcript ]
[ -include_extents ] 

Description

Generates a Net Statistics report on the nets in the given list or set, or a Net Term Count report for all nets (-summary).

The Net Statistics report is output to the Transcript area and, optionally, to a file, and reports either the net count (-omit_transcript), or the following information:

• Number of terms (logical points on nets that can be connected from outside)
• Number of inst terms (logical points on instances that can be connected to a net)
• Number of guides (opens in nets)
• Number of steiners (pins that are not associated with a terminal or instance and are used to implement a virtual pin for routing control)
• Total, horizontal, and vertical wire length for each layer
• Number of vias for each layer
• Number of route segments for each layer

The Net Term Count report gives the number of nets grouped by the number of terms per net.

The GUI equivalent for this command is Report—Net Statistics.

Arguments

-file s_fileName	Specifies a file to output the net statistics to. By default, no file is created.
-include_extents	Includes extents in the reported wire lengths. By default, extents are not included.
-net {s_netName…}	Reports on nets in the list.
-omit_transcript	Prevents net statistics from being output to the Transcript area. By default, the report is output to the Transcript area.
-set d_setObj	Reports on nets in the given set.
-summary	Reports the number of nets with the same number of terms per net. For example, 2:6  3:1  4:2 reports that six nets have 2 terms, one net has 3 terms and two nets have 4 terms.

Examples

The following example outputs the net statistics for the nets in the HL1 highlight set to the Transcript area and the HL1nets.txt file.

report_net_stats -file HL1nets.txt -set [get_highlight -name HL1]

The following is an example of net statistics reported for one of the nets in the set:

Net Statistics:

Net: TDSP_CORE_INST_dmov_inc       Cellview: small8000/small8000_routed/layout

# Terms  # Inst Terms  # Guides  # Steiners
0            29         0           0

Layer     Wirelength  HWirelength  VWirelength  # Vias (Down)  # Route Segments
Total         1804.4       1100.1        704.3             99                93
met1            88.5         88.5            0              0                12
met2           476.2           12        464.2             45                42
met3           633.1        631.2          1.9             34                28
met4           238.2            0        238.2             12                 7
met5           368.4        368.4            0              8                 4

The following is an example of a Net Term Count report.

Net Term Count Report (12 nets):
    1:   4      2:   2      3:   1      4:   3      5:   2
12

Related Topics

Report Commands

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