Monday, October 30, 2017

report_bolttleneck

The following example reports the 20 worst bottleneck cells in the design based on the number of paths through the cell with slack less than 0.0.
pt_shell> report_bottleneck

****************************************
Report : bottleneck
        -max_cells 20
        -nworst_paths 100
Design : example
 ...
****************************************

Bottleneck Cost = Number of violating paths through cell

                                                 Bottleneck
Cell                              Reference      Cost
--------------------------------------------------------------
ipxr/ir1/i2/i0/u3                 DFF1A          39656.00
ipxr/ir1/U14                      INV2           39654.00
ipxr/ir1/U16                      INV8           39654.00
ipxr/ir1/i2/i0/u4                 DFF1A          31806.00
ipxr/ir1/U15                      BUF8B          31804.00
ipxr/U1712                        MUX2I          23999.00
ipxr/U558                         INV4           23999.00
ipxr/U1370                        NAN4           22485.00
ipxr/x01                          INV2           22485.00
dmac/BufEn                        BUF3           22485.00
dmac/U574                         INV            22485.00
ipxr/U1335                        NAN6CH         21844.00
ipxr/U564                         MUX2I          20074.00
ipxr/U1694                        MUX2A          19936.00
ipxr/U1559                        BUF2C          14785.00
ipxr/U1484                        MUX2I          14252.00
ipxr/U1486                        MUX2I          12468.00
SccMOD/U929                       OR3            12135.00
ipxr/U1493                        MUX2I          11248.00
dmac/BiuSMOD/U879                 NAN2           10949.00

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