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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