后端encounter MINCUT violation
我在做Add power stripe和Power routing的时候，有以下警告：
Stripe generation is complete; vias are now being generated.
Multi-CPU acceleration using 20 CPU(s).
**WARN: ViaGen Warning: MINCUT rule violation, no via created:
layer V4 at (3884.95, 2914.33) (3885.14, 2926.33)
**WARN: ViaGen Warning: MINAREA rule violation, no via created:
layer M5 at (3887.60, 4639.00) (3887.60, 4651.00)
**WARN: ViaGen Warning: MINAREA rule violation, no via created:
layer M5 at (1757.60, 348.04) (1757.60, 360.04)
**WARN: ViaGen Warning: MINAREA rule violation, no via created:
layer M5 at (1757.60, 1742.79) (1757.60, 1754.79)
**WARN: ViaGen Warning: MINAREA rule violation, no via created:
layer M4 at (1754.10, 3244.25) (1754.10, 3256.25)
**WARN: ViaGen Warning: MINAREA rule violation, no via created:
layer M5 at (1757.60, 4639.00) (1757.60, 4651.00)
**WARN: ViaGen Warning: MINAREA rule violation, no via created:
layer M5 at (1770.60, 1755.79) (1770.60, 1767.79)
**WARN: ViaGen Warning: MINAREA rule violation, no via created:
layer M5 at (1770.60, 3231.25) (1770.60, 3243.25)
我在做Power routing的时候，有以下警告：
sroute post-processing starts at Mon Sep 21 19:53:17 2015
The viaGen is rebuilding shadow vias for net VSS.
**WARN: ViaGen Warning: MINCUT rule violation, no via created:
layer V2 at (485.60, 360.24) (497.60, 360.46)
**WARN: ViaGen Warning: MINCUT rule violation, no via created:
layer V2 at (485.60, 461.57) (497.60, 461.84)
**WARN: ViaGen Warning: MINCUT rule violation, no via created:
layer V2 at (485.60, 451.45) (497.60, 451.76)
**WARN: ViaGen Warning: MINCUT rule violation, no via created:
layer V2 at (485.60, 441.33) (497.60, 441.68)
**WARN: ViaGen Warning: MINCUT rule violation, no via created:
layer V2 at (485.60, 502.05) (497.60, 502.16)
**WARN: ViaGen Warning: MINCUT rule violation, no via created:
layer V2 at (485.60, 491.93) (497.60, 492.08)
**WARN: ViaGen Warning: MINCUT rule violation, no via created:
layer V2 at (485.60, 481.81) (497.60, 482.00)
**WARN: ViaGen Warning: MINCUT rule violation, no via created:
layer V2 at (485.60, 471.69) (497.60, 471.92)
**WARN: ViaGen Warning: MINCUT rule violation, no via created:
layer V2 at (824.43, 360.24) (836.43, 360.46)
**WARN: ViaGen Warning: MINCUT rule violation, no via created:
layer V2 at (824.43, 461.57) (836.43, 461.84)
请问这个MINCUT是在哪里定义的呢?大部分都是与内部IP block相交时出现的这个警告，请问要怎么让encounter自动连接上，不然后面会报open的问题?由于这个原因，导致上百条都是open的线，手动连接又不方便，谢谢各位大侠！
tech lef里面有的，你是IP 连什么power? 不行的话手拉（addwire） ， sroute只能做较为简单的power route，warning太多自己也看不清的
IP连接core power 1.8V，IP用M3和M4作为power ring，宽度是12um。工艺是M6层的，lef定义的CUT大小如下：
LAYER V1
TYPE CUT ;
SPACING 0.26 ;
AntennaAreaRatio20 ;
AntennaDiffAreaRatio PWL ( ( 0 20 ) ( 0.203 20 ) ( 0.204 92.0 ) ( 1 158.33 ) ) ;
END V1
LAYER V2
TYPE CUT ;
SPACING 0.26 ;
AntennaAreaRatio20 ;
AntennaDiffAreaRatio PWL ( ( 0 20 ) ( 0.203 20 ) ( 0.204 92.0 ) ( 1 158.33 ) ) ;
END V2
LAYER V3
TYPE CUT ;
SPACING 0.26 ;
AntennaAreaRatio20 ;
AntennaDiffAreaRatio PWL ( ( 0 20 ) ( 0.203 20 ) ( 0.204 92.0 ) ( 1 158.33 ) ) ;
END V3
LAYER V4
TYPE CUT ;
SPACING 0.26 ;
AntennaAreaRatio20 ;
AntennaDiffAreaRatio PWL ( ( 0 20 ) ( 0.203 20 ) ( 0.204 92.0 ) ( 1 158.33 ) ) ;
END V4
LAYER V5
TYPE CUT ;
SPACING 0.35 ;
AntennaAreaRatio20 ;
AntennaDiffAreaRatio PWL ( ( 0 20 ) ( 0.203 20 ) ( 0.204 92.0 ) ( 1 158.33 ) ) ;
END V5
有坐标的，去看看，十九是要打via的地方是不完全搭上的情况，最小的via搭不上，具体情况具体对待，可能搭不上也没关系，
在layer 定义里面，如
MINIMUMCUT 2 WIDTH 1.40 ;
这种语句规定了的， IP连接core pg用手连就好了， sroute控制的不好
只要DRC的时候不报error，就不用管它是吗?
我的lef文件里面，有layer 和via的定义，但是没有MINIMUMCUT，只有CUT在via里面有定义。
“IP连接core pg用手连就好了， sroute控制的不好”，你是说在sroute之前对IP block放置size/place/routing blockage，再做sroute，之后手动将IP pg连接到power ring pg上面吗?谢谢！
手工帮ip 做power route的时候 也就取代了部分sroute的功能， sroute包括各种pg route，
比如对macro的，对pad的，对stdcell的， 最实用的也就是followpin连接了，
"手工帮ip 做power route的时候 也就取代了部分sroute的功能， sroute包括各种pg route，
比如对macro的，对pad的，对stdcell的， 最实用的也就是followpin连接了"
如果要手工帮IP做power route的话，是不是在sroute对话框里面进行修改?我把那个blockPin去掉了，还是不行，如下图所示。请问具体是怎么把sroute对IP的power route功能去掉呢?谢谢！
手工就是用editwire （ 按e）来连接的
如果是sroute，你可以一个一个按钮试试，多了什么，比如followpins，pad pins，floating stripes等
有几条没有连到IP上是不是也无关紧要啊?