Saturday, November 15, 2008

以后上班应该每人发套防弹衣...
带防弹眼镜...作在四面防弹玻璃的CUBE里...
最好还隔音...心里不爽就大嚷...反正别人也听不见...
然后开会全部TELECONFERENCE...
最好CUBE里还带厕所和冰箱...这样就省得
出CUBE了...

GF说还得每人一个单独的地下通道...
直接连车库自己的车位...
或者直接连到家里

多好玩儿...
(配一个JAMES BOND也可以 :-) )

Friday, November 14, 2008

gilroy premium outlet black friday sale

Gilroy black friday sale list
click the "Download a PDF of store sale
information" to open pdf file.

Anything interesting to you? Our pot is on
first page lower right corner. But I am not
sure it is cheap enough. :-)

BTW, what hiking boots is good? Which brand? (For men)

Wednesday, November 12, 2008

some interesting interview questions on physical design


  • What are physical design flows, various activities you are involved?
  • Design complexity, capacity, frequency, process technologies, block size you handled.
  • Why power stripes routed in the top metal layers?
    The resistivity of top metal layers are less and hence less IR drop is seen in power distribution network. If power stripes are routed in lower metal layers this will use good amount of lower routing resources and therefore it can create routing congestion.
  • Why do you use alternate routing approach HVH/VHV (Horizontal-Vertical-Horizontal/ Vertical-Horizontal-Vertical)?
    This approach allows routability of the design and better usage of routing resources.
  • What are various techniques to resolve congestion/noise?
    Routing and placement congestion all depend upon the connectivity in the netlist , a better floor plan can reduce the congestion.
  • How do you optimize skew/insertion delays in CTS (Clock Tree Synthesis)?
    Better skew targets and insertion delay values provided while building the clocks.

    Choose appropriate tree structure – either based on clock buffers or clock inverters or mix of clock buffers or clock inverters.

    For multi clock domain, group the clocks while building the clock tree so that skew is balanced across the clocks. (Inter clock skew analysis).



HERE is the full list of the questions. Include above selected physical design interview questions.

ANOTHER LIST of interview questions.