Design compiler high fanout

  • What are high fanout nets?

    What are High Fanout Nets(HFN) ? High Fanout Nets are the nets which drive more number of load.
    We set some max fanout limit by using the command set_max_fanout.
    The nets which have greater than these limit are considered as High Fanout Nets (HFN)..

  • What are high fanout nets?

    What are High Fanout Nets(HFN) ? High Fanout Nets are the nets which drive more number of load.
    We set some max fanout limit by using the command set_max_fanout.
    The nets which have greater than these limit are considered as High Fanout Nets (HFN).May 8, 2021.

May 19, 2013Design Compiler computes the delays of high-fanout nets with a simpler model to delimit the computation effort. That can reduce the accuracy 

How many high fanout nets are in VHDL?

vhdl - Warning:

  • Design contains 1 high-fanout nets.
    A fanout number of 1000 will be used for delay calculations involving these nets. (TIM-134) - Stack Overflow Warning:Design contains 1 high-fanout nets.
    A fanout number of 1000 will be used for delay calculations involving these nets. (TIM-134) .

    • What are the problems caused by high fanout nets?

    High fanout nets, especially resets and gated clock nets, typically result in long synthesis runtimes, and gives poor results.
    Fortunately, Design Compiler 2000.11 has added some improvements that can help designers overcome these problems.
    This paper will first show some of the problems caused by high fanout nets.


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