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Long Run Times

sureshm

 Hi

   I am using EDI-09.12.00 version for my synthesis. 

I am not aware of the total design size, but the total number of the flops in the design are around 365k. 

I am wondering if the tool has the capability of handling such high instance count.

I am seeing a lot of run times being there.. it stops after 

Synthesizing to gates
Tue Feb 01 21:33:19 IST 2011
Mapping mydesign to gates.
      Mapping 'mydesign'...
        Preparing the circuit
          Pruning unused logic
 

 I am not sure whether

1) The tool is proecssing any data internally 

2) or the tool got hung there.. 

 

how do i debug the reason for the long run times. 

Thanks

suresh 

 

Parents

  •  Hi Suresh,

    thanks for your reply. 9.1-p004 is early 2009 so, as a first step, I would move to a newer release since your run, while it may complete, seems has definitely hit a bug. I am currently using RC10.10.200, Version: RC10.1-s202 and had good luck with it. Bear in mind your runtime will still be long (at least I would expect) but certainly complete. Also, what tool generated your starting netlist ?

    As per reviewing some of the upfront metrics, since you are starting from netlist, you can just stop after applying the constraints and perform the analysis. I certainly do not know much about your design but 300 levels of logic certainly seems like a recepie for trouble

    Last but not least, I am assuming you cannot post much more detail on the forum so you may want to contact your local AE who will be able to look at the design with you and give you more guidance. 

     

    gh-

Reply

  •  Hi Suresh,

    thanks for your reply. 9.1-p004 is early 2009 so, as a first step, I would move to a newer release since your run, while it may complete, seems has definitely hit a bug. I am currently using RC10.10.200, Version: RC10.1-s202 and had good luck with it. Bear in mind your runtime will still be long (at least I would expect) but certainly complete. Also, what tool generated your starting netlist ?

    As per reviewing some of the upfront metrics, since you are starting from netlist, you can just stop after applying the constraints and perform the analysis. I certainly do not know much about your design but 300 levels of logic certainly seems like a recepie for trouble

    Last but not least, I am assuming you cannot post much more detail on the forum so you may want to contact your local AE who will be able to look at the design with you and give you more guidance. 

     

    gh-

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