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Yogesh's avatar
Yogesh
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Ways to improve timing on Top module?

Say I have 3 modules: 1) Top module 2) sub-module A-(achieved freq 150Mhz when compiled separately) 3) sub-module B-(achieved freq 200 Mhz when compiled separately) After I instantiate sub-...
Yogesh's avatar
Yogesh
Icon for Occasional Contributor rankOccasional Contributor
5 years ago
Hi Khai,

Average interconnect usage (total/H/V) 50.7% / 48.7% / 57.0%
Peak interconnect usage (total/H/V) 80.4% / 81.7% / 86.1%
Since average interconnect is less it should not cause any problems in routing right ?
But 8 out of 10 times fitter terminates because of routing congestion.
Is there a way to find which module has high interconnect usage ? So that I can change the coding style and improve timing .
KhaiChein_Y_Intel's avatar
KhaiChein_Y_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi Yogesh,

Yes. There is a way to check which module uses most of the routing resources.

Thanks.

Best regards,

KhaiY

 

  • Yogesh's avatar
    Yogesh
    Icon for Occasional Contributor rankOccasional Contributor
    5 years ago

    Hi Khai,

    I think the screenshot you shared is for quartus pro edition. I am using intel quartus standard edition 18.1

    I find only routing usage summary under logic and routing section ,which only talks about resources like Block interconnects
    C12 interconnects
    C2 interconnects
    C4 interconnects

    and not about module level usage . Is there someother option to check the same w.r.t each module of my project?

    thankyou

    regards,

    Yogesh

    • KhaiChein_Y_Intel's avatar
      KhaiChein_Y_Intel
      Icon for Regular Contributor rankRegular Contributor
      5 years ago

      Hi Yogesh,

      The report in the Pro edition is different from the Standard edition. In this case, you have to check the routing utilization in the Chip Planner.

      Thanks.

      Best regards,

      KhaiY

      • KhaiChein_Y_Intel's avatar
        KhaiChein_Y_Intel
        Icon for Regular Contributor rankRegular Contributor
        5 years ago

        Hi,

        We do not receive any response from you to the previous question/reply/answer that I have provided. This thread will be transitioned to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you

        Best regards,

        KhaiY