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Mickleman's avatar
Mickleman
Icon for Occasional Contributor rankOccasional Contributor
5 years ago
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Failure to fit an Arria 10 design through insufficent LABs when no problem in reports

Hi I have a design for a kernel intended for Arria 10. I can compile and successfully run the design with both 1 and 2 copies of the kernel. There are still plenty of resources available so I am ...
  • Mickleman's avatar
    Mickleman
    5 years ago

    Hi

    With insight from an Intel FPGA expert I have now solved this issue. The problem is that the reports are misreporting the percentage of MLABs that the design is using. The compiler error message is correctly indicating that I am asking for too many MLABs whereas the corresponding Area Analysis report is saying I am using only 65% of them.

    My solution is to check my MLAB use against the known MLAB capacity of the FPGA rather than trust the report.

    Marcus

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

Hi

With insight from an Intel FPGA expert I have now solved this issue. The problem is that the reports are misreporting the percentage of MLABs that the design is using. The compiler error message is correctly indicating that I am asking for too many MLABs whereas the corresponding Area Analysis report is saying I am using only 65% of them.

My solution is to check my MLAB use against the known MLAB capacity of the FPGA rather than trust the report.

Marcus