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EugeneF's avatar
EugeneF
Icon for New Contributor rankNew Contributor
3 years ago
Solved

Quartus 18.1 fitter crash

Sometimes (after minor changes) during project compilation fitter crashes with an error: Error: Internal Error: Sub-system: VPR20KMAIN, File: /quartus/fitter/vpr20k/vpr_common/cluster_legality_p...
  • IntelSupport's avatar
    IntelSupport
    3 years ago

    Hi Eugene,


    Please let me know if you are able to resolve this using below suggestion.


    Update:


    I am able to pin down the IE is triggered during heuristic accounting of input pins to a cluster. This heuristic counting is used to generate packing that give more flexibility for router to resolve local congestions for outlier designs, so it should be generally safe to disable this. I have tried the INI to disable this algorithm and the design is able to compile successfully.


    Here is the encrypted INI (copy and paste this ini in your qsf) for 21.1 std (encrypted INI support is only avaliable for 20.1std or newer) then recompile.

    ini_password = 0f56f88f5713676e261178731ef27f42b49cd891b355d81b400032576444751330035221150003342320131030052576




EugeneF's avatar
EugeneF
Icon for New Contributor rankNew Contributor
3 years ago

Small parts of the design doesn't reproduce the issue. Only all design gives that error.

I've attached database, maybe it helps.