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17268 Discussions

Very long compilation time

Altera_Forum
Honored Contributor II
‎11-24-2015 05:53 PM
11,943 Views

Hi, 

I am having a problem with extremely long compilation time. A simple VHDL code is taking 1 hour to compile. 

I am using Quartus 15.1 Standard Edition (trial version). I have seen that in the compilation process, it always gets stuck at the fitter process. At this point it states " The Fitter is using Advanced Physical Optimization" as shown in the attached screen shot . I have also seen that during this process, my computer's CPU usage goes to 100%. 

Kindly advise how to speed up the compilation specially the fitting process. 

Misha
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CLa_R
Novice
‎05-08-2020 08:54 PM
850 Views

I noticed that, in my design (a MISP type CPU mono clock), if I wired the final MUX selection signal with control signal, the compile stuck on 47%. If I fix the select signal of final MUX to a value (eg. VCC), my design compile in few seconds. But...why?

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For more complete information about compiler optimizations, see our Optimization Notice.