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How large is your design and how long are you waiting? The Fitter can take a long time (many hours) for large complex designs and not post any messages for certain stages. As long as the timer in the lower right corner is still going, the program has not crashed, it's just chugging through your design.
Those warnings won't affect compilation time, but you should follow the recommendation to avoid potential SSN issues.
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Thanks for your response :(
I nearly waited for one hour, the compilation was in process.
What is SSN issue ?How to sort it out ?
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