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Altera_Forum
Honored Contributor
14 years ago9.0 is quite old! Is it possible to move to a newer version of Quartus?
Anyways, the most common cause of this IE in 9.0 that I can find is related to parallel synthesis. A workaround is to check your QSF to see if this feature has been enabled and if so to disable it by adding:
set_global_assignment -name PARALLEL_SYNTHESIS off