Critical Issue
Description
In the Quartus® II software release version 14.0, if you compile
a design using the quartus_advanced_physical_optimization Quartus
II Settings File (.qsf), using different values for
the num_parallel_processors .qsf might generate different
compilation results.
For example, if quartus_advanced_physical_optimization is
enabled, a Quartus II software compilation run with the num_parallel_processors .qsf set
to 4 will not necessarily generate the same
results if you compile the same design with the num_parallel_processors .qsf set
to 8.
Resolution
You must set a fixed value for the num_parallel_processors .qsf or
leave the value unspecified.