Difference between debugging and optimized version of PETSc

[Ben Tay]

Hi,

May I know what's the difference between the optimized and debugging
version?

Have the optimization flags such as -O3 been used in the compilcation of the
libraries for the optimized one? Whereas for the debugging version, there is
no optimization by the compiler?

If my program works fine in the debugging version, does it mean that I will
not get errors in the optimized version?

Thanks
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