In this link : https://software.intel.com/en-us/forums/topic/542786
The effect describe as this sentence: "This bit doesn't affect correctness of IPP functions, in some rare cases it can affect performance only."
1. Correctness of calculation
When program disables FTZ mode, this mode doesn't affect correctness of IPP functions.
However, is correctness of other functions of Intel affected? (Ex: SIMD)
2. Decrease in performance
When does decrease in performance occur?
Does it happen in float calculation when underflow occurs?
Do you have any detail information (such as, how many percents, how may seconds ...) about "decrease in performance" in following cases?
- In case of one calculation.
- In case of one hundred million calculations.
If this phenomenon gives a serious effect in performance, what should do I in order to resolve this problem(avoid underflow exception)?
If you have any hint for this case, please tell me. I appreciate for your support.