[icpc Warning]: Specifying -lm before files may supersede the Intel(R) math library and affect performance

jia__feilin — Thu, 08 Nov 2018 22:08:44 GMT

I just notice this warning while compiling my C++ code. My sIntel version is

compilers_and_libraries_2018.3.222

My compile options from the MKL advisor is in MKL advisor

Then it will say a warning:

Specifying -lm before files may supersede the Intel(R) math library and affect performance

Although it is just a warning, I am not sure whether or not it will harm the performance. Does anyone have the similar problem?

Do you see the perf problems

Gennady_F_Intel — Sat, 10 Nov 2018 03:57:30 GMT

Do you see the perf problems with your specific code work with / without this mode?