Compiler: Intel 16.0.3
OS: OS X 10.10.5
Hello,
We are experiencing much slower compile times with on our OS X machines after we upgraded from the Intel compiler 13.0.3 to 16.0.3. The intel flags used to compile are as follows:
icpc -c -wd858,1572,1569,279 -O3 -inline-level=2 -falign-functions=16 -ansi-alias -xSSSE3 -w -m64 -std=c++11 -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED
We did the same upgrade on our Linux and Windows machines and we did not have the same slow downs. For a comparison our previous build would take ~25 minutes compared to ~70 minutes with the new compiler. Looking at the activity monitor it appears as if the compiler is unable to multi thread and is stuck using one thread despite specifying the number of cores we want to use.