I recently upgraded from Intel Fortran Studio XE 2013 SP1 Update 2 to Parallel Studio XE 2015 and am finding that my application now runs quite a bit slower than with the old compiler.
Both versions are being used with Visual Studio 2010 and I have identical source code, identical VS settings and I'm running everything on the same computer. I am compiling a release 64bit version of my application and I'm finding that an example of what took 3 seconds to run now takes 12 seconds. My application involves a mixture of file IO functions and floating point calculations. I can't really tell which of those two components has become slower because they are very much intertwined.
Has anyone else experienced this problem?