Takustr. 7 14195 Berlin Germany Zuse Institute Berlin MATTHIAS NOACK 1 ,F LORIAN WENDE 1 , GEORG Z ITZLSBERGER 2 ,MICHAEL KLEMM 2 AND T HOMAS S TEINKE 1 1 ZUSE I NSTITUTE BERLIN 2 I NTEL DEUTSCHLAND GMBH KART – A Runtime Compilation Library for Improving HPC Application Performance ZIB Report 16-48 (October 2016)