XBT_PUBLIC_DATA(int) SURF_CPU_LEVEL; //Surf cpu level
XBT_PUBLIC_DATA(int) SURF_HOST_LEVEL; //Surf workstation level
XBT_PUBLIC_DATA(int) SIMIX_STORAGE_LEVEL; //Simix storage level
XBT_PUBLIC_DATA(int) SURF_CPU_LEVEL; //Surf cpu level
XBT_PUBLIC_DATA(int) SURF_HOST_LEVEL; //Surf workstation level
XBT_PUBLIC_DATA(int) SIMIX_STORAGE_LEVEL; //Simix storage level