The IBM z13 processor cache subsystem. - Craig R. Walters; Pak-kin Mak; Deanna Postles Dunn Berger; Michael A. Blake; Tim Bronson; K. D. Klapproth; A. J. O'Neill; Robert J. Sonnelitter; Vesselina K. Papazova (IBM J. Res. Dev., 2015)