Invalidation vs Update
•1 Repeat k times: P1 writes V, P2-Pp read V
• … perhaps representing work allocation
•2 Repeat k times: P1 writes V M times, P2 reads
• … perhaps representing sharing pair
•invl = 6B, update = 14B, miss = 70B
•P = 16, M = 10, k = 10
U1: 1,260B I1:10,624B
U2: 1,400B I2:     824B