The granularity of L1 and L2 caches

[Robert_Crovella]

In modern GPUs (say, Pascal and newer) both the L1 and L2 cache can be populated sector-by-sector. The minimum granularity is 1 sector or 32 bytes. The cache line tag, however, applies to 4 sectors (in each case) that comprise the 128-byte cache line. You can adjust L2 cache granularity.