L2Cache (L2 Cache Hit Ratio)

The L2 cache hit ratio data is saved in the L2Cache.csv file, which affects the memory transfer engine (MTE2). You are advised to properly plan the data transfer logic to increase the hit ratio. For details, see the field description in the following table.

Figure 1 L2Cache.csv file

See the following table for more details.

**Table 1** Field description
Field	Description
block_id	Number of running task blocks, which corresponds to the number of cores configured during task running.
sub_block_id	Name and sequence number of each block used for task running.
aic_time(us)	Execution time (μs) on each AI Cube Core compute unit after the task is allocated to each AI Cube Core compute unit.
aic_total_cycles	Total number of cycles executed on each AI Cube Core compute unit after the task is allocated to each AI Cube Core compute unit.
aiv_time(us)	Execution time of each AI Vector Core compute unit after the task is allocated to the unit, in μs.
aiv_total_cycles	Total number of cycles executed on each AI Vector Core compute unit after the task is allocated to the unit.
ai*_write_cache_hit	Write cache hits.
ai*_write_cache_miss_allocate	Cache re-allocations upon write cache missing.
ai_r_read_cache_hit	Read cache hits in the r* channel.
ai_r_read_cache_miss_allocate	Cache re-allocations upon read cache missing in the r* channel.
ai*_write_hit_rate(%)	Write cache hit ratio.
ai*_read_hit_rate(%)	Read cache hit ratio.
ai*_total_hit_rate(%)	Read/Write cache hit ratio.

Figure 2 L2Cache.csv file

See the following table for more details.

**Table 2** Field description
Field	Description
aic_l2_cache_hit_rate	Ratio of the number of times that memory access requests hit L2 to the total number of memory access requests.

Parent topic: msprof op