which type of variables shared between threads through cache ?

Question

In the below figure through shared l2 cache what type of data (I mean is it global variables ?) is shared .

Comments

Sorry could not understand your query, how variable type should be related to a l2 cache.

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I mean what kind of information is shared?

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I dont think it should have some relation with the variable type, When we dont had the concept of unlayered cache it was always a tradeoff between latency and miss (big size cache reduces the miss but increases the latency which small size increases the miss)

Lets wait for what others are saying :)