= '''Cache''' =

Basically, the cache is a location where data is stored for CPU use. But there are many types of memory for the CPU. Ideally, CPU can not access every data with lightning speed. So, let's talk about it in brief. In our PC and laptops, we have hard drives and SSDs which are slow in speed, but they can store big data. So, when the CPU tries to access this data it will take some time, so this process takes more computational time.

Moreover, DRMS is quite expensive. However, it is fast but still, DRMS is not enough for CPUs. DRMS works on electricity. Hence if power is cut that time data is not accessible. Furthermore, SRAM is very fast and smaller but expensive. SRAM memory used in cache. So, the first CPU finds data from the cache and if data is not in the cache, then the CPU starts to find it in the main memory and tries until it finds that data. So, this data transfers into the cache. This transfer works in two ways. The first way is that the same data is transferred into the cache for a short period of time and this is known as temporal locality. Another one is a spatial locality and this method also accessed nearby locations if it will be needed.

= '''Solutions Of False Sharing''' =