Hello,


About “write combining store buffers”..

Modern CPUs employ lots of techniques to counteract the latency cost
of going to main memory. These days CPUs can process hundreds of
instructions in the time it takes to read or write data to the DRAM
memory banks.

The major tool used to hide this latency is multiple layers of SRAM
cache. In addition, SMP systems employ message-passing protocols to
achieve coherence between caches. Unfortunately CPUs are now so fast
that even these caches cannot keep up at times. So to further hide this latency a number of less well-known buffers are used.

This article explores “write combining store buffers” and how we can
write code that uses them effectively.

Read more here:

https://www.i-programmer.info/programming/hardware/3114-write-combining.html



Thank you,
Amine Moulay Ramdane.

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