CODEWITHSUNDEEP
c++windowscachingprefetch
MainID
MainID

Reputation: 30104

How to close the prefetch of cache in windows?

In a C/C++ program, how to close the prefetch of each core in the Windows system?

Upvotes: 4

Views: 756

Answers (2)

rep_movsd
rep_movsd

Reputation: 6895

There is a Windows API call FlushInstructionCache()

Perhaps this is what you need? It is typically used by self modifying code to make sure changes to code in the RAM are visible to the processor.

Upvotes: 3

t0mm13b
t0mm13b

Reputation: 34592

I have seen this trick mentioned in some code, although I am not 100% sure if this trick is what you're looking for, however, the code was this

Sleep(0);

By using Sleep(0), you are clearing the CPU instructions and cause a context switch... Now you did say 'for each core', I do not think you can explicitly select a core to do that as how do you know which core is running the code that is need of a closing the pre-fetching of the cache....

Upvotes: 0

Related Questions