Cache management instructions for Intel Xeon Processors

Hi all,

I looked around but couldn't see any cache management instructions for Xeon processors (I am working on Xeon E7-8860 v4). I found that we can use _mm_clevict for MIC architecture.

Is there a similar way to do this on Xeon E7-8860 v4? What I am looking to do is, reduce priority of some cache line so that it will be one of the first ones to get evicted. For instance;

int* arr = new int[ length ];

for ( int i = 0; i < length; ++i )

{

   // use arr[i]

   if ( ( i - 1 ) % CACHE_LINE_SIZE == 0 )

      reduce_priority( arr[ i - 1] ); // reduces the priority of the cache line in which a[ i - 1 ] resides in

}

If not, can I achieve this by different means?

Any suggestion will be greatly appreciated.

Thanks a lot.

Matara Ma Sukoy