Most cutting edge olap engines use SIMD extensively though how and where and how much is always left to imagination (confirmed with snowflake and databricks). A

Most cutting edge olap engines use SIMD extensively though how and where and how much is always left to imagination (confirmed with snowflake and databricks). At least practically speaking, I’ve sometimes amazed at how these engines are almost an order of magnitude faster for some computations when I have done similar computations using C and Java and assumed I knew the best possible performance for a typical cpu..