A better solution, if you don't need to synchronize writes to said variable across cores, is just to let the compiler figure it out. Dumping the contents of the

A better solution, if you don't need to synchronize writes to said variable across cores, is just to let the compiler figure it out. Dumping the contents of the variable into a register is much faster than accessing L1. If you label the variable as const the compiler should be able to figure out that it's safe to concurrently read it into a register from multiple cores. Unless you are writing highly optimized assembly it's a good bet the compiler will do a better job than whatever you do.