Years ago I read a similar experiment about max. CPU data flow. Guy was testing how much data can his CPU pass in a second. He was writing it in C, using some L

Years ago I read a similar experiment about max. CPU data flow. Guy was testing how much data can his CPU pass in a second. He was writing it in C, using some Linux optimization, optimizing code for CPU caches, using some magical C vectors that are optimized for such purpose. He got some help from someone working at Google. I tried to find that post but never succeeded. Does anyone here know it?