title: Intell TBB Performance
body: <p>I took a TBB matrix multiplication from <a href="http://blog.speedgocomputing.com/2010/08/parallelizing-matrix-multiplication_8641.html" rel="nofollow noreferrer">here</a></p>
  
  <p>This example uses the concept of blocked_range for parallel_for loops. I also ran a couple of programs using Intel MKL and eigen libraries. When I compare the times taken by these implementations, MKL is the fastest, while TBB is the slowest (10 times slower than eigen on an average) for a variety of matrix sizes (2-4096). Is it normal or am I doing something wrong ? Shouldn't TBB performing better than eigen at least ? </p>