This is a good article describing fast non-cryptographic RNGs: http://www.drdobbs.com/tools/fast-high-quality-parallel-random-number/229625477 http://www.drdobb

This is a good article describing fast non-cryptographic RNGs: http://www.drdobbs.com/tools/fast-high-quality-parallel-random-number/229625477 http://www.drdobbs.com/tools/fast-high-quality-parallel-rand... http://www.drdobbs.com/tools/fast-high-quality-parallel-random-number/231000484 http://www.drdobbs.com/tools/fast-high-quality-parallel-rand... CMRES is quite impressive, I get ~1500 MB/s out of it. Quite useful for generating large unique files for various testcases.