# cgminer --scrypt -o http://foo.bar:#### -u cryptoAddress -p foobar


the abstraction layer defines your cryptography in OpenCL between CPU/GPU (an interface), which means that you don't have to explicitly cast "w 256", as it's implied by the engines you're using. aces.snu.ac.kr/~jlee/Jaejin_Lees_Home/Pact11_tutorial.html