@unpublished{TUW-228682, author = {Rupp, Karl and Tillet, Philippe}, title = {{P}erformance-portable kernels in {O}pen{C}{L}: {L}essons learned}, year = {2013}, note = {invited; talk: {B}{L}{I}{S} {R}etreat, {A}ustin, {U}{S}{A}; 2013-09-05 -- 2013-09-06} }