From December 10th to 11th the 26th Workshop on Sustained Simulation Performance will take place at HLRS. HLRS organizes this workshop in cooperation with NEC. The Workshop on Sustained Simulation Performance will focus on the highest sustained performance on current and future supercomputer architectures for real world applications. The workshop is a meeting platform for scientists, application developers, international experts and hardware designers from different continents to discuss the current state and future directions of supercomputing. This includes future hardware architectures, the future style of programming and directions to the highest sustained application performance.