Message from the HCW General Chair

In these proceedings you find the papers corresponding to the presentations during the 23 International Heterogeneity in Computing Workshop (HCW 2014) held on May 19 in Phoenix, Arizona. Recent technological progress has generated various alternatives for the design and use of computer systems. While previous decades have seen the end of the many interesting computer architectures resulting in a reduction of heterogeneity, we experience now an increase in variety and heterogeneity on all levels of a computer system. We observe that heterogeneity has become an important feature in modern computer systems providing many opportunities to increase system performance. But the exploitation of these opportunities is really challenging and requires significant research efforts. Therefore, the topic of the 23 International Heterogeneity in Computing Workshop is at least as current as it was more than twenty years ago. In addition to designing applications that can use existing heterogeneity, we are also facing a more difficult challenge in resource management compared to handling homogeneous systems. Finally, we must reliably determine the performance of components and subsystems in such heterogeneous systems. As these issues are all present in the program of this workshop, I am sure that the papers in these proceedings will provide new and interesting information as well as stimulate new research.