TY - JOUR T1 - Exploiting Statically Schedulable Regions in Dataflow Programs JF - Journal of Signal Processing Systems Y1 - 2011 A1 - Gu, Ruirui A1 - Janneck, Jörn W. A1 - Raulet, Mickaël A1 - Bhattacharyya, Shuvra S. KW - Cal KW - Circuits and Systems KW - Computer Imaging, Vision, Pattern Recognition and Graphics KW - Dataflow KW - DIF KW - Electrical Engineering KW - Image Processing and Computer Vision KW - multicore processors KW - pattern recognition KW - Quasi-static scheduling KW - Signal, Image and Speech Processing AB - Dataflow descriptions have been used in a wide range of Digital Signal Processing (DSP) applications, such as multi-media processing, and wireless communications. Among various forms of dataflow modeling, Synchronous Dataflow (SDF) is geared towards static scheduling of computational modules, which improves system performance and predictability. However, many DSP applications do not fully conform to the restrictions of SDF modeling. More general dataflow models, such as CAL (Eker and Janneck 2003), have been developed to describe dynamically-structured DSP applications. Such generalized models can express dynamically changing functionality, but lose the powerful static scheduling capabilities provided by SDF. This paper focuses on the detection of SDF-like regions in dynamic dataflow descriptions—in particular, in the generalized specification framework of CAL. This is an important step for applying static scheduling techniques within a dynamic dataflow framework. Our techniques combine the advantages of different dataflow languages and tools, including CAL (Eker and Janneck 2003), DIF (Hsu et al. 2005) and CAL2C (Roquier et al. 2008). In addition to detecting SDF-like regions, we apply existing SDF scheduling techniques to exploit the static properties of these regions within enclosing dynamic dataflow models. Furthermore, we propose an optimized approach for mapping SDF-like regions onto parallel processing platforms such as multi-core processors. VL - 63 SN - 1939-8018, 1939-8115 UR - http://link.springer.com/article/10.1007/s11265-009-0445-1 CP - 1 J1 - J Sign Process Syst ER -