This paper presents a simulation-based environment for verification of static task scheduling methodology in time predictable system. Different types processed tasks are distinguished and presented unified system design consisting the selection real configuration, mapping, scheduling, generation sequence identifiers to control interleaved pipeline. An original Worst Case Timing Analyzer (WCTA) ...

Task pipelines are common in today’s embedded systems, as data moves from source to sink sensing-processing-actuation task chains. A real-time pipeline is constructed by connecting a series of periodic tasks with buffers. In time-critical system, end-to-end timing and data-transfer properties must be guaranteed. guarantee could mathematically expressed assigning constraints the pipeline. Howeve...

this paper presents a k- turbulence model for simulation of steady current and itsinduced vortex shedding caused by the presence of an offshore pipeline. performance of the modelaround a circular cylinder above a wall with gap to diameter ratios of 0.1, 0.35 and 0.5 underdifferent flow regimes with reynolds numbers of 1500, 2500 and 7000 is studied. the flow field iscomputed with solving the re...

Pipeline depths in high performance dynamically scheduled microprocessors are increasing steadily. In addition, level 1 caches are shrinking to meet latency constraints but more levels of cache are being added to mitigate this performance impact. Moreover, the growing schedule-toexecute-window of deeply pipelined processors has required the use of speculative scheduling techniques. When these e...

Architectural features such as pipelines, instructions that use registers implicitly, and instructions that can be executed on any of several types of functional units require a tightly integrated instruction scheduler and register allocator. Such an integrated system can detect the interactions between the various problems that must be solved and therefore improve the use of available resource...

This paper presents a new view on software pipelining, in which we consider software pipelining as an instruction level transformation from a vector of one-dimension to a matrix of two-dimensions. Thus, the software pipelining problem can be naturally decomposed into two subproblems, one is to determine the row-numbers of operations in the matrix and another is to determine the column-numbers. ...

In this paper, we present data threaded execution, a new strategy to exploit both, pipelining and intra-operator parallelism in shared-everything environments. Data threaded execution is intuitive, straightforward to implement, but resistant against workload estimation errors and resistant against the discretization error of processor scheduling, that conventional strategies suuer from. Further...

In this paper, we present data threaded execution, a new strategy to exploit pipelining and intra-operator parallelism in a shared-everything environment. Data threaded execution does neither suuer from execution skew caused by workload estimation errors, nor from the discretization error of processor scheduling as it appears in conventional strategies. Further more, data threaded execution avo...