HLS DATAFLOW & HLS stream ERROR: [XFORM 203-711]

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于 2020-01-09 14:15:32 发布 · 2.7k 阅读

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本文深入探讨了VivadoHLS在数据流优化方面的限制，特别是关于单生产者单消费者模型的遵守，以及如何避免数据流区域内的变量同时读写导致的问题。文章提供了具体的代码示例和修改建议，帮助读者理解和解决XFORM203-711和XFORM203-733错误。

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ERROR: [XFORM 203-711]

Description
The specified variable is both written to and read from. This violates the requirements for using the DATAFLOW directive, which supports only single-producer and single-consumer variable. The variable must only be read from or written to.
Explanation
The DATAFLOW directive allows functions and loops to consume data as soon as data is available from the producer, allowing task level pipelining where tasks can execute in parallel (each task does not have to complete all operations before the next task can begin).
All variables in a DATAFLOW region must operate in a single-producer single-consumer fashion: data must flow from one task to the next. If the coding style violates this policy, the DATAFLOW directive cannot implement task level pipelining.
Solution
Errors in use of the DATAFLOW d