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Adventurer
Adventurer
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Registered: ‎09-30-2019

error "internal stream in a non-daraflow region" ?

Error and source code below.

I get this error only outside the top function.

Why is that?

Note that the error is given for ALL streams in there.

Doing Emulation-HW in SDx

 

Xilinx SDx v2019.1.3 (64-bit)
SW Build 2644227 on Wed Sep 4 09:44:57 MDT 2019

 

ERROR: [XFORM 203-733] An internal stream 'myW8Streams.V.0' with default size is used in a non-dataflow region, which may result in deadlock. Please consider to resize the stream using the directive 'set_directive_stream' or the 'HLS stream' pragma.

 

typedef unsigned long long Word;

...

static hls::stream<Word> inStream;
static hls::stream<Word> myW4Streams[4], myW8Streams[2];

#pragma HLS DATAFLOW

readStreams(mem, numWords, inStream);
splitStream(inStream, numWords, myW4Streams);
compute1(myW4Streams[0], myW4Streams[1], numWords/2, myW8Streams[0]);
compute1(myW4Streams[2], myW4Streams[3], numWords/2, myW8Streams[1]);

...

 

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