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Altera_Forum's avatar
Altera_Forum
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10 years ago

Relaxing Data Dependencies on Memory Access

I'm trying to stream in a block of contiguous memory, but only process the date until an end marker is reached. Put simply, iterate through an array until a certain value is found, after which all fu...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

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The code has to wait for load to complete to know if write_channel_altera() should be done during the next iteration -- so that's your loop-carried dependency.

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But isn't that the case as well in the third code sample I gave. I don't get any timing issues there. Furthermore: when I comment out that part of the code as follows, the problem persists: 


//if(endmarker_reached) {
    write_channel_altera(chan, value);
 //}

As for the 15.1 compiler: Unfortunately I don't have a board support package for that yet.