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DSPLink version is slower than Code Composer version, by a factor of 10(!)

Christopher Fury
Expert 1130 points


Hi folks,

I have a dsp application that runs in a loop and performs some number crunching.  When I build this application into a dsplink-integrated app on my linux host, I get a cycle time of around 500 microseconds.  When I take this code and build it as a DSP app (without DSPLink) it runs around 50 microseconds.  I'm running DSPBios/DspLink in task mode, and this app is the only task.  I have changed my compile flags to be the same as used in the code composer app, but no joy.

Any ideas where I should look?  I think the configuration of the DSP is screwed up in DSPLink, but I'm not sure how to change that.  I'm pretty new to tconf, so I'm just using stuff I pulled out of the dsplink samples.

Thanks,
Chris