How to use DSPs in FINN? #888

Answered by fpjentzsch

MFJI asked this question in Q&A

MFJI
Sep 10, 2023

Hello everyone,

I would like to know how I can decide whether DSPs are used or not. Thank you.

Answered by fpjentzsch

Hi,

for the MatrixVectorActivation layer, you can set the resType attribute to "dsp": https://github.com/Xilinx/finn/blob/13313c293eb00d2eb88edcaf68386fdf52152aeb/src/finn/custom_op/fpgadataflow/matrixvectoractivation.py#L70C14-L70C21

This should instruct Vitis HLS to use DSPs for the MAC operations. A more efficient implementation is work-in-progress (#794).

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fpjentzsch
Oct 12, 2023
Collaborator

Hi,

for the MatrixVectorActivation layer, you can set the resType attribute to "dsp": https://github.com/Xilinx/finn/blob/13313c293eb00d2eb88edcaf68386fdf52152aeb/src/finn/custom_op/fpgadataflow/matrixvectoractivation.py#L70C14-L70C21

This should instruct Vitis HLS to use DSPs for the MAC operations. A more efficient implementation is work-in-progress (#794).

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Answer selected by auphelia

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