Low accuracy on FPGA

[shobhitt10]

Hello,
I tried generating bitstreams through cnn.tcl for mnist classification and mean single convolution:

There are no errors in the console apart from few critical clock skew warnings:

But, when I use the generated bitstreams, results are very poor:

• Mean Single convolution

• MNIST Classifcation - low FPGA accuracy

Please guide me what am I doing wrong. This is very crucial as I need to accelerate my own cnn for which I am using your work as a reference.

Thanks

[ZhaoqxCN]

The only reason I can imagine is that your clock frequency has been set too high, it should not be higher than 200MHz.

[shobhitt10]

Thanks for replying @ZhaoqxCN

The only reason I can imagine is that your clock frequency has been set too high, it should not be higher than 200MHz.

I checked the clock of zynq PS, it is set as 50MHz (range is 30-60) similar to what is there in PYNQ-CNN.

Any other hints?