STA is very rudimentary, down to not even honoring timing constraints, yet alone accounting for clock tree skew

openXC7 / nextpnr-xilinx

Experimental flows using nextpnr for Xilinx devices

ISC License

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STA is very rudimentary, down to not even honoring timing constraints, yet alone accounting for clock tree skew #12

Open chili-chips-ba opened 1 year ago

chili-chips-ba commented 1 year ago

This is not forthcoming from the provided documentation and examples, and we had to uncover this major shortcoming indirectly, which does not contribute to openXC7 stated goal of "User friendliness uber alles". This also does not help the QOR -- We now understand the reluctance to conduct objective QOR comps to other open-source PnR tools (such as VPR), yet alone proprietary solutions.