Wednesday, 2022-09-14

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F4PGASlackBridge<ept> Has anyone compared PnR times of VPR vs NextPnR for Xilinx parts?03:51
F4PGASlackBridge<ept> (If not, I may run some tests and post my findings)03:52
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F4PGASlackBridge<kgugala> there is https://github.com/chipsalliance/fpga-tool-perf  doing the tests daily (it presents the results in github pages)07:36
F4PGASlackBridge<kgugala> https://chipsalliance.github.io/fpga-tool-perf/07:36
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F4PGASlackBridge<umartinezcorral> @carlosedp SymbiFlow is now F4PGA. Do s/symbiflow/f4pga/ in the image names.09:50
F4PGASlackBridge<umartinezcorral> gcr.io/hdl-containers/conda/f4pga/...09:51
F4PGASlackBridge<umartinezcorral> https://github.com/hdl/packages/commit/aef52555f4b5a73efc55c9335162363879a3537809:53
F4PGASlackBridge<umartinezcorral> @nishantpani95 AFAIAA Lattice devices are not supported/tested on F4PGA repositories yet. chipsalliance/f4pga and chipsalliance/f4pga-examples contain designs for Xilinx and Quiclogic only for now. There is some Lattice related content in f4pga-arch-defs, but I think it's not meant for end-users.09:58
F4PGASlackBridge<umartinezcorral> https://github.com/chipsalliance/f4pga/pull/58509:59
F4PGASlackBridge<umartinezcorral> Nevertheless, the same tools/flow you use for ULX3S should also work for the ButterStick. I assume you are using Yosys + nextpnr-ecp5.10:00
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F4PGASlackBridge<carlosedp> My bad @umartinezcorralā€¦ I should have looked at https://hdl.github.io/containers/ToolsAndImages.html ā€¦ worked perfectly!13:57
F4PGASlackBridge<carlosedp> Thanks :)13:57
F4PGASlackBridge<umartinezcorral> https://f4pga.readthedocs.io/en/latest/development/changes.html, but I did not have time to focus on that yet.14:11
F4PGASlackBridge<umartinezcorral> Nonetheless, we did most of the breaking changes during the last 1-2 months, so we don't expect breaks in the short future.14:11
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F4PGASlackBridge<nishantpani95> Interesting then the landing page of F4PGA should be changed to reflect that. Right now it says Lattice devices are supported15:19
F4PGASlackBridge<carlosedp> sweet.. I need to go back testing my changes to work with Kintex7 :)15:34
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F4PGASlackBridge<ept> The runtime difference between VPR and nextpnr is striking.19:23
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