03:18 <_whitenotifier-f> [sv-tests] zachjs opened issue #457: Bumping dependencies - https://git.io/Je6go

09:49 <_whitenotifier-f> [conda-packages] tgorochowik opened issue #59: Invalid packages versioning - https://git.io/Je6wi

13:10 <_whitenotifier-f> [sv-tests] MikePopoloski opened issue #458: Problem with the CI build's slang binary? - https://git.io/Je6i7

18:05 <_whitenotifier-f> [vtr-verilog-to-routing] litghost opened issue #327: Branch: length_bounded - https://git.io/Je69N

19:32 <mithro> vaughnbetz: Hi! Welcome to IRC :-)

20:14 <Xiretza> good evening, I haven't been able to find much up-to-date information on this, so I thought I'd ask here: broadly approximated, how far along is Project Xray? Is something like nextpnr integration for (partial) bitstream generation anywhere close or does it need a lot more work for that to happen?

20:15 <litghost> Xiretza: We can place and route on Artix 50T class parts

20:15 <litghost> e.g. basys3, arty, etc

20:15 <litghost> We support LUTs/FFs/LUT-RAMs/BRAMs/single ended ios

20:16 <litghost> PLL support is kind of working

20:16 <litghost> IOSERDES is actually being worked on

20:16 <litghost> differential IO is being worked on

20:16 <litghost> DSP support is early, we are missing many bits and lack P&R support

20:17 <litghost> P&R support is mostly being done via VPR in https://github.com/SymbiFlow/symbiflow-arch-defs

20:17 <tpb> Title: GitHub - SymbiFlow/symbiflow-arch-defs: FOSS architecture definitions of FPGA hardware useful for doing PnR device generation. (at github.com)

20:18 <litghost> There is also preliminary nextpnr fork using prjxray

20:19 <litghost> Larger class parts may work with symbiflow-arch-defs, but will likely consume an excessive amoung of RAM

20:20 <Xiretza> litghost: oh, nice! I had no idea it was that far already. I'd love to help (at least with fuzzing, anything else is a bit over my head), maybe I'll set up vivado 2017 on a build server some day ;)

20:20 <litghost> So we've started to get momentum on DSP bit definitions

20:21 <litghost> The next thing for DSP work is likely a minitest and determining how many unknown bits are left

20:21 <litghost> Here is an example minitest for OSERDES: https://github.com/SymbiFlow/prjxray/tree/master/minitests/oserdes

20:21 <tpb> Title: prjxray/minitests/oserdes at master · SymbiFlow/prjxray · GitHub (at github.com)

20:22 <litghost> We need something like that for DSP, which doubles as having two purposes

20:22 <litghost> It provides examples to test once we are ready to integrated into https://github.com/SymbiFlow/symbiflow-arch-defs

20:22 <tpb> Title: GitHub - SymbiFlow/symbiflow-arch-defs: FOSS architecture definitions of FPGA hardware useful for doing PnR device generation. (at github.com)

20:22 <litghost> It also shows how many unknown bits we have for using the DSP

20:25 <Xiretza> I read through the RTD docs, but there's still quite a leap from that to all the stuff that happens in the prjxray repo, most of which I can't make any sense of ;)

20:33 <Xiretza> add to that that I don't really know any verilog, and it becomes somewhat impossible to do much more than follow the quickstart guide. If I find the time and disk space I'll run some fuzzers though - are those designed as distributed computing so that anyone can run them to help the project, or more as tools for people who already know what they're doing?

21:16 <litghost> There is a CI for the fuzzers, so the full run doesn't need to be run be folks. Individual runs can be done on a single system without too many resources besides disk

22:16 <Xiretza> litghost: oh, so am I understanding correctly that running the fuzzers myself doesn't actually produce any more information, and what actually needs to be done is writing more fuzzers/expanding existing ones (which requires understanding the system instead of just some computing power)?

22:17 <litghost> Xiretza: Yep, that's it

22:17 <litghost> Here is an example: https://github.com/SymbiFlow/prjxray/pull/1080

22:17 <tpb> Title: DSP - Add Attribute Fuzzing by JakeMercer · Pull Request #1080 · SymbiFlow/prjxray · GitHub (at github.com)

22:23 <Xiretza> litghost: ah, that's unfortunate. I thought I might be able to help by just donating some resources, but this is way over my head and I'm afraid I don't have the time to try to read into it at the moment.