| *** tpb has joined #symbiflow | 00:00 | |
| hackerfoo | I made an auto building script: https://github.com/HackerFoo/hackerfoo-go-functions/blob/master/functions/development#L88-L101 | 00:06 |
|---|---|---|
| tpb | Title: hackerfoo-go-functions/development at master · HackerFoo/hackerfoo-go-functions · GitHub (at github.com) | 00:06 |
| hackerfoo | `go auto BUILD_COMMAND` and it will watch all files in the git cache for changes and execute `BUILD_COMMAND` | 00:07 |
| *** benelson has quit IRC | 00:22 | |
| *** space_zealot has joined #symbiflow | 01:06 | |
| *** az0re has joined #symbiflow | 01:48 | |
| -_whitenotifier-3- [prjxray] litghost opened issue #1249: Poor BUFH placement from VPR - https://git.io/JvBKF | 01:53 | |
| *** citypw has joined #symbiflow | 02:33 | |
| *** benelson has joined #symbiflow | 02:40 | |
| *** benelson has quit IRC | 02:44 | |
| *** benelson has joined #symbiflow | 03:56 | |
| *** space_zealot has quit IRC | 04:24 | |
| *** OmniMancer has joined #symbiflow | 07:12 | |
| *** Bertl is now known as Bertl_zZ | 07:16 | |
| *** Vonter has quit IRC | 11:13 | |
| *** OmniMancer has quit IRC | 12:54 | |
| *** benelson has quit IRC | 13:56 | |
| *** killruana has quit IRC | 14:33 | |
| *** killruana has joined #symbiflow | 14:43 | |
| *** space_zealot has joined #symbiflow | 14:56 | |
| *** Bertl_zZ is now known as Bertl | 14:59 | |
| *** bjorkintosh has quit IRC | 15:25 | |
| *** Vonter has joined #symbiflow | 15:31 | |
| *** citypw has quit IRC | 16:02 | |
| *** benelson has joined #symbiflow | 16:07 | |
| *** celadon_ has quit IRC | 16:12 | |
| *** benelson has quit IRC | 16:12 | |
| *** ZipCPU has quit IRC | 16:13 | |
| *** celadon has joined #symbiflow | 16:15 | |
| *** space_zealot has quit IRC | 16:16 | |
| *** ZipCPU has joined #symbiflow | 16:23 | |
| *** az0re has quit IRC | 17:27 | |
| mithro | litghost: PTAL - https://github.com/SymbiFlow/prjxray-db/compare/master...mithro:master | 17:51 |
| tpb | Title: Comparing SymbiFlow:master...mithro:master · SymbiFlow/prjxray-db · GitHub (at github.com) | 17:51 |
| *** seraxis has quit IRC | 17:54 | |
| *** seraxis has joined #symbiflow | 17:55 | |
| litghost | Looking now | 17:57 |
| *** seraxis has quit IRC | 17:58 | |
| *** seraxis has joined #symbiflow | 17:59 | |
| litghost | Ya, that looks good. All the changes I expected are present. | 18:00 |
| litghost | daveshah: The missing zynq LIOB33 are fixed | 18:01 |
| litghost | ssb: xc7a35tftg256 package support should be in prjxray-db now | 18:02 |
| mithro | New database is pushed! https://github.com/SymbiFlow/prjxray-db | 18:13 |
| tpb | Title: GitHub - SymbiFlow/prjxray-db: Project X-Ray Database: XC7 Series (at github.com) | 18:13 |
| daveshah | litghost: thanks! | 18:26 |
| litghost | No problem, good catch BTW | 18:27 |
| litghost | The fixed fuzzer is more general anyways, so it was a good fix overall | 18:27 |
| litghost | daveshah: Is nextpnr-xilinx running with timing data yet? We ran into a bug in the timing model that is worth mentioning if so | 18:27 |
| daveshah | It is using parts of the xray timing data, but it is an approximation rather than a particularly proper model | 18:28 |
| daveshah | Would be worth knowing the bug for when I do a proper model though | 18:28 |
| litghost | The LV (long vertical wires) pips had previously has 0 delay, which made vertical wires look really cheap | 18:29 |
| litghost | For now we've copied the driver data from the LH (long horiz wires) which looks to be a good approximation, plus or minus the fact that some of the LV wire RC delay appears to be lumped into the delay constants | 18:30 |
| litghost | The solution we've choose for now is to only use 1-2 segments of RC delay when computing wire RC, see: https://github.com/SymbiFlow/symbiflow-arch-defs/pull/1324/files#diff-e658c18cfaaa5f0331a296dca98d1c3eR545 | 18:30 |
| tpb | Title: Add workaround for LV wire R/C values. by litghost · Pull Request #1324 · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com) | 18:30 |
| litghost | This works reasonable enough, good to about ~2-4% | 18:30 |
| litghost | Significantly better than LV wires being free | 18:31 |
| daveshah | Haha, that is almost part of the approximations in the nextpnr timing model anyway I think | 18:31 |
| litghost | Ok | 18:31 |
| *** az0re has joined #symbiflow | 18:31 | |
| daveshah | I need to do some proper comparisons at some point anyway (I want to compare against the new timing model in RapidWright too) | 18:32 |
| litghost | To be clear though, the RapidWright timing model is still an approximation of the Vivado timing model? | 18:32 |
| daveshah | Yes, although quite a different approximation by the looks of things | 18:32 |
| litghost | The arch-defs 7-series VPR timing model approximation is typically within <1% of the Vivado, expect when tl_buffer's are involved | 18:33 |
| litghost | It just happens to be that tl_buffers are used for LV wires, which I missed when I did the first comparisions | 18:34 |
| litghost | If you happen to figure out a better approximation for the pips that use the tl_buffer switch model, do tell | 18:34 |
| litghost | :) | 18:34 |
| daveshah | Ack, I was just looking at how Xray extracts the timing info the other day actually. Might try something like this for UltraScale to compare against RapidWright, too | 18:39 |
| litghost | Let us know how it goes | 18:42 |
| litghost | With prjuray starting up soon, the version of the 074 fuzzer will need that insight | 18:43 |
| litghost | I'm crossing my finger the most of the work done on the arch-defs 7-series timing model will apply directly to the US model | 18:43 |
| litghost | Save a lot of grief | 18:43 |
| -_whitenotifier-3- [symbiflow-arch-defs] litghost opened issue #1326: LV timing model workaround - https://git.io/JvRke | 19:02 | |
| *** ansh has joined #symbiflow | 19:16 | |
| *** space_zealot has joined #symbiflow | 19:31 | |
| ssb | litghost, thanks! Will after vacation | 19:39 |
| -_whitenotifier-3- [symbiflow-arch-defs] litghost opened issue #1328: Poor BUFH placement from VPR - https://git.io/JvRIl | 19:57 | |
| -_whitenotifier-3- [conda-packages] mithro opened issue #75: Convert conda-tag-filter.sh into a conda-build-prepare Python script - https://git.io/JvRqs | 21:33 | |
| *** heijligen has quit IRC | 22:41 | |
| *** heijligen has joined #symbiflow | 22:43 | |
| *** space_zealot has quit IRC | 22:51 | |
| -_whitenotifier-3- [symbiflow-arch-defs] litghost opened issue #1329: Integrate vivado timing analysis parser to xc7 vendor CI - https://git.io/JvROl | 23:11 | |
| *** nonlinear has quit IRC | 23:38 | |
| *** space_zealot has joined #symbiflow | 23:59 | |
Generated by irclog2html.py 2.13.1 by Marius Gedminas - find it at mg.pov.lt!