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sf-slack2 | <acomodi> litghost: done, opened a PR upstream with the required changes. https://github.com/verilog-to-routing/vtr-verilog-to-routing/pull/713 | 11:28 |
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tpb | Title: vpr: changed some VPR_THROW to VPR_ERROR by acomodi · Pull Request #713 · verilog-to-routing/vtr-verilog-to-routing · GitHub (at github.com) | 11:28 |
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sf-slack2 | <acomodi> litghost, @tmichalak, mithro: I am confident I have found a great amount of unknown bits. I need to create a minitest to prove it, but I believe that IN_FIFO and OUT_FIFO in the CMT_FIFO column is responsible for those bits | 17:47 |
litghost | acomodi: Great | 17:47 |
sf-slack2 | <tmichalak> Do we know the base address of this tile? | 17:49 |
sf-slack2 | <tmichalak> Do you mean large number of unknown bits in general or from Litex on Arty perspective? | 17:51 |
sf-slack2 | <acomodi> from the Litex on Arty perspective, but I still need to verify my theories actually | 17:54 |
sf-slack2 | <acomodi> Anyway no, we do not have the base address | 17:55 |
sf-slack2 | <tmichalak> Make sure to create an issue once you are certain | 18:04 |
sf-slack2 | <acomodi> Sure | 18:08 |
sf-slack2 | <butta> We are consistently having an issue where routing gets stuck and isn't able to resolve congestion around FAN_ALT5 resources. Is this something anyone has insight on or is there something we should try to diagnose this? | 18:23 |
sf-slack2 | <acomodi> @butta try to set the `--congested_routing_iteration_threshold 0.8` vpr option. It sets the router to solve highly congested nets after the number of iterations is above the treshold | 18:52 |
sf-slack2 | <acomodi> if you set your `max iteration number` to 500, with a treshold of 0.8 the highly-congested algorithm should be enabled at iteration 400 | 18:53 |
sf-slack2 | <butta> That didn't change anything | 19:01 |
sf-slack2 | <butta> It's still having the same congestion and doesn't seem to be spending a long time trying to resolve the congestion | 19:02 |
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litghost | butta: Can you file an issue with the relevant replication information? | 20:40 |
mithro | I have pushed an updated database + harness | 20:43 |
mithro | Lots of new bits! -> https://github.com/SymbiFlow/prjxray-db/commit/8bb6b84629659db128ee9364e9df121c3c7c3411 | 20:44 |
sf-slack2 | <butta> @litghost I'm not sure this would be particularly helpful because we have diverged quite a bit from the symbiflow ROI. These tests route when we allow the placer to choose IO locations, but refuse to route (because of congestion) when we fix the IO locations. | 21:08 |
litghost | Butta: if you help, please create a replicating test case | 21:09 |
litghost | *If you want help | 21:09 |
litghost | butta: Which symbiflow fork are you based off of? | 21:37 |
litghost | butta: E.g. last upstream commit | 21:37 |
sf-slack2 | <butta> @litghost 619a4356de8b11b83664826e8e9b78e9154d220b | 21:38 |
litghost | butta: Do try https://github.com/SymbiFlow/symbiflow-arch-defs/pull/849 , which improves the lookahead in the router a somewhat | 21:39 |
tpb | Title: Add segment and connection box annotations to routing graph. by litghost · Pull Request #849 · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com) | 21:39 |
hackerfoo | The import scripts have a lot of problems with duplicate site types, so I've decided to work on splitting the IO tiles vertically before proceeding further. | 23:47 |
hackerfoo | https://github.com/SymbiFlow/symbiflow-arch-defs/issues/881 | 23:59 |
tpb | Title: [xc7] add architecture definitions for IO tiles · Issue #881 · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com) | 23:59 |
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