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| hackerfoo | I found a new trick: make -j -l`nproc` all_xc7 | 00:39 |
|---|---|---|
| hackerfoo | It wasn't that after all. top_bram_n8 blows up after running for a very long time. It's up to 64GB and still running. | 01:07 |
| litghost | hackerfoo: There is a reason I disabled that code :) | 01:10 |
| hackerfoo | Maybe we can fix it, though. | 01:10 |
| hackerfoo | Now that I know where it fails. | 01:11 |
| litghost | hackerfoo: If you can show that high fanout nets are causing some of our performance issues (e.g. https://github.com/SymbiFlow/symbiflow-arch-defs/pull/1251#issuecomment-571705160 ), then that is helpful | 01:12 |
| tpb | Title: Zybo: Add minitest with Litex/Vex booting Linux by kgugala · Pull Request #1251 · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com) | 01:12 |
| hackerfoo | Okay. I'll do some more profiling. | 01:12 |
| hackerfoo | Wait, isn't that due to missing data? | 01:13 |
| litghost | I don't believe anyone actually tracked down the failure | 01:15 |
| litghost | We just know it takes a very long time | 01:15 |
| hackerfoo | Maybe I should just disable high fanout routing after the overused RR nodes goes under a threshold of 10. That's when it gets into trouble. | 01:18 |
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| hackerfoo | It seems to perform better at first, then get stuck. | 01:20 |
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| hackerfoo | Okay, now it works great, about 25% faster for top_bram_n8 | 01:46 |
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| litghost | hackerfoo: Nice | 03:58 |
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| sf-slack1 | <mkurc> I have a generic question about VPR: Can multiple CHANX (or CHANY) nodes at the same location and with the same length be connected with an edge? Will VPR complain about such rr graph or not? | 08:32 |
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| -_whitenotifier-3- [symbiflow-arch-defs] acomodi opened issue #1278: Combinatorial Loop after running fasm2bels - https://git.io/JvtDi | 09:39 | |
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| litghost | mkurc: Maybe? So we've disabled most of VPR's rr graph checking code because we violate some it's assumptions. That being said, the router and placer won't care, as a graph is a graph | 15:24 |
| litghost | mkurc: I make connections of that sort all the time | 15:24 |
| sf-slack1 | <mkurc> @litghost Ok, thanks. | 15:25 |
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