Thursday, 2019-02-21

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sf-slack<kgugala> good morning08:33
sf-slack<mgielda> morn'08:38
sf-slack<mkurc> good time of day ;P08:42
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sf-slack<acomodi> Good time of day! I was looking at the prepacker and the way the best_pattern is found. The issue with dram not working with should be due to the fact that the round robin policy is used also for non-carrychain patterns. This can lead to the alternate selection of DRAM128 and DRAM128_DP which will produce errors in the cluster_router step. I would suggest to11:49
sf-slackuse a mixed strategy with the usage of RR for carrychains and first-fit for the other patterns, what do you think?11:49
tpbTitle: [WIP] round robin packing by kgugala · Pull Request #9 · SymbiFlow/vtr-verilog-to-routing · GitHub (at
sf-slack<kgugala> this should be easy to implement - we can try this and see how it works11:50
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sf-slack<tmichalak> I updated the issue with handling slice_l and slice_r in the same CLB ( with my latest findings20:24
tpbTitle: Placer cannot handle slice_l and slice_r carry chains in the same CLB · Issue #8 · SymbiFlow/vtr-verilog-to-routing · GitHub (at
sf-slack<tmichalak> I am still not sure what is the exact root cause and how to fix it so any thoughts appreciated20:26
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