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# openlane
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Tobias Strauch

05/11/2022, 5:52 PM
Hi OpenLane team, I have congestion problems (well who doesn't) mainly between SRAMs. Is it possible to define classical "do-not-place-areas" for cells ? If not, any plans to add it ? Thanks in advance, cheers, Tobias
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Vijayan Krishnan

05/12/2022, 5:48 AM
providing test case will helpful for debug. Try HALO/CHANNEL spacing around SRAM Macros
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Tobias Strauch

05/12/2022, 6:01 AM
Thank you for your reply. The question is not related to a bug. It is about a common P&R feature and a more general question. So therefore no testcase or debugging is needed. I assume that HALO/CHANNEL spacing is not relevant here, as it solves other problems. Thanks again.
@ OpenLane team, are "do-not-place-areas" for cells possible ? Thanks you in advance, Tobias
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Vijayan Krishnan

05/12/2022, 6:07 AM
P&R done by OpenROAD App. So please create your discussion here: https://github.com/The-OpenROAD-Project/OpenROAD/discussions
created here on behalf of you. https://github.com/The-OpenROAD-Project/OpenROAD/discussions/1851 .Please follow up. thanks