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Maikkk
Observer
Observer
244 Views
Registered: ‎04-15-2020

how to get critical path of my IP

Hi!

I generated an IP block with the vivado HLS, run synthesis at 5ns period, and in the synthesis I get 4.231ns estimated. This is not the critical path, is it?

Once I added to a Vivado project, I need to add the zynq a DMA in order to connect my IP, but I would like to know JUST the highest frequency my IP can achieve.Connecting the Zynq and the AXI interconnect I guess that I get lower WNS values.

 

How can I do that? 

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nithink
Xilinx Employee
Xilinx Employee
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Registered: ‎09-04-2017

@Maikkk   You can run your IP till place and Route. That will report the Slack that is achieved for the IP. Based on the requirement and the slack you can compute what is the max that can be achieved.

when you generate IP using HLS, it will be set to OOC, so you can run till place and route as a standalone IP

Thanks,

Nithin

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Maikkk
Observer
Observer
232 Views
Registered: ‎04-15-2020

@nithink what's OOC? I am very new to vivado HLS

 

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joancab
Scholar
Scholar
228 Views
Registered: ‎05-11-2015

 

OOC = out of context. That's not HLS, that's a Vivado concept. It means kind of bottom up.

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