RoCC Area Utilization Report

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Jan T.

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Dec 8, 2023, 2:50:42 AM12/8/23
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Hi,

I was wondering what would be the best method to report the area utilization of a RoCC module. I couldn't find anything in the documentation.

I have found the Viviado project in firesim/deploy/results-build/[Design]/[...]/vivado_proj. In another thread, I found that there was supposed to be a reports folder which is not there for me. I opened the Vivado project and generated a utilization report but was unable to find my RoCC accelerator in the report.

Is there a way to get the utilization for the RoCC module? The other option would be to generate the core without the module and compare the results.

Thanks!
Jan

Paul Genssler

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Dec 8, 2023, 3:18:25 PM12/8/23
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Hi Jan,

In Vivado, you can generate a utilization report with hierarchy enabled, among other things (e.g., exclude a model). I recommend the check the user guide [1] and for automation/TCL commands the user guide 835 [2]. To integrate your custom utilization report commands into the Chipyard flow, you need to adapt the TCL script for the FPGA flow [3, not tested myself, but looks like the correct one).

Regards,
Paul

[1] https://docs.xilinx.com/r/en-US/ug906-vivado-design-analysis/Report-Utilization
[2] https://docs.xilinx.com/r/en-US/ug835-vivado-tcl-commands/report_utilization
[3] https://github.com/ucb-bar/chipyard/blob/f882280290b57642a4463ba9230b98c850b6a5c2/fpga/scripts/run_impl_bitstream.tcl#L49C7-L52C69

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Jan T.

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Dec 14, 2023, 2:17:32 AM12/14/23
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Hi Paul,

that works, thanks for your help!

Best,
Jan
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