| # how to get timing path information |
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| Tool: OpenSTA |
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| Subcategory: Usage question |
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| ## Conversation |
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| ### msingh9 |
| I am interested to find out my worst timing path. I can run following command to get path objects, but how do I get full report like start point, logic gates in between and end point.
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| openroad> find_timing_paths -from * -to * -group_count 10 -sort_by_slack
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| _d02fb74000000000_p_PathEnd _1005b54000000000_p_PathEnd _1040b44000000000_p_PathEnd _1006b54000000000_p_PathEnd _3071b64000000000_p_PathEnd _b0bfb54000000000_p_PathEnd _d0173d3f00000000_p_PathEnd _20cdb54000000000_p_PathEnd _9091bc4000000000_p_PathEnd _003db64000000000_p_PathEnd
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| ### maliberty |
| From the docs for find_timing_paths https://github.com/The-OpenROAD-Project/OpenSTA/blob/master/doc/OpenSTA.pdf
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| ```
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| Use the get_property function to access properties of the paths.
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| ```
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| ### msingh9 |
| Thank you very much for prompt response. This works fantastically. I wrote a small TCL function to nicely print complete timing path with the arrival time. Maybe, it will be helpful to someone.
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| ```
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| ### Document this ####
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| Usage: report_timing_paths <args>
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| Example: report_timing_paths -from * -to * -group_count 2 -sort_by_slack
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| proc report_timing_paths {args} {
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| set path_ends [sta::find_timing_paths_cmd "find_timing_paths" args]
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| set pathno 1
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| foreach path_end $path_ends {
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| set start_clock [get_property [get_property $path_end startpoint_clock] full_name]
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| set start_point [get_property [get_property $path_end startPoint] full_name]
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| set end_point [get_property [get_property $path_end endPoint] full_name]
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| set end_clock [get_property [get_property $path_end endpoint_clock] full_name]
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| set slack [get_property $path_end slack]
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| puts "Path ${pathno} : "
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| puts " [format "%-80s" $start_point], ${start_clock}"
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| set points [get_property $path_end points]
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| foreach point $points {
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| set arrival [get_property $point arrival]
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| set pin [get_property [get_property $point pin] full_name]
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| set cslack [get_property $point slack]
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| puts " [format "%-80s" $pin], $arrival"
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| }
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| puts " [format "%-80s" $end_point], ${end_clock}, [format "%.3f" $slack]"
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| incr pathno
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| puts ""
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| }
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| }
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| ``` |
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