Magma TCL scripting problem - violating path

[syed_dawood]

Hi All,

I am a new to user of magma and I need some help regarding scripting.

How do I get a list of cells in the violating path ( specifically data path ) ? So that I can replace them with a different down-model of any type ??
Is there any way of doing this ?

Thanks,
Syed

 

[jeevan.life]

You can use the points attribute to query the cells in the timing path.

set list_points "" ; set list_cells ""
set f [get_timing_path -to <> -from <> ]
foreach_in_collection e $f {
set e [get_attr $e points]
foreach_in_collection m $e {
lappend list_points [get_object_name $m ]
}
}
foreach n $list_points {
set n [get_cell -of $n]
lappend list_cells [get_object_name $n]
}
echo $list_cells


This should give you all the cells in the timing path.

 

[syed_dawood]

You can use the points attribute to query the cells in the timing path.

set list_points "" ; set list_cells ""
set f [get_timing_path -to <> -from <> ]
foreach_in_collection e $f {
set e [get_attr $e points]
foreach_in_collection m $e {
lappend list_points [get_object_name $m ]
}
}
foreach n $list_points {
set n [get_cell -of $n]
lappend list_cells [get_object_name $n]
}
echo $list_cells


This should give you all the cells in the timing path.

Thanks for your help.
I had certain queries the above tcl gives you the list of all the cells only if you specify the start and end points right ?

 

[jeevan.life]

yes but you can use - max_path and -slack_lesser_than 0 option in the get_timing_path command to get all the violating paths.You will have to slightly modify the script to dump start point and endpoint and redirect the output to a file.

 

[kirangu]

Please provide the same with the modifications to get start point and end point. I have been looking for it

 

[jeevan.life]

Please provide the same with the modifications to get start point and end point. I have been looking for it

set list_points "" ; set list_cells ""
echo " list of cells in violating paths" > file.rpt
set f [ get_timing_paths -path_type summary -max_paths 10000 -slack_lesser_than 0 ]

foreach_in_collection e $f {
set list_points "" ; set list_cells ""
set e [get_attr $e points]
set strt [get_attr $e startpoint]
set end [get_attr $e endpoint]
set slk [get_attr $e slack]
foreach_in_collection m $e {
lappend list_points [get_object_name $m ]
}

echo "start point: $strt \n end point $end \n slack $slk \n" >> file.rpt
foreach l $list_points {
echo $l >> file.rpt
}
foreach n $list_points {
set n [get_cell -of $n]
lappend list_cells [get_object_name $n]
}
echo " cells in this path are: \n"
foreach l $list_cells {
echo $l >> file.rpt
}
}
This should give you a text file named "file.rpt" with all the data you need.

 

[kirangu]

Thanks a lot