Comments (8)
mithro
commented on May 7, 2024
@msaligane - In #37 you mentioned
The variable comes before the index:
But the example copied from your comment at #37 (comment) above has exactly that ordering of the output?
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msaligane
commented on May 7, 2024
That was the expected format that I pasted there (I know confusing..) @mithro
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mithro
commented on May 7, 2024
@msaligane What is the current format? The index coming before variable?
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msaligane
commented on May 7, 2024
@mithro Please look above:
What I pasted up here is the correct format:
lu_table_template ("del_1_7_7") {
variable_1 : "input_net_transition";
index_1("1, 2, 3, 4, 5, 6, 7");
variable_2 : "total_output_net_capacitance";
index_2("1, 2, 3, 4, 5, 6, 7");
Meaning that I am expecting variable before index. Maybe I can take a look at the code?
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kkiningh
commented on May 7, 2024
This is the suggested format for the lu_table_template group.
library (name_string) {
...
lu_table_template(name_string) {
variable_1 : value_enum ;
variable_2 : value_enum ;
variable_3 : value_enum ;
index_1 ("float, ..., float");
index_2 ("float, ..., float");
index_3 ("float, ..., float");
}
}
In other words, all variables should come before all indices. This seems to be true for the other groups with variables + indices I checked as well (e.g. normalized_driver_waveform)
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kkiningh
commented on May 7, 2024
Actually, looking closer it looks like the more general rule is: simple attributes first in alphabetical order (i.e. key : value pairs) and then complex attributes like index and values
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msaligane
commented on May 7, 2024
@mithro Did you address the normalized_driver_waveform ? Primetime is flagging this:
Error message:
Error: Line 24721, Cell 'sky130_fd_sc_hd__a311oi_2', The normalized_driver_waveform group with name 'ramp', has not been defined in the library. (LBDB-751)
This is in the current .lib:
normalized_driver_waveform ("driver_waveform_template") {
index_1("0.0100000000, 0.0230506000, 0.0531329000, 0.1224745000, 0.2823108000, 0.5000000000, 0.6507428000, 1.5000000000");
index_2("0.0000000000, 0.5000000000, 1.0000000000");
driver_waveform_name : "ramp";
values( "0.0000000000, 0.0083333333, 0.0166666670", \
"0.0000000000, 0.0192088180, 0.0384176350", \
"0.0000000000, 0.0442774400, 0.0885548810", \
"0.0000000000, 0.1020620700, 0.2041241500", \
"0.0000000000, 0.2352590100, 0.4705180100", \
"0.0000000000, 0.4166666700, 0.8333333300", \
"0.0000000000, 0.5422856800, 1.0845714000", \
"0.0000000000, 1.2500000000, 2.5000000000");
And this is how the normalized_driver_waveform should be defined:
normalized_driver_waveform(waveform_template_name) {
**driver_waveform_name** : string; /* Specifies the name of the driver
waveform table */
index_1 ("float…, float"); /* Specifies input net transition */
index_2 ("float…, float"); /* Specifies normalized voltage */
values ( "float…, float", \ /* Specifies the time in library units */
…, \
"float…, float");
}
You have to reorder this to match the doc description.
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mithro
commented on May 7, 2024
This sort order is currently defined at https://github.com/google/skywater-pdk/pull/34/files#diff-f9cb759bb20be5053e4a63e7e0b282d2R355-R372
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