Should we use the

SKY130B

in the open_pdks for the June 17th tapeout even though we are not using ReRAM? @User Asking on behalf of the Stanford EE372 tapeout class.

The ChipIgnite runs are not using the ReRAM option, so please continue to use

sky130A

.

Got it. Thanks for the reply!

@User How can I build only

sky130A

then? I think by doing the

make pdk

both are built,

sky130A

and

sky130B

.

@User: Per the open_pdks installation instructions on the website: --with-sky130-variants= *all*|*A*|*B*

@User so the whole command is then `make pdk --with-sky130-variants=A`*?*

No, that's a configuration option.

I mean the

make pdk

when you setup OpenLane per this doc: https://github.com/The-OpenROAD-Project/OpenLane

That, I don't know. You'll have to ask the Openlane developers.

I just posted the question in the #openlane channel. I see that

all

is default. Maybe switching the default to

A

would be an option, as long as the ChipIgnite runs use only the

A

? --with-sky130-variants= *all*|*A*|*B* This configuration option restricts the generation and installation of PDKs to a specific variant. If only one of the variants will be used for design, then time to generate and install can be cut in half by ignoring the unused PDK variant. _Default value if not specified all