Hello <@U016EM8L91B> <@U016HSAA3RQ> <@U017X0NM2E7>...
# ieee-sscs-dc-22
j
Hello @Tim Edwards @jeffdi @Mitch Bailey, we are trying to do the online precheck on a version that tackles the FOM density error we get at tapeout. We tried several times but we get the attached message regarding the consistency check (it says it's not finding the analog wrapper within the caravel) and the job stops with an exception. We checked the gds file and it seems to be fine. The strange thing is that we re-submit the design we used before to pass the precheck and we get the same error. We can't find out the source of the error, your advice would be really appreciated. cc @Alfonso Cortés
@StefanCK seems to have the same issue
a
Same here
& possibly @Adil Malik?
t
@jeffdi: When the precheck says "Module user_analog_project_wrapper isn't instantiated in caravan", exactly what file is being checked?
@Jorge Marin: In mpw_precheck under
checks/consistency_check/netlist_checker
, this is the procedure
check_hierarchy
. This checks either a
.v
or a
.spice
netlist. I'm not sure whether it's always
.v
for caravel and
.spice
for caravan, or whether you get to choose somewhere in the configuration, but the point is you need to provide a netlist, and that netlist has to define the user project wrapper (
user_analog_project_wrapper
in this case). It is not referring to the GDS.
m
Can anyone with this problem post their repo? And just to be clear, the design passes the local precheck, but not the efabless precheck, right?
a
whatever it was, seems to be solved now. I do get an error in consistency though - I'll do a separate thread for that
j
Hello @Tim Edwards and @Mitch Bailey, thanks for the feedback. As in @Andrea Mifsud’s case, we got the previous check error solved, but now we have the one I'm attaching (in a design that passed precheck one week ago). @Alfonso Cortés maybe you can provide more feedback on this?
👍 1
This is our project, by the way: https://platform.efabless.com/projects/1427
m
Thanks @Jorge Marin I’ve reported the problem. They’re working on re-extracting the golden caravan.
j
thanks a lot, @Mitch Bailey