stream-out & stream-in with techfile

Hi,

I have a technology file in which the techLayers() and streamLayers()
subclasses are defined as they should be (i think). When i do
Export->Stream of a given layout to a .gds file with this techfile (no
separate layer mapping table) and then Import->Stream of the same .gds
file (again with the techfile), the layer mapping doesn't seem to
behave as i expect it to... I know the GDS2 numbers in the .gds file
are correct after stream-out. But, at stream-in, these GDS2 numbers are
mapped to the internal Cadence numbers defined in techLayers() instead
of to those in streamLayers(). As such, the layout you see after
stream-in has totally incorrect layers... Why is this? Is
streamLayers() only intended for stream-out?

Thanks,
Gerd

 

Gerd:
Try creating a new library and attaching it to the technology first.
Then stream into that library.