Creating an LEF using Abstract and importing gds2 into icfb

gds2 to lef

Hello All,


I am using the standard cell library obtained from Virginia Tech for
0.25micron technology. I can see layouts of all the cells in cadence
after adding the library in the LibMgr. They have also provided a gds2
file for this library with the package. When I try to import the gds2
into Abstract Generator (coming with Silicon ensemble) it gives errors
saying that the layouts of each of the cells in the standard cell
library are not valid DB objects. I was doing this step to create an
LEF to use with SE.
Does anybody know why this is happening? Is there a step I am missing
here?


Now they have also provided the LEF file for the library as well to use
directly with SE. I can succefully import the LEF and a sample verilog
netlist into SE, place cells, route them and do all the checks
successfully, however when I export the gds2 from SE and import it into
ICFB, I lose all the layer information. All the cells appear as boxes
with nothing in it. Basically there is no layout and the LSW shows no
layers. The Virginia Tech package contains all the necessary map files
for importing and exporting the gds in and out of ICFB and I am using
those. And we have the latest NCSU kit installed on our machines.


I would greatly appreciate if someone could please help me diagnose and
solve this problem.


Thanks,
Fazela