CONT.gds

and

CONT.magic.gds

are the same (file size). Use

CONT.gds

.

Although it's a really good question why openlane generates redundant huge files, and why openlane isn't using GDS compression in magic long after I announced it was available.

I believe the klayout and magic files are XORed as kind of a sanity check, but the compression is a good point.

I think while push to repo we've have option to

make compress

so its by default compress all GDS files. But flow not compress by default.

Yes, I've asked for the compression to be done by default and the

make compress

/

make uncompress

to be removed, but it hasn't been done.