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Other CAD Tools >> Entry Tools >> How to stream multiple GDS cells into one library
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Message started by raymond_luo2003 on Mar 10^th, 2007, 9:34pm

Title: How to stream multiple GDS cells into one library
Post by raymond_luo2003 on Mar 10^th, 2007, 9:34pm

Hi, all,

Sorry I may post this topic in wrong place. I got one standard cell library from TSMC. The library has more than 200 small GDS,

INV1.gds
INV2.gds
...
NAND1.gds
...

I only know to stream in GDS into my library one by one in Cadence, but it will take very long time. Could anyone advise me how to stream many GDS in once??

Many thanks!!

Title: Re: How to stream multiple GDS cells into one libr
Post by Andrew Beckett on Apr 12^th, 2007, 1:52am

Write a script to do this.

First, create a template - fill in the values on the form, and save the template.

Then, with your script, loop over the files one by one, and create a new template with the input file name stuffed into the template at the right place (it's pretty obvious if you look at the file).

Then in the script, run "pipo strmin yourNewTemplate" - for each gds file.

It's pretty straightforward to do this...

Andrew.

Title: Re: How to stream multiple GDS cells into one libr
Post by LL on Apr 21^st, 2007, 12:08am

Andrew,

Correct me if I'm wrong but if you do not specify the topcell name, doesn't pipo streamin every cells in the gds? I think that will solve Raymond's problem.

cheers,
LL

Title: Re: How to stream multiple GDS cells into one libr
Post by krishnap on Apr 24^th, 2007, 3:04am

Hi LL ,

In this case each cell would be having its own coresponding gds.
Inorder to stream all the cells into the library all the gds fies need to be streamed In.
You are right, if the Top cell Layout contains instantiation of all the layouts to be streamed into the library.
In this case, when the top cell gds is streamed in all the lower hierarchy cells will be streamed into
the library.