layout sample in GDSII format ?

T

Tom Tseng

Guest
Hello, everyone,

I am doing some experiments on VLSI layouts.

The first step is to write a program that can read
GDSII layout format and display the geometry on
the screen. I have made it. However, right now I
need some layouts in GDSII format to test my
software.

Do you know how can I download or get some layout
samples? Large layouts would be great.

Thanks for your time and your help.

Best regards,
Tom
 
On Sat, 23 Apr 2005 14:48:38 +1000, Tom Tseng wrote:

Hello, everyone,

I am doing some experiments on VLSI layouts.

The first step is to write a program that can read
GDSII layout format and display the geometry on
the screen. I have made it. However, right now I
need some layouts in GDSII format to test my
software.

Do you know how can I download or get some layout
samples? Large layouts would be great.

Thanks for your time and your help.

Best regards,
Tom
Click to expand...
Tom,
I have also written a GDSII viewer that can load multi-GB files. It's a
lot of work to support everything in the GDSII format. What
language/graphics environment are you using? I've found that the best way
to search for layouts is through an FTP search engine such as
http://www.filesearching.com . I used to use AllTheWeb for FTP search,
but it seems like that site no longer supports FTP. Try searching for
*.gds, *.gds2, *.gdsII, and *.strm.

Frank
 
Dear Frank,

I have got some layout files via the search engine that
you provided. Many thanks.

The programing language that I'm using is Java. I chose it
because I can implement the software quickly. In addition,
the GUI and graphics are all included in Java, and I can
run the program on many different OS's without compiling
the source code again. However, my program only supports
limited record types. As you have said, it's a lot of work to
support all of them.

How about you? Which programming language are you using?

Again, thanks for helping me out.

Best regards,
Tom


Tom,
I have also written a GDSII viewer that can load multi-GB files. It's a
lot of work to support everything in the GDSII format. What
language/graphics environment are you using? I've found that the best way
to search for layouts is through an FTP search engine such as
http://www.filesearching.com . I used to use AllTheWeb for FTP search,
but it seems like that site no longer supports FTP. Try searching for
*.gds, *.gds2, *.gdsII, and *.strm.

Frank
Click to expand...
 
On Sat, 23 Apr 2005 20:19:14 +1000, Tom Tseng wrote:
I have written a complete suite of gds tools,
included an gds editor(with almost cadence virtuoso functionality), but
also a program to display 3d gds files :)
 
Tom,
I wrote my layout viewer in C++, using OpenGL/GLUT/GLUI for the graphics.
Java is great for writing a quick cross-platform program, but I needed
higher performance so that I could load large layouts. Mine is
cross-platform, assuming all of the required libraries are available. My
viewer supports all of the GDSII records with no limitations, but it was a
lot of work (~25K lines of code), and there are a lot of features. Most
existing tools use X for graphics, but as layouts get larger I believe
more and more tools will use something like OpenGL that utilizes the power
of today's high-performance graphics cards. Good luck with your project.

Frank


On Sat, 23 Apr 2005 20:19:14 +1000, Tom Tseng wrote:

Dear Frank,

I have got some layout files via the search engine that
you provided. Many thanks.

The programing language that I'm using is Java. I chose it
because I can implement the software quickly. In addition,
the GUI and graphics are all included in Java, and I can
run the program on many different OS's without compiling
the source code again. However, my program only supports
limited record types. As you have said, it's a lot of work to
support all of them.

How about you? Which programming language are you using?

Again, thanks for helping me out.

Best regards,
Tom


Tom,
I have also written a GDSII viewer that can load multi-GB files. It's a
lot of work to support everything in the GDSII format. What
language/graphics environment are you using? I've found that the best way
to search for layouts is through an FTP search engine such as
http://www.filesearching.com . I used to use AllTheWeb for FTP search,
but it seems like that site no longer supports FTP. Try searching for
*.gds, *.gds2, *.gdsII, and *.strm.

Frank
Click to expand...
 
Tom Tseng wrote:
Do you know how can I download or get some layout
samples? Large layouts would be great.
Click to expand...
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"Nothing I post to USENET should be misconstrued as official
statements!"
 
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