AutoCAD 2011 micron circle array

I have to built several mask design for lithographic purpose.

circle 1 micron diameters space 3 micron over an area 1cm by 1 cm.

so i have normally at the end approximately 30000000 circles.

I cannot make it over the entire area by coping it because AutoCAD 2011 run out of memory.

I tried to optimize for best performance but still having fatal error and crashing.

I also tried using block and array but it is not sufficient too.

My specificity:XP pro version 2002 service pack 3

intel® core™ 2 duo cpu

E8400 @ 3.00GHz

2.99GHz, 1.94GB of RAM

thanks for your help.

Fab

30 million circles:o

And you are suprised that you are running out of memory?

So what can I do to built it, I mean he has to be possible!

I think that you have hit an internal Autocad limit.

Just for a go I tried to set up an array 5477 x 5477 circles. (just under 30million).

Autocad reported that that would exceed the limit of 100000 objects, what does yours say if you try it?

For a litho mask, you may need to draw several dozen of them with ACCURATE overlay register marks.

For just a drawing, standard drafting practice would be to indicate the size and spacing of the whole hole array, and just draw a few circles around the edges and in corners. I can't imagine a need to draw the entire array. Is your QA department gonna check all of them?

Back in the day, this is the reason you would never see a draftsman draw all the bricks in a front elevation of a house, on paper.