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AR# 10868

3.1i Virtex-II - PAR runs out of memory on Virtex-II designs with area groups.


Keywords: PAR, placer, placement, memory, area groups

Urgency: Standard

General Description:
A case has been seen where the placer ran out of memory on a very large
Virtex-II design when area groups were used. The error message posted was:

"ERROR:Portability:3 - This Xilinx application has run out of memory ..."


This problem is fixed in the latest 3.1i Service Pack available at:
http://support.xilinx.com/support/techsup/sw_updates. The first
service pack containing the fix is 3.1i Service Pack 7.

It was found that the placer was using more memory to process area
groups than was necessary. The fix reduces memory usage from
~6 Gb to ~1.6 Gb.
AR# 10868
Date Created 08/29/2007
Last Updated 10/21/2008
Status Archive
Type General Article