Answers Database


A1.5 Par - Design hangs in PAR after optimization.


Record #4626

Product Family: Software

Product Line: FPGA Implementation

Product Part: par

Problem Title:
A1.5 Par - Design hangs in PAR after optimization.


Problem Description:
A case has been seen where PAR hangs after optimization.
The problem is in the KPATHS timing algorithm which is
new for A1.5.


Solution 1:

The problem can be avoided by switching to the DFS timing
algorithm which was the default algorithm in A1.4.

setenv XILINX_GRAPHIMP DFS (workstations)
set XILINX_GRAPHIMP=DFS (PCs)

This problem was fixed for 1.5i.




End of Record #4626 - Last Modified: 04/30/99 12:02

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