Answers Database


2.1i Par:placement pass 2 FATAL_ERROR:Utilities:basagconjgradient.c:202:1.1.4.2 - CG SOLVER: residual after solving


Record #7503

Product Family: Software

Product Line: FPGA Implementation

Product Part: par

Product Version: 2.1i

Problem Title:

2.1i Par:placement pass 2 FATAL_ERROR:Utilities:basagconjgradient.c:202:1.1.4.2 - CG SOLVER: residual after solving



Problem Description:
Urgency: Standard

General Description:
Cases have been seen where running par using 2.1i fails with the error message:

FATAL_ERROR:Utilities:basagconjgradient.c:202:1.1.4.2
- CG SOLVER: residual after solving > residual before solving.
Process will terminate. To resolve this error, please consult the
Answers Database at http://support.xilinx.com

This problem has been determined to be due to a bug in a placement algorithm
that only fails for simple test cases with either very few components, or very few unconstrained components.


Solution 1:


This problem is scheduled to be fixed in the next major release (as
yet unnamed) following version 2.1i.




End of Record #7503 - Last Modified: 11/01/99 18:43

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