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AR# 12951

4.1i Virtex-E/Virtex-II PAR - The final placer score is higher than the initial placer score

Description

Keywords: place, placer, PAR, score, higher

Urgency: Standard

General Description:
My final placer score is higher than the initial placer score:

Starting the placer. REAL time: 42 secs
Placement pass 1 ........................
Placer score = 2291880
Placement pass 2 .........
Placer score = 6387651
Placement pass 3 ........
Placer score = 5410795
Placement pass 4 .........
Placer score = 5722214
Placement pass 5
............................................................................
Placer score = 5675885
Placement pass 6 .................
Placer score = 5674729
Optimizing ...
Placer score = 4474361
Placer score = 4370105
Placer score = 4296171
Placer score = 4234253
Placer score = 4181379
Placer score = 4135508
Placer score = 4091603
Placer score = 4050779
Placer score = 3999514
Placer score = 3968610
Placer score = 3936528
Placer score = 3912921
Placer score = 3892010
Placer score = 3872399
Placer score = 3853554
Placer score = 3837458
Placer score = 3824091
Placer score = 3807782
Placer score = 3794433
Placer score = 3781723
Placer score = 3770823
Placer score = 3761232
Placer score = 3751735
Placer score = 3744859
Placer score = 3738448
Placer score = 3733475
Placer score = 3728082
Placer score = 3723677
Placer score = 3720912
Placer score = 3717870
Placer score = 3716278
Placer score = 3713930
Placer score = 3711823
Placer score = 3711000
Placer score = 3710667
Placer stage completed in real time: 16 mins 25 secs

Solution

The placement score is calculated using a scoring function that varies with different placement passes; if the final placement score is higher than the initial placement score, this is not an indication of a poor final placement solution.
AR# 12951
Date Created 08/29/2007
Last Updated 10/20/2008
Status Archive
Type General Article