Filter
Top Products
188 www.xilinx.com Development System Reference Guide
Chapter 9: PAR
R
As the jobs finish, the remaining jobs are started on the five nodes until all 10 jobs are
complete. Since each job takes approximately one hour, all 10 jobs complete in
approximately two hours.
Note:
You cannot determine the relative benefits of multiple placements by running the Turns
Engine with options that generate multiple placements, but do not route any of the placed designs
(the –r PAR option specifies no routing). The design score you receive is the same for each
placement. To get some indication of the quality of the placed designs, run the route with a minimum
router effort std (-rl std) in addition to the -ol high setting.
Turns Engine Syntax
The following is the PAR command line syntax to run the Turns Engine.
par –m
nodelist_file –n #_of_iterations –s #_of_iterations_to_save mapped_desgin.ncd
output_directory.dir
–m nodelist_file specifies the nodelist file for the Turns Engine run.
–n #_of_iterations specifies the number of place and route passes.
–s #_of_iterations_to_save saves only the best –s results.
mapped design.ncd is the input NCD file.
output_directory.dir is the directory where the best results (–s option) are saved. Files
include placed and routed NCD, summary timing reports (DLY), pinout files (PAD), and
log files (PAR).
Turns Engine Input Files
The following are the input files to the Turns Engine.
• NCD File—A mapped design.
• Nodelist file—A user-created ASCII file listing workstation names. The following is a
sample nodelist file:
# This is a comment
# Note: machines are accessed by Turns Engine
# from top to bottom
# Sparc 20 machines running Solaris
kirk
spock
mccoy
krusher
janeway
picard
# Sparc 10 machines running SunOS
michael
jermaine
marlon
tito
jackie