Xilinx 8.2i manual Turns Engine Syntax, Turns Engine Input Files

Models: 8.2i

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Chapter 9: PAR

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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 mnodelist_file n#_of_iterations s#_of_iterations_to_save mapped_desgin.ncd output_directory.dir

mnodelist_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

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Development System Reference Guide

Page 188
Image 188
Xilinx 8.2i manual Turns Engine Syntax, Turns Engine Input Files