Re: [casper] How does one go about emphasizing timing over placement?

[Henry Chen]

Hi Randy,

If you edit the fast_runtime.opt file in the XPS_*_base directory,
you can add the -timing option under the Map section.

Thanks,
Henry

Andrew Martens wrote:

Hi Randy

The options used in mapping, place and route etc are found in fast_runtime.opt in the etc folder in the XPS_IBOB_base folder containing the EDK project created by the CASPER toolflow. You will find a bunch of options that you can play with here. Save the changes and then re-run the EDK/ISE/Bitgen step to run the ISE tools with the new options. I found that the existing options were quite well optimised for timing. The Xilinx documentation will provide info on the options to play with.

Good luck
Andrew

2008/10/1 Randy McCullough <rmccu...@nrao.edu <mailto:rmccu...@nrao.edu>>

    All,

    When reviewing the timing report of a failed build, the "Timing
    Improvement Wizard"
    nearly always suggests emphasizing TIMING over PLACEMENT using the
    "-t" option.

    Has anyone tried this?  If so, just how did you go about invoking
    the "-t" option under
    the umbrella of the bee_xps environment?  Are there certain
    configuration files that can
    be modified to accomplish this?

    Thanks,

    Randy McCullough
    NRAO, Green Bank