Xilinx' partition flow in ISE12.1
in [FPGA]
|
Prev: Last Call for Papers Reminder (extended): International Conference on Soft Computing and Applications ICSCA 2010
Next: Announcing AjarDSP - an open source VLIW DSP
From: Kate Kelley on 20 Jul 2010 14:00 Hey Sean, Sorry for the late post and my guess is you have either given up or figured out how to do this. Unroutes should not be happening by just adding Partitions. If you want to try again, you might want to look at the number of INFO and WARNING messages about constants on inputs and/or outputs and also the number of unconnected outputs. The goal for Partitions is to keep the implementation results regardless of changes outside of the Partition. For that reason, we do not optimize any constants or unusued outputs across the Partition boundary. Often, this can cause more logic resulting in lower QoR. Sometimes this can cause unroutes. We are looking at changing this in the future. If you don't think this is the issue, I would really like to see the design so we can improve our flow. The best way to do this is to file a webcase so we can look at it. The best documentation for the 12.1 flow is the HD Methodology Guide. It is located at http://www.xilinx.com/support/documentation/sw_manuals/xilinx12_1/Hierarchical_Design_Methodology_Guide.pdf. Thanks, Kate --------------------------------------- Posted through http://www.FPGARelated.com |