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AR# 23477

PlanAhead 11.1 - PBlocks that were shown as < 100% utilized in PlanAhead are overmapped when implementing

描述

I used PlanAhead to create PBlocks for my design. PlanAhead showed all my PBlocks to be under 100% utilized, but when I run ISE Place and Route, one or more of my PBlocks is overmapped.

解决方案

PlanAhead gives pblock utilization based on post-synthesis estimation. While this is generally close to actual utilization, in some cases it may not be completely accurate. The map results are the definitive utilization results, so pblocks will need to be made bigger if they are overmapped.

AR# 23477
日期 12/15/2012
状态 Archive
Type 综合文章
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