An issue has been found in Vivado 2014.2 where there is a 900ps difference between estimated and routed delays on a RAMB36->FDRE net.
Due to this issue the placement QoR is degraded in designs that have a RAMB36->FDRE path structure as the tool will not work as hard on other paths.
This Answer Record provides a Tactical Patch for the 2014.2 release to address this issue.
The Tactical Patch is in the attachment of this Answer Record.
This Tactical Patch is only compatible with Vivado 2014.2 on a Linux 64 bit OS.
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