Mapping Solution Not Found - 2021.2 English

Versal ACAP AI Engine Programming Environment User Guide (UG1076)

Document ID
UG1076
ft:locale
English (United States)
Release Date
2021-12-17
Version
2021.2 English

Mapper failures typically have two modes. Either the failure happens during a pre-check phase or it might happen during the actual mapping phase.

Pre-check failures have explicit error messages which point to exact reason for failure, as shown in the following example.

ERROR: [aiecompiler 47-772] Inst g.kernel_a is in conflicting pblocks:(0,0) (5,5) and (20,0) (25,5).

You can trace such errors to the design element or the constraints.

Mapping phase failures typically have an error message that looks like the following.

ERROR: [aiecompiler 47-51] AIE Mapper failed to find a legal solution. Please try to relax constraints and/or try alternate strategies like disableFloorplanning.

In this case, use the following steps to either narrow down the cause of the failure if it is design-related or help the tool to find a solution if the failure is tool-related.