Fatal Error: Segment Violation: faulting address=(nil), PC=0x7fffef9076bc : 0x7fffef9076bc: db_cdb_sgate!CDB_SGATE_NODE::get_string_hpath(std::__cxx11::basic_string, std::allocator

Due to a problem in the Quartus® Prime Pro Edition Software version 24.2. You will see the Internal Error (IE) shown above when using the inference-flow for Tensor-Mode DSPs with RTL that has too many pipeline stages between the result of the intermediate multipliers and their column addition, but otherwise has the correct structure for a tensor-mode DSPs.

An IE will be observed during the Quartus® Prime Pro synthesis operation.

Fix the RTL to match the actual tensor mode operation, refer to the templates that are included in the Quartus® Prime Pro Edition Software, as shown below: