Internal Error: Sub-system: SIN, File: /quartus/tsm/sin/sin_micro_tnodes_dag.cpp, Line: 978 - Internal Error: Sub-system: SIN, File: /quartus/tsm/sin/sin_micro_tnodes_dag.cpp, Line: 978 Description Due to a problem in the Intel® Quartus® Prime Pro Software version 17.1 and earlier, you may see this internal error when compiling an Intel Stratix® 10 project which contains an External Memory Interfaces Intel Stratix 10 FPGA IP and the following qsf assignment: set_global_assignment -name ENABLE_SMART_VOLTAGE_ID ON Internal Error: Sub-system: SIN, File: /quartus/tsm/sin/sin_micro_tnodes_dag.cpp, Line: 978 Problem encountered while reading the specified SIN_MICRO_TNODES_DAG from disk [17.1.2/304/linux64/quartus/common/devinfo/14nm/ddb_nadder_emif_fls_vid2] This internal error may also be seen when migrating a project to Quartus Prime Pro Software version 18.0. Resolution The ENABLE_SMART_VOLTAGE_ID assignment set to ON is not supported for Stratix 10 FPGA devices. Change the qsf assignment to set_global_assignment -name ENABLE_SMART_VOLTAGE_ID OFF Stratix 10 VID parameters are set up in Assignments > Device > Device and Pin Options > Power Management and VID In the Quartus Prime Pro Software version 18.0, the SmartVoltage ID setting is greyed out in Settings > Operating Settings and Conditions Custom Fields values: ['novalue'] Troubleshooting FB: 491441, 435903; False ['External Memory Interfaces Stratix® 10 FPGA IP'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 18.0 17.1 ['Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']