Internal Error: Sub-system: VPR20KMAIN, File: /quartus/fitter/vpr20k/vpr_common/vpr_u

[Altera_Forum]

I get this error at 47% every time I try to compile: 

 Internal Error: Sub-system: VPR20KMAIN, File: /quartus/fitter/vpr20k/vpr_common/vpr_utils.c, Line: 1405 Internal Error Stack Trace: 0x2673ac: _vpr_qi_jump_to_exit + 0x6c (fitter_vpr20kmain) 0x8d956: _vpr_exit_at_line + 0x86 (fitter_vpr20kmain) 0x8d9a5: _handle_assertion_failure_stripped + 0x25 (fitter_vpr20kmain) 0xecc60: _placement_unset_block_location + 0x80 (fitter_vpr20kmain) 0xc0888: _pl_initial_release_flr_resources + 0x2e8 (fitter_vpr20kmain) 0xc052a: _pl_initial_place_remaining_unplaced_blocks_or_flrs + 0xc8a (fitter_vpr20kmain) 0xbfe36: _pl_initial_place_remaining_unplaced_blocks_or_flrs + 0x596 (fitter_vpr20kmain) 0xc64d1: _l_approximate_block_size + 0x5a1 (fitter_vpr20kmain) 0xc475c: _pl_flr_initial_place_flr_in_region + 0x13c (fitter_vpr20kmain) 0xc04a4: _pl_initial_place_remaining_unplaced_blocks_or_flrs + 0xc04 (fitter_vpr20kmain) 0xbfb48: _pl_initial_place_remaining_unplaced_blocks_or_flrs + 0x2a8 (fitter_vpr20kmain) 0xbc9f6: _pl_initial_placement + 0x156 (fitter_vpr20kmain) 0x160ab3: _aa_pl_ini_float + 0x7b3 (fitter_vpr20kmain) 0x15ef1f: _aa_try_place + 0x9f (fitter_vpr20kmain) 0x980f8: _try_place + 0x148 (fitter_vpr20kmain) 0x1369bf: _aa_flow_get_fit_attempt_string + 0x79f (fitter_vpr20kmain) 0x135dd0: _aa_flow_fit + 0xc0 (fitter_vpr20kmain) 0x8b8a9: _vpr_main_internal + 0x399 (fitter_vpr20kmain) 0x2672ae: VPR_QI_FACADE::vpr_qi_main + 0x12e (fitter_vpr20kmain) 0x2a552: _fitapi_run_vpr + 0x72 (fitter_fitapi) 0x3763d: FITCC_EXPERT::run_vpr + 0x11d (FITTER_FITCC) 0x388dc: FITCC_EXPERT::place_and_route + 0x13c (FITTER_FITCC) 0x39ae8: FITCC_EXPERT::invoke_fitter + 0x6a8 (FITTER_FITCC) 0x37d6: _fcuda_execute + 0x1c6 (fitter_fcuda) 0x9940: fmain_start + 0x710 (FITTER_FMAIN) 0x741c: qfit_execute_fit + 0x19c (quartus_fit) 0x11a95: QFIT_FRAMEWORK::execute + 0x4b5 (quartus_fit) 0xd9e1: qexe_get_tcl_sub_option + 0x981 (comp_qexe) 0x10287: qexe_process_cmdline_arguments + 0x387 (comp_qexe) 0x10374: qexe_standard_main + 0x84 (comp_qexe) 0xb79e: qfit_main + 0x5e (quartus_fit) 0x1ce1: msg_main_thread + 0x11 (CCL_MSG) 0x1bc8: _thr_final_wrapper + 0x8 (ccl_thr) 0x1c55: msg_thread_wrapper + 0x85 (CCL_MSG) 0x6720: mem_thread_wrapper + 0x32 (ccl_mem) 0x2c423: msg_exe_main + 0x63 (CCL_MSG) 0xbc3c: _main + 0x1c (quartus_fit) 0x13afb: _memset + 0x15f (quartus_fit) 0x16fd6: RegisterWaitForInputIdle + 0x48 (kernel32)  End-trace  Quartus II Version 10.1 Build 153 11/29/2010 SJ Full Version

[Altera_Forum]

I was able to get past this problem by deleting all of my partitions but I don't think I should have to do that to build a sof file

[Altera_Forum]

Hi kboehme, sorry you've hit this problem. I suspect that if you lock down your floating regions (instead of simply deleting all of your partitions) you should be able to get around this. 

 If you're willing to file a service request at http://altera.com and attach a QAR file of your design, it would help us try to track this down.  Thanks, Adrian

[Altera_Forum]

Hi kboehme, just an update - I've entered this IE into our internal bug tracking system, but without a testcase it will be difficult for us to reproduce and fix it. If you can submit a service request with a QAR file at altera.com I'd appreciate it. 

 Thanks, Adrian