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Cdb creation using make_cdb 7.1

NigH

I get a fatal error just after  Characterizing the first cell, the exact point is shown below:

############################################# 

Total number of transistors   : 39
Total number of logical nets  : 13

INFO:(SI-6029) Starting CCC port identification               [ccc_find_ports]
INFO:(SI-6029) Starting noise graph creation                             [ngr]
INFO:(SI-6000) There are 0 untouched CCC in the noise graph     [ngrGenerate2]
INFO:(SI-6000) Sorted noise graph has 9 elements.                        [ngr]
INFO:(SI-9556) Finished with process_netlist command         [process_netlist]
process_constraint: Finished in 0 seconds
Assertion `_r >= 0.0' failed
cmfatal: ERROR: Stopped in file resrdx.cxx line 210
ERROR:(E_FATAL_ERROR) The program has a fatal error and is being terminated.
    Fix the ERROR and WARNING messages in the log file and re-run    [cmfatal]
ERROR:(SI-0515) Internal Error : Cannot continue execution .. exiting [make_cdb]

#############################################

Can anyone tell me why this is occuring? The resrdx.cxx is not accessable in my local area, is this an internal file that is deleted after make_cdb exits?

 Thanks in advance.

  • Kari

     Unfortunately, this message is not giving us many clues to debug the issue. Can you post your make_cdb script? Did you try make_cdb -64?

  • NigH

    This is my make_cdb script and I have not tried the 64 bit verson. 

    set_supply -vdd 1.8
    set_supply -gnd 0.0
    #######################
    # Typ
    set parm_tmpdir .
    message_handler -set_msg_level ALL
    read_dotlib ../../../../../../pdk/*/synopsys/stdcells/synopsys/models/tsl18fs120_typ.lib
    generate_cell_lib -all -file_list tsl18fs120.spc -file tsl18fs120_typ.cdb -vdd VDD -gnd VSS -text

  • NigH

    I have just ran the 64 bit version of make_cdb and it fails the exact same way as the 32 bit version. 

  • Kari

     Instead of using -all in generate_cell_lib, use the -cell_list parameter and list out the cells you're trying to characterize.

  • NigH

     Found the issue, its a bug within the 7.1 and earlier versions of 8.1. I update to the lastest version and its working fine now.

    Thanks for all your help.

     

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