hsim error:Error: Fail to factorize the matrix, error 3, ccbsim.c(2025)

hsim 仿真是遇到的问题。同样的testbench hspice 仿真没有问题。

Total # of print variables               : 1422
Total # of voltage print variables       : 1422
End of matrix setup, CPU time used: 0.00 sec (0.00 sec wall)
Memory usage Physical: 45 MB, Virtual: 90 MB
Warning: node "xi0.vinm" has only 1 connection
Warning: node "xi0.vinp" has only 1 connection
Warning: node "xi0.xi34.xi0.ibsnk1u<13>" has only 1 connection
Warning: node "xi0.xi34.xi0.ibsrc1u<0>" has only 1 connection
Warning: node "xi0.xi34.xi0.ibsrc1u_con<1>" has only 1 connection
Warning: node "xi0.xi34.xi0.xi13.xi0.net0252" has only 1 connection
Warning: node "xi0.xi34.xi0.xi15.xi1.net0147" has only 1 connection
Warning: node "xi0.xi34.xi0.xi15.xi21.net0131" has only 1 connection
Warning: node "xi0.xi34.xi0.xi15.xi21.net0162" has only 1 connection
Warning: node "xi0.xi34.xi0.vssa" has no DC path to ground
Warning: node "xi0.xi34.xi0.vdda" has no DC path to ground
Warning: node "xi0.xi34.xi0.xi23.xi3.net0125" has only 1 connection
Warning: node "xi0.xi34.xi0.xi23.xi3.net0108" has only 1 connection
Warning: node "clk_ext" has only 1 connection
Warning: node "xi0.disagc" has only 1 connection
Warning: node "xi0.xi34.xi0.net439" has no connection
Warning: 16 nodes with connectivity problems are reported in 'input.lis.conn'
         
Maximum DC iterations 250
Verilog-A library successfully linked.
Error: Fail to factorize the matrix, error 3, ccbsim.c(2025)
Transient time is 0.000000ns
Total CPU time: 5.02 sec (5.29 sec wall)
Memory usage Physical: 46 MB, Virtual: 90 MB
Performing cleanup ...
Closing output files ... done
Exiting on Tue Sep 13 14:05:15 2011

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