求大神解答，仿真出现这种错误是什么意思
Singularity has been detected withinSUBROUTINE REDUCT,which does Gaussian elimination. The diagonal element for row4 is equal to0.00000000E+00, which is less than the toleranceEPSILNof the floating-point miscellaneous data card.Other local variables that might be valuable to Program Maintenance in interpreting the trouble are as follows : N = 6 M = 0.
计算没有收敛，肯定是参数设置有问题。
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