Abaqus Error Singnal 8

Dear all,

  I am working on an UMAT subroutine. The problem I have is that it works on windows system, however, when I run it on Linux environment I got  the error msg "system error "Illegal floating point operation" (signal 8)."

  I checked the subroutine for many times and also it works under windows, so it can not come from the problem of dividing by zero or something like that.

 Does anyone know why the Signal 8 error happens? I think many subroutine programmers have the same problem.

Thanks

 Zheng Li