I am writing code for CFD 3D solver ,program runs for small size of 3d matrix but it shows segmentation fault for large size

Question

I define arrays in this way:

double uo[n+2][m+2][n1+2] , 
       vo[n+2][m+2][n1+2] , 
       wo[n+2][m+2][n1+2] ,
       du[n+2][m+2][n1+2] , 
       dv[n+2][m+2][n1+2] ,
       dw[n+2][m+2][n1+2] ,  
       w1[n+2][m+2][n1+2] , 
       z1[n+2][m+2][n1+2] ,
       z[n+2][m+2][n1+2]  ;

Once I made it as static double then error removes but it keeps running and does not terminate.

score 1 · Answer 1 · answered Oct 26 '15 at 10:45

1

If m or n are to big, you'll get a stackoverflow because you are trying to take to much space in your stack. Dynamic allocation should be done in the heap using functions such as malloc()

answered Oct 26 '15 at 10:45

Kotshi

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I am writing code for CFD 3D solver ,program runs for small size of 3d matrix but it shows segmentation fault for large size

1 Answers1