array allocation problem for big arrays

[jaeger0]

i have one simple Problem with one subroutine, which hangs up, if an internal static allocated array, is to big, means, n_nodes >32000, somewhere. It makes no problem, if i make the array xn, as an allocatable.

Is there some compiler options to set, for larger arrays, or what should i do. I do not want to make all arrays in my subroutines as allocatable, this is to comples.

subroutine profil(n_nodes)
implicit none
integer(4) n_nodes

real xn(3,n_nodes)

[jimdempseyatthecove]

Jaeger,

In the example code given the array is allocated from the stack. It would appear that your stack size is too small. See options

/Fn
/STACK:reserve
/STACK:reserve,commit

Jim Dempsey

[jimdempseyatthecove]

And you may need to specify

real, automatic ::xn(3,n_nodes)

Although in this case since n_nodes is a dummy argument automatic is implicit. (Or it may be allocated from the heap depending on option switches. Note, if the subroutine also contained

real :: tempArray(12345)

And if you wanted to assure that tempArray was on the stack then automatic _may_ be require (dependent on option switches).

Jim Dempsey

[Steven_L_Intel1]

I would suggest trying the option /heap-arrays.