Are complex*16 variables static by default?

[Jerry DeLisle]

On 01/27/2017 02:46 PM, Steffen Boerm wrote:
>
> Hello,
>
> how are complex*16 variables handled by gfortran if "-frecursive" is
> not specified?
>
> Is it possible that they are stored as static variables?
>
> I am using LAPACK's zlarfg and zlarf functions within a C program, and
> my code works just fine as long as OpenMP is disabled. When I enable
> multi-threading, the code behaves erratically, and I am wondering
> whether this might be due to the complex*16 constants "one" and "zero"
> in zlarf or the complex*16 variable "temp" in zgerc.

I am not the best person to answer this.

I am doubtful LAPACK is thread safe. I think you need to force single thread 
through execution of those functions.

We may need more information. Have you asked on comp.lang.fortran. It would be 
more appropriate to ask your question there.

Jerry