[petsc-users] Question on ksp examples ex14f.F

[Barry Smith]

On May 3, 2014, at 2:33 PM, Danyang Su <danyang.su at gmail.com> wrote:

> Hi All,
> 
> The codes can run successfully in release mode, but in debug mode, it causes the following error.
> forrtl: severe (408): fort: (11): Subscript #1 of the array XX has value -665625807 which is less than the lower bound of 1
> 
> I can get rid of this error by replacing VecGetArray to VecGetArrayF90 and do not use idx in XX. The same problem exists in ltog from DMDAGetGlobalIndices().
> 
> Is there any other way to avoid this kind of error in fortran since the release mode can run without error?
> Is this caused by the configuration in Fortran?

    Certain Fortran compilers add extra code which check for out of array bounds access. Found out how to turn it off your your compiler. For example https://software.intel.com/en-us/forums/topic/271337  and do some googling.

   Barry

> 
> Thanks and regards,
> 
> Danyang