TIPS for errors at runtime 
^^^^^^^^^^^^^^^^^^^^^^^^^^


Tips in case of BLOW UP or ERROR
++++++++++++++++++++++++++++++++


* Check your time steps
* Eventually increase NDTFAST and/or decrease the baroclinic time step
* Check the location of your boundaries (in particular if your blow up point 
  is located close to them): it should not be placed on a too strong 
  topographic gradient, or coastline particular shape (it is usually better 
  to have a boundary normally crossing the coastline)
* Check the thickness and value of the sponge

Others possible errors
++++++++++++++++++++++


* If at runtime you got an error in reading bathymetry variable *H* (code -57)

  ::
      you may ask for too many cpus in MPI compared to the size of your grid

* **XIOS**

  .. warning :: The output time step in XIOS must be a multiple of the 3D time step in croco