int CollectData1D(cGH *GH, int vindex, int vtimelvl, int vdim,
		  int *S_l, int *u_l, int *ds, int len_l, 
		  void **dptr, int *dsize);

int CollectLocalData1D(cGH *GH, int vindex, int vtimelvl, int vdim, 
		       int *S_l, int *u_l, int *ds, int len_l,
		       void **loc_dptr, int *dsize);

int GetLocalLine(cGH *GH, 
		 int vardim, int *S_l, int *u_l, int *ds, int len_l, 
		 int *locstart, int *locend, int *nlocpoints);