# Copyright (C) 2005  Michael Creel <michael.creel@uab.es>
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; If not, see <http://www.gnu.org/licenses/>.

# This is for internal use by nls_estimate


function contrib = nls_obj_nodes(theta, data, model, modelargs, nn)
	global NEWORLD NSLAVES
	# Who am I?
	[info, rank] = MPI_Comm_rank(NEWORLD); 
	
	if rank == 0 # Do this if I'm master
		startblock = NSLAVES*nn + 1;
		endblock = rows(data);
	else	# this is for the slaves
		startblock = rank*nn-nn+1;
		endblock = rank*nn;
	endif	
	
	data = data(startblock:endblock,:);
	contrib = feval(model, theta, data, modelargs);
	contrib = sum(contrib);
	
endfunction
