function matlab_example

% Anzahl der paralellen MATLAB-Worker definieren
% (am LRZ-LX-Cluster momentan <= 8)
global poolsize
poolsize = getenv('MATLAB_POOL_SIZE')

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% serial part
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
a=4+4;
b=2^a;

save('matlab_example.out','a','b','-ascii','-double');

save

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% parallel part, if MATLAB_POOL_SIZE 
%% environment variable is defined
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
if ~isempty(poolsize)
    matlabpool('local', poolsize)
end
matlabpool size

% distributed data
x=rand(10000);
xd=distributed(x);
tic;
gather(xd*xd);
toc

% single program multiple data
tic;
spmd, sum(sum(rand(10))); end
toc

% parallel for
tic;
parfor i=1:100
    a=sum(sum(rand(10000)));
end
toc

if ~isempty(poolsize)
    matlabpool close
end

exit;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% END
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%