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tic
a=rand(500,300,200);
t1=toc
b=(sin(a)+cos(a)).*(log(sin(a)-cos(a))).^2;
t2=toc
Test numbers                   1              2           3               4         5
t1(create matrix)         0.90615         0.81242     0.81237         0.81743   0.81966
t2(total time)             9.1472          8.8163      8.8272          8.8243    8.8367
P-octave
(Test on dual core system.)
hosts=["127.0.0.1";"127.0.0.1"];
sockets=connect(hosts);
tic
reval(["tic";"a=rand(500,300,100);";"t(1)=toc";"b=(sin(a)+cos(a)).*(log(sin(a)-cos(a))).^2;";"t(2)=toc"],sockets(2,:));
tc1=toc
a=rand(500,300,100);
t0=toc;
b=(sin(a)+cos(a)).*(log(sin(a)-cos(a))).^2;
t2=toc;
reval("send(t,sockets(1,:))",sockets(2,:));
t3=toc;
tp2=recv(sockets(2,:))
tt=toc
tp1=t2-tc1
tc2=t3-t2
tc3=tt-t3
tcomm=tc1+tc2+tc3
tp11=t0-tc1
tp12=t2-t0
Test number                     1               2            3
Tp1(create matrix)         0.053338         0.52372      0.50853
Tp1(total time on
                             6.0395          6.0568       6.1578
1st processor)
Tp2(create matrix)          0.49761         0.48925      0.50326
Tp2(total time on
                            6.06351         5.94482      6.07540
2nd processor)
communication
                           0.028245       0.0012259    0.0012391
time
Total time                   6.0677          6.0580       6.1578
Speedup=1.456         Efficiency of parallel code=72.8%