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function sstest2
%SSTEST2 exhaustive performance test for SSMULT. Requires ssget.
% ssget is available at http://www.suitesparse.com
%
% Example
% sstest2
%
% See also ssmult, ssmultsym, ssmult_install, sstest, ssget, mtimes.
% SSMULT, Copyright (c) 2007-2011, Timothy A Davis. All Rights Reserved.
% SPDX-License-Identifier: GPL-2.0+
help sstest2
try
index = ssget ;
catch
fprintf ('\nsstest2 requires ssget.\n') ;
fprintf ('see http://www.suitesparse.com\n') ;
return ;
end
[ignore, f] = sort (index.nnz) ; %#ok
nmat = length (f) ;
TM = zeros (nmat, 4) ;
T1 = zeros (nmat, 4) ;
tlim = 0.01 ;
tmin = 1 ;
tmax = 0 ;
check = 1 ;
rand ('state', 0)
for k = 1:nmat
Prob = ssget (f (k), index) ;
A = Prob.A ;
clear Prob
for kind = 1:4
try
if (~isreal (A))
A = spones (A) ;
end
B = A' ;
if (kind == 2)
A = sprand (A) + 1i*sprand(A) ;
B = sprand (B) ;
elseif (kind == 3)
A = sprand (A) ;
B = sprand (B) + 1i*sprand(B) ;
elseif (kind == 4)
A = sprand (A) + 1i*sprand(A) ;
B = sprand (B) + 1i*sprand(B) ;
end
C = A*B ; % warmup
if (check)
D = ssmult (A,B) ;
err = norm (C-D,1) ;
if (err > 0)
fprintf ('err: %g\n', err) ;
error ('!')
end
clear D
else
% warmup, for accurate timings
C = ssmult (A,B) ; %#ok
clear C
end
tr = 0 ;
tm = 0 ;
tic
while (tm < tlim)
C = A*B ; %#ok
clear C
tr = tr + 1 ;
tm = toc ;
end
tm = tm / tr ;
tr = 0 ;
t1 = 0 ;
tic
while (t1 < tlim)
C = ssmult (A,B) ; %#ok
clear C
tr = tr + 1 ;
t1 = toc ;
end
t1 = t1 / tr ;
fprintf ('%4d: %4d ', k, f(k)) ;
fprintf (...
'MATLAB %12.6f SSMULT %12.6f speedup %12.3f', ....
tm, t1, tm / t1) ;
if (tm < t1)
fprintf (' ****') ;
end
fprintf ('\n') ;
TM (k,kind) = tm ;
T1 (k,kind) = t1 ;
tmin = min (tmin, tm) ;
tmax = max (tmax, tm) ;
catch me
disp (me.message)
TM (k,kind) = 1 ;
T1 (k,kind) = 1 ;
end
end
for kind = 1:4
subplot (2,4,kind) ;
r = TM (1:k,kind) ./ T1 (1:k,kind) ;
rmin = min (r) ;
rmax = max (r) ;
loglog (TM (1:k,kind), r, 'o', ...
[tmin tmax], [1 1], 'r-', ...
[tmin tmax], [1.1 1.1], 'r-', ...
[tmin tmax], [1/1.1 1/1.1], 'r-', ...
[tmin tmax], [2 2], 'g-', ...
[tmin tmax], [1.5 1.5], 'g-', ...
[tmin tmax], [1/1.5 1/1.5], 'g-', ...
[tmin tmax], [.5 .5], 'g-' );
if (k > 2)
axis ([tmin tmax rmin rmax]) ;
end
xlabel ('MATLAB time') ;
ylabel ('MATLAB/SM time') ;
if (kind == 1)
title ('real*real') ;
elseif (kind == 2)
title ('complex*real') ;
elseif (kind == 3)
title ('real*complex') ;
elseif (kind == 4)
title ('complex*complex') ;
end
end
drawnow
clear A B C
save sstest2_results.mat TM T1 f
diary off
diary on
end
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