entries of data tensor is 7.52e-04 seconds.
(If zeroing is done in preprocessing, set 'skip_zeroing' to true.)
 Iter  FuncEvals       F(X)          ||G(X)||/N        
------ --------- ---------------- ----------------
     0         1      42.12686745       0.23070139
    10        37       3.20399740       0.01068598
    20        74       1.86647166       0.01496155
    30       102       1.75795458       0.00124314
    40       122       1.75699489       0.00030707
    50       164       1.59387469      