10, the following items are output to
the PRINT file when Start
= 'Cold' and no basis file is
loaded.If Major
print level 10, the following items are output to
the PRINT file when Start
= 'Cold' and no basis file is
loaded.
They refer to the number of columns that the CRASH procedure selects during several passes through A while searching for a triangular basis matrix.
|
Label |
Description |
|
Slacks |
is the number of slacks selected initially. |
|
Free cols |
is the number of free columns in the basis, including those whose bounds are rather far apart. |
|
Preferred |
is the number of "preferred''
columns in the basis (i.e., hs(j)
= 3 for some j |
|
Unit |
is the number of unit columns in the basis. |
|
Double |
is the number of columns in the basis containing 2 nonzeros. |
|
Triangle |
is the number of triangular columns in the basis with 3 or more nonzeros. |
|
Pad |
is the number of slacks used to pad the basis (to make it a nonsingular triangle). |
