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## [Help-glpk] [Fwd: what does the output mean]

**From**: |
Andrew Makhorin |

**Subject**: |
[Help-glpk] [Fwd: what does the output mean] |

**Date**: |
Thu, 27 Jan 2011 15:27:11 +0300 |

-------- Forwarded Message --------
From: Claudia <address@hidden>
To: address@hidden
Subject: what does the output mean
Date: Thu, 27 Jan 2005 12:09:43 +0100
hallo everybody
I m quit new in using glpk and I wonder what the following output means:
glp_simplex: original LP has 1739 rows, 261 columns, 26721 non-zeros
glp_simplex: presolved LP has 1512 rows, 30 columns, 26470 non-zeros
Scaling...
A: min|aij| = 1.541e-34 max|aij| = 1.241e+01 ratio = 8.052e+34
GM: min|aij| = 3.972e-14 max|aij| = 2.518e+13 ratio = 6.338e+26
EQ: min|aij| = 1.578e-27 max|aij| = 1.000e+00 ratio = 6.338e+26
Crashing...
Size of triangular part = 1512
|3394516: obj = 2.948447393e+00 infeas = 0.000e+00 (0)
Integer optimization begins...
+3457712: mip = not found yet >= -inf (1; 0)
+3458014: >>>>> 3.915303074e+00 >= 2.948535456e+00 24.7% (20; 0)
+3458421: >>>>> 3.816693853e+00 >= 2.948535456e+00 22.7% (37; 1)
+3458505: >>>>> 3.715379696e+00 >= 2.948535456e+00 20.6% (41; 8)
+3458641: >>>>> 3.680299957e+00 >= 2.948535456e+00 19.9% (52; 17)
+3458682: >>>>> 3.622318282e+00 >= 2.948535456e+00 18.6% (58; 18)
+3458709: >>>>> 3.447958058e+00 >= 2.948535456e+00 14.5% (64; 19)
+3458733: >>>>> 3.234587190e+00 >= 2.948535456e+00 8.8% (60; 36)
+3458741: >>>>> 3.168393019e+00 >= 2.948535456e+00 6.9% (48; 63)
+3458745: >>>>> 3.028137040e+00 >= 2.948535456e+00 2.6% (44; 72)
+3458748: >>>>> 2.952131912e+00 >= 2.948535456e+00 0.1% (26; 111)
+3458933: >>>>> 2.950162350e+00 >= 2.948535456e+00 < 0.1% (19; 147)
+3458947: >>>>> 2.949524969e+00 >= 2.948535456e+00 < 0.1% (17; 157)
+3459635: >>>>> 2.948942155e+00 >= 2.948535456e+00 < 0.1% (20; 195)
+3459650: >>>>> 2.948535456e+00 >= 2.948535456e+00 < 0.1% (19; 206)
+3459650: mip = 2.948535456e+00 >= tree is empty 0.0% (0; 261)
INTEGER OPTIMAL SOLUTION FOUND
I would like to know what the rows with the "%" mean!
can anybody help me?
thanks
claudia

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*Andrew Makhorin* **<=**