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hi all:<br>
<br>
I use MA27 as my default solver.<br>
There are 15000 <span style="color: rgb(67, 67, 67); font-family:
Arial, sans-serif; font-size: 14px; font-style: normal;
font-variant: normal; font-weight: bold; letter-spacing: normal;
line-height: 24px; orphans: auto; text-align: start; text-indent:
0px; text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px; display: inline
!important; float: none;">Variables </span>for my question .<br>
the input data may be too large and ipopt print information as
below:<br>
<i><br>
</i><i> 66r 2.7573601e+12 1.18e+06 9.88e+02 6.9 2.49e+08 -
5.62e-05 7.61e-03f 1</i><i><br>
</i><i> 67r 2.7545993e+12 1.18e+06 9.88e+02 -0.1 1.73e+10 -
9.70e-05 1.12e-03f 1</i><i><br>
</i><i> 68 4.7698193e+11 4.40e+05 5.37e-01 2.2 3.33e+07 -
1.12e-02 6.26e-01h 1</i><i><br>
</i><i> 69 1.8904455e+11 1.13e+05 1.09e+00 2.4 2.81e+06 -
6.92e-02 7.43e-01h 1</i><i><br>
</i><i>iter objective inf_pr inf_du lg(mu) ||d|| lg(rg)
alpha_du alpha_pr ls</i><i><br>
</i><i> 70 3.0346243e+10 2.78e+04 6.92e-01 -1.9 7.51e+06 -
2.32e-01 7.54e-01h 1</i><i><br>
</i><i> 71 2.2450431e+09 3.56e+03 4.34e-01 -2.0 3.62e+06 -
2.58e-01 8.72e-01h 1</i><i><br>
</i><i> 72 4.0989559e+08 3.16e+03 5.04e+00 1.7 9.66e+05 -
7.13e-01 1.11e-01f 1</i><i><br>
</i><i> 73 2.1918911e+07 3.24e+02 5.18e-01 -2.7 8.67e+05 -
9.19e-01 8.97e-01h 1</i><i><br>
</i><i> 74 1.7622191e+07 4.05e+00 6.65e-03 -3.8 1.48e+05 -
9.78e-01 9.88e-01h 1</i><i><br>
</i><i> 75 1.7618256e+07 2.33e-09 1.44e-02 -5.4 8.50e+03 -
9.90e-01 1.00e+00h 1</i><i><br>
</i><i>MA27BD returned iflag=-4 and requires more memory.</i><i><br>
</i><i> Increase liw from 11075700 to 22151400 and la from 11620400
to 48600530 and factorize again.</i><i><br>
</i><i> 76 1.7337765e+07 2.33e-09 2.23e-01 -7.4 5.68e+03 -
9.61e-01 1.00e+00h 1</i><br>
---<br>
<b><big>my ipopt.opt file:</big></b><br>
<i>ma27_liw_init_factor 100.0</i><i><br>
</i><i>ma27_la_init_factor 100.0</i><i><br>
</i><i>ma27_meminc_factor 2.0</i><i><br>
</i><i>constr_mult_init_max 0</i><i><br>
</i><i>nlp_scaling_method gradient-based</i><i><br>
</i><i>linear_solver ma27</i><br>
<br>
---<br>
<b>Is the reason too much var ?</b><b><br>
Can HSL_MA86 solve my problem?<br>
</b><span style="color: rgb(67, 67, 67); font-family: Arial,
sans-serif; font-size: 14px; font-style: normal; font-variant:
normal; font-weight: bold; letter-spacing: normal; line-height:
24px; orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px; display: inline
!important; float: none;"><br>
</span><b>I find the table from </b><b><a
href="http://www.hsl.rl.ac.uk/ipopt/">http://www.hsl.rl.ac.uk/ipopt/</a></b><b> </b><b>
:</b><br>
<img src="cid:part2.04000100.07040704@staff.sina.com.cn" alt=""><br>
<br>
<br>
<br>
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