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<span style="color: rgb(50, 49, 48); font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; background-color: rgb(255, 255, 255); display: inline !important">We have fixed this bug
in petsc-release (maint branch). Thanks for you report.</span></div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> petsc-dev <petsc-dev-bounces@mcs.anl.gov> on behalf of Pierre Jolivet <pierre.jolivet@enseeiht.fr><br>
<b>Sent:</b> Wednesday, August 5, 2020 2:10 AM<br>
<b>To:</b> Abhyankar, Shrirang G <shrirang.abhyankar@pnnl.gov><br>
<b>Cc:</b> PETSc <petsc-dev@mcs.anl.gov><br>
<b>Subject:</b> Re: [petsc-dev] TAOPDIPM</font>
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<div class="" style="word-wrap:break-word; line-break:after-white-space">Sorry for these questions, I’m trying to help the said user transitioning from IPOPT over to Tao, and since I’m no expert I run into a bunch of errors myself.
<div class="">For example, if I run PDIPM without equality constraint, I now get:</div>
<div class="">[0]PETSC ERROR: VecSet() line 522 in src/vec/vec/interface/rvector.c Null Object: Parameter # 1</div>
<div class="">Indeed, I can see that lambdae is conditionally created line 815, but always used in VecSet() line 522.</div>
<div class="">I think the method is general enough to handle cases without such constraints, and should not thus fail here, right?</div>
<div class="">You should be able to reproduce this by commenting all DE/De/EqualityConstraints/JacobianEquality code from ex1.c.</div>
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<div class="">Thanks,</div>
<div class="">Pierre</div>
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<blockquote type="cite" class="">
<div class="">On 5 Aug 2020, at 5:27 AM, Abhyankar, Shrirang G <<a href="mailto:shrirang.abhyankar@pnnl.gov" class="">shrirang.abhyankar@pnnl.gov</a>> wrote:</div>
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<span class="" style="font-size:12pt; font-family:"Times New Roman",serif">Pierre,</span></div>
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<span class="" style="font-size:12pt; font-family:"Times New Roman",serif"> Thanks for catching this issue. As Alp pointed out, the issue was because the tolerance was not set correctly.</span></div>
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<span class="" style="font-size:12pt; font-family:"Times New Roman",serif"> </span></div>
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<span class="" style="font-size:12pt; font-family:"Times New Roman",serif">@Alp: Let me know if I can help you with the patch.</span></div>
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<span class="" style="font-size:12pt; font-family:"Times New Roman",serif"> </span></div>
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<span class="" style="font-size:12pt; font-family:"Times New Roman",serif">Thanks,</span></div>
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<span class="" style="font-size:12pt; font-family:"Times New Roman",serif">Shri </span></div>
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<b class=""><span class="" style="font-size:12pt">From:<span class="x_Apple-converted-space"> </span></span></b><span class="" style="font-size:12pt">petsc-dev <<a href="mailto:petsc-dev-bounces@mcs.anl.gov" class="">petsc-dev-bounces@mcs.anl.gov</a>> on behalf
of Pierre Jolivet <<a href="mailto:pierre.jolivet@enseeiht.fr" class="">pierre.jolivet@enseeiht.fr</a>><br class="">
<b class="">Date:<span class="x_Apple-converted-space"> </span></b>Tuesday, August 4, 2020 at 1:46 PM<br class="">
<b class="">To:<span class="x_Apple-converted-space"> </span></b>"Dener, Alp" <<a href="mailto:adener@anl.gov" class="">adener@anl.gov</a>><br class="">
<b class="">Cc:<span class="x_Apple-converted-space"> </span></b>PETSc Development <<a href="mailto:petsc-dev@mcs.anl.gov" class="">petsc-dev@mcs.anl.gov</a>><br class="">
<b class="">Subject:<span class="x_Apple-converted-space"> </span></b>Re: [petsc-dev] TAOPDIPM</span></div>
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Thanks to you both, I’ll forward this to my user.</div>
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Pierre</div>
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On 4 Aug 2020, at 7:30 PM, Dener, Alp <<a href="mailto:adener@anl.gov" class="" style="color:blue; text-decoration:underline">adener@anl.gov</a>> wrote:</div>
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Hi Pierre,</div>
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<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
This is indeed an issue with TAO default tolerances.</div>
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<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
Specifically it has to do with constraint tolerances. The default value is an exact zero.</div>
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The problem should still work with line 89 commented out. Our default gradient tolerance is 1e-8. In your case, commenting out line 90 is causing the solver to try to converge constraints to exact zero and it cannot.</div>
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I will get a patch out for this within the week but in the meantime please ensure that the constraint tolerances are set for any constrained problem.</div>
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Thank you!</div>
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—</div>
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Alp</div>
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<blockquote id="x_MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE" class="" type="cite" style="border-style:none none none solid; border-left-width:4.5pt; border-left-color:rgb(181,196,223); padding:0in 0in 0in 4pt; margin-left:3.75pt; margin-right:0in">
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On Aug 4, 2020, at 12:24 PM, Munson, Todd via petsc-dev <<a href="mailto:petsc-dev@mcs.anl.gov" class="" style="color:blue; text-decoration:underline">petsc-dev@mcs.anl.gov</a>> wrote:</div>
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Hi Pierre,</div>
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I would say the answer to that question is "no, its not expected". </div>
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We will look into fixing it. It seems like the default tolerances are being set to zero and the result is an inability to satisfy the constraints or gradient of the Lagrangian to that small of a tolerance.</div>
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Thanks for point this out to us! We will get it resolved.</div>
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<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
Thanks, Todd.</div>
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On 8/4/20, 12:12 PM, "petsc-dev on behalf of Pierre Jolivet" <<a href="mailto:petsc-dev-bounces@mcs.anl.gov" class="" style="color:blue; text-decoration:underline">petsc-dev-bounces@mcs.anl.gov</a><span class="x_Apple-converted-space"> </span>on behalf of<span class="x_Apple-converted-space"> </span><a href="mailto:pierre.jolivet@enseeiht.fr" class="" style="color:blue; text-decoration:underline">pierre.jolivet@enseeiht.fr</a>>
wrote:</div>
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Hello,</div>
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<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
If I comment line 89 and 90 of src/tao/constrained/tutorials/ex1.c from master, the example deadlocks with a single process.</div>
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Is this expected?</div>
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Thanks,</div>
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Pierre</div>
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$ ./ex1 -tao_monitor</div>
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---- Constrained Problem -----</div>
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Solution should be f(1,1)=-2</div>
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0 TAO, Function value: 8., Residual: 8.48528</div>
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1 TAO, Function value: 1.28532, Residual: 10.7411</div>
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2 TAO, Function value: -2.56703, Residual: 1.87847</div>
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3 TAO, Function value: -2.03161, Residual: 0.12881</div>
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4 TAO, Function value: -1.99961, Residual: 0.0450855</div>
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5 TAO, Function value: -1.99993, Residual: 0.000916939</div>
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6 TAO, Function value: -1.99999, Residual: 6.69184e-05</div>
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7 TAO, Function value: -2., Residual: 7.15427e-06</div>
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8 TAO, Function value: -2., Residual: 7.15779e-07</div>
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9 TAO, Function value: -2., Residual: 7.15777e-08</div>
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10 TAO, Function value: -2., Residual: 7.15777e-09</div>
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11 TAO, Function value: -2., Residual: 7.15779e-10</div>
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12 TAO, Function value: -2., Residual: 7.15775e-11</div>
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13 TAO, Function value: -2., Residual: 7.1599e-12</div>
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14 TAO, Function value: -2., Residual: 7.1599e-13</div>
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15 TAO, Function value: -2., Residual: 7.22085e-14</div>
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16 TAO, Function value: -2., Residual: 6.44626e-15</div>
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17 TAO, Function value: -2., Residual: 1.00751e-15</div>
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18 TAO, Function value: -2., Residual: 1.70295e-17</div>
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19 TAO, Function value: -2., Residual: 1.70295e-18</div>
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20 TAO, Function value: -2., Residual: 1.70295e-19</div>
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21 TAO, Function value: -2., Residual: 1.70295e-20</div>
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22 TAO, Function value: -2., Residual: 1.70295e-21</div>
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23 TAO, Function value: -2., Residual: 1.70295e-22</div>
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24 TAO, Function value: -2., Residual: 1.70295e-23</div>
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25 TAO, Function value: -2., Residual: 1.70295e-24</div>
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26 TAO, Function value: -2., Residual: 1.70295e-25</div>
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27 TAO, Function value: -2., Residual: 1.70295e-26</div>
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28 TAO, Function value: -2., Residual: 1.70295e-27</div>
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29 TAO, Function value: -2., Residual: 1.70295e-28</div>
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30 TAO, Function value: -2., Residual: 1.70295e-29</div>
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31 TAO, Function value: -2., Residual: 1.70295e-30</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
32 TAO, Function value: -2., Residual: 1.70295e-31</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
33 TAO, Function value: -2., Residual: 1.70295e-32</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
34 TAO, Function value: -2., Residual: 1.70295e-33</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
35 TAO, Function value: -2., Residual: 1.70295e-34</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
36 TAO, Function value: -2., Residual: 1.70295e-35</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
37 TAO, Function value: -2., Residual: 1.70295e-36</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
38 TAO, Function value: -2., Residual: 1.70295e-37</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
39 TAO, Function value: -2., Residual: 1.70295e-38</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
40 TAO, Function value: -2., Residual: 1.70295e-39</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
41 TAO, Function value: -2., Residual: 1.70295e-40</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
42 TAO, Function value: -2., Residual: 1.70295e-41</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
43 TAO, Function value: -2., Residual: 1.70295e-42</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
44 TAO, Function value: -2., Residual: 1.70295e-43</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
45 TAO, Function value: -2., Residual: 1.70295e-44</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
46 TAO, Function value: -2., Residual: 1.70295e-45</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
47 TAO, Function value: -2., Residual: 1.70295e-46</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
48 TAO, Function value: -2., Residual: 1.70295e-47</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
49 TAO, Function value: -2., Residual: 1.70295e-48</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
50 TAO, Function value: -2., Residual: 1.70295e-49</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
51 TAO, Function value: -2., Residual: 1.70295e-50</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
52 TAO, Function value: -2., Residual: 1.70295e-51</div>
</div>
<div class="">
<div class="" style="margin:0in 0in 0in 0.5in; font-size:11pt; font-family:Calibri,sans-serif">
^C</div>
</div>
</blockquote>
</blockquote>
</div>
</div>
</blockquote>
</div>
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