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<div dir="ltr">Hi Martin
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<div>I am using optim_m1qn3 (installed from your github repo).</div>
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<div>I have been using it in optimisations with data.optim parameters as follows:</div>
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<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)">
<span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures"><span class="gmail-Apple-converted-space"> </span>&OPTIM</span></p>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)">
<span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures"><span class="gmail-Apple-converted-space"> </span>optimcycle=0,</span></p>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)">
<span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures"><span class="gmail-Apple-converted-space"> </span>numiter=1000,</span></p>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)">
<span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures"><span class="gmail-Apple-converted-space"> </span>nfunc=10,</span></p>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)">
<span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures"><span class="gmail-Apple-converted-space"> </span>dfminfrac=0.001,</span></p>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)">
<span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures"><span class="gmail-Apple-converted-space"> </span>iprint=10,</span></p>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)">
<span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures"><span class="gmail-Apple-converted-space"> </span>nupdate=5,</span></p>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)">
<span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures"><span class="gmail-Apple-converted-space"> </span>/</span></p>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:13px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)">
<span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures"><br>
</span></p>
and am seeing the optimisation terminate with omode=5 after about 100 iterations. The manual for m1qn3 suggests the maximum number of simulations has been reached, which is a lot less than numiter*nfunc, which (according to the git readme) is the max number
of simulations. (Though i do note that "nsim" in the text output from the optim_m1qn3 executable changes at some point in the optimisation from its initial value of 10000.) </div>
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<div>I then ran the optimisation again with nfunc=20 to see what would happen -- this time there is a termination with omode=4, the maximum number of iterations being reached -- this happened at optimcycle=116. Here, i notice that each subsequent optimcycle
gives omode=1 in the optim_m1qn3 output -- im not sure if this is significant. </div>
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<div>I was wondering if this behaviour makes sense to you, and if you would be able to explain it? Happy to provide more output from optim_m1qn3 (from the more recent optimisation with nfunc=20; the previous nfunc=10 output is deleted).</div>
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<div>Many thanks</div>
<div>Dan</div>
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-- <br>
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<div>--- PLEASE NOTE THAT I AM CURRENTLY WORKING FROM HOME AS A MEASURE OF SOCIAL DISTANCING DURING THE COVID-19 PANDEMIC ---</div>
<div dir="ltr"><br style="font-size:12.8px">
<span style="font-size:12.8px">Daniel Goldberg, PhD</span><br style="font-size:12.8px">
<span style="font-size:12.8px">Reader in Glaciology</span>
<div style="font-size:12.8px">School of Geosciences, University of Edinburgh<br>
<span style="color:rgb(0,0,0);font-family:arial,helvetica,clean,sans-serif;line-height:15px">Geography Building, Drummond Street, Edinburgh EH8 9XP</span><br>
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em: <a href="mailto:dan.goldberg@ed.ac.uk" target="_blank">dan.goldberg@ed.ac.uk</a><br>
web: <a href="https://www.geos.ed.ac.uk/homes/dgoldber" target="_blank">https://www.geos.ed.ac.uk/homes/dgoldber</a></div>
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