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Mon Jul 16 16:50:38 EDT 2012


cation run ipopt in parallel, as long each thread only access its own insta=
nce of ipopt

1)      Declare ipopt as TLS variable. (per thread based)

2)      In Ipopt/src/Common/IpTaggedObject.hpp, change the following two va=
riables as TLS variable or atomic ones:

static Tag unique_tag_;

Tag tag_
Anyone has successful story to run multiple instances of ipopt in one appli=
cation?

Thanks
George




________________________________

    George Zhou
     Senior Developer

     Spot Trading L.L.C
     440 South LaSalle St., Suite 2800
     Chicago, IL 60605
     Office: 312.362.4550
     Direct: 312-362-4699
     Fax: 312.362.4551
     George.Zhou at spottradingllc.com
     www.spottradingllc.com<http://www.spottradingllc.com/>

________________________________

The information contained in this message may be privileged and confidentia=
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nk=3Dpurple><!--ppd1000035--><div class=3DWordSection1><p class=3DMsoNormal=
>Hi, All,<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=
=3DMsoNormal> <a href=3D"https://projects.coin-or.org/Ipopt/ticket/167#comm=
ent:1">https://projects.coin-or.org/Ipopt/ticket/167#comment:1</a>,<o:p></o=
:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>From =
Andreas&#8217;s comments, I think the following two changes could make appl=
ication run ipopt in parallel, as long each thread only access its own inst=
ance of ipopt<o:p></o:p></p><p class=3DMsoNormal> <o:p></o:p></p><p class=
=3DMsoListParagraph style=3D'text-indent:-.25in;mso-list:l0 level1 lfo1'><!=
[if !supportLists]><span style=3D'mso-list:Ignore'>1)<span style=3D'font:7.=
0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endi=
f]>Declare ipopt as TLS variable. (per thread based)<o:p></o:p></p><p class=
=3DMsoListParagraph style=3D'text-indent:-.25in;mso-list:l0 level1 lfo1'><!=
[if !supportLists]><span style=3D'mso-list:Ignore'>2)<span style=3D'font:7.=
0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endi=
f]>In Ipopt/src/Common/IpTaggedObject.hpp, change the following two variabl=
es as TLS variable or atomic ones:<o:p></o:p></p><p class=3DMsoListParagrap=
h style=3D'margin-left:1.0in'>static Tag unique_tag_;<o:p></o:p></p><p clas=
s=3DMsoListParagraph style=3D'margin-left:1.0in'>Tag tag_<o:p></o:p></p><p =
class=3DMsoNormal>Anyone has successful story to run multiple instances of =
ipopt in one application?<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o=
:p></p><p class=3DMsoNormal>Thanks<o:p></o:p></p><p class=3DMsoNormal>Georg=
e<o:p></o:p></p><p class=3DMsoListParagraph><o:p>&nbsp;</o:p></p></div><br =
/><br />
<HR align=3Dleft width=3D250 color=3D#000066 SIZE=3D2>

<P align=3Dleft><FONT face=3DArial color=3D#000066 size=3D2><STRONG>&nbsp; =
&nbsp;=20
George Zhou</STRONG><FONT=20
size=3D1>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><STRONG><FONT=20
size=3D1><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></STRONG></FONT><FONT fac=
e=3DArial=20
color=3D#000066 size=3D2><STRONG><FONT=20
size=3D1>Senior Developer</FONT></STRONG></FONT><FONT face=3DArial color=3D=
#000066=20
size=3D2><BR><BR></FONT><FONT face=3DArial color=3D#000066=20
size=3D1>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Spot Trading L.L.C<BR>&nbsp; &nbsp;=
=20
&nbsp;440 South LaSalle St., Suite 2800<BR>&nbsp; &nbsp; &nbsp;Chicago, IL=
=20
60605<BR>&nbsp; &nbsp; &nbsp;Office:=20
312.362.4550&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;Direct:=20
312-362-4699&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;Fax:=20
312.362.4551<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;George.Zhou at spottradingllc.co=
m&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT face=3DArial color=3D#000066=20
size=3D1></FONT><FONT=20
face=3DArial color=3D#000066 size=3D1><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<A=
=20
href=3D"http://www.spottradingllc.com/">www.spottradingllc.com</A>=20
</FONT></P><FONT size=3D1></FONT>
<HR align=3Dleft width=3D250 color=3D#000066 SIZE=3D2>

<P align=3Dleft><FONT face=3Darial color=3D#000066 size=3D1>The information=
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this message may be privileged and confidential and protected from disclosu=
re.=20
If the reader of this message is not the intended recipient, or an employee=
 or=20
agent responsible for delivering this message to the intended recipient, yo=
u are=20
hereby notified that any dissemination, distribution or copying of this=20
communication is strictly prohibited. If you have received this communicati=
on in=20
error, please notify us immediately by replying to the message and deleting=
 it=20
from your computer. Thank you. Spot Trading, LLC</FONT></P>
<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
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