[Ipopt] (no subject)

[Jonathan Hogg]

All HSL routines, including MA27, which interface with Ipopt should be
thread safe.

I'm fairly sure the Intel version of Paradiso is thread safe, from the
MKL FAQ:
"Can I use Intel MKL if I thread my application?
The Intel Math Kernel Library is designed and compiled for thread safety
so it can be called from programs that are threaded. It is fine to
calling Intel MKL routines that are threaded from multiple application
threads, like windows API CreateThread() or Pthread API etc."

Jonathan.

On 29/07/15 18:45, Damien wrote:
> Most of the linear solvers aren't thread safe or rentrant.  You can only
> run one copy of the linear solver per memory space (i.e. per process). 
> Intel Pardiso, MUMPS, MA27 all have this problem, they use SAVE
> statements internally and multiple calls in one process overwrites those
> memory areas and they crash or give weird results.  It's not
> specifically an IPOPT problem.
> 
> Damien
> 
> On 2015-07-29 11:41 AM, Gabriel Hackebeil wrote:
>>> I understand that IPOPT is currently not thread safe
>>
>> I was under the impression it was thread safe
>> (<https://projects.coin-or.org/Ipopt/ticket/167>https://projects.coin-or.org/Ipopt/ticket/167).
>> Is this no longer true?
>>
>> Gabe
>>
>>> On Jul 29, 2015, at 1:03 PM,
>>> <mailto:jmogali at andrew.cmu.edu>jmogali at andrew.cmu.edu wrote:
>>>
>>> Hi,
>>>        I am trying create a distributed system of agents where each agent
>>> solves a convex optimization problem in Java on a single machine.
>>> I understand that IPOPT is currently not thread safe, is there a
>>> way I can still create a distributed system on a single machine
>>> using IPOPT ? Instead of java threads, if I use different
>>> processes for each of my agents will IPOPT work correctly ,
>>> assuming I do interprocess communication? Any other solution
>>> suggestions is also welcome.
>>>
>>> Thanks,
>>> Jayanth
>>>
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>>> http://list.coin-or.org/mailman/listinfo/ipopt
>>
>>
>>
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> 
> 
> 
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