Re: [Coin-ipopt] Is Ipopt + MUMPS thread safe?

[Damien Hocking]

I'm pretty sure IPOPT isn't thread-safe.  MUMPS definitely isn't.  If you want to run two separate solves in two threads, you need a separate instance of IPOPT in each thread.  Watch your BLAS and LAPACK libraries too, if they're old F77 codes, they might have things like SAVE statements, which means you should only run one instance in any process space.

Damien
  _____  

From: Javier Pedrido [mailto:javierpedrido at hotmail.com]
To: coin-ipopt at list.coin-or.org
Sent: Thu, 11 Oct 2007 09:39:45 -0600
Subject: [Coin-ipopt] Is Ipopt + MUMPS thread safe?

Hi,
  
  I was trying the new Java interface and whenever I run it from 2 different 
  threads, Ipopt crashes. Ipopt uses MUMPS as linear solver and was compiled 
  with g95/g++ and with ifort/cl. Both builds crash in multi-threaded 
  environments. Am I doing something wrong or Ipopt/MUMPS are not thread safe?
  
  Thanks in advance,
  Javier
  
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