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Re: Benchmark performance Under AIX

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  • Subject: [mg96518] Re: Benchmark performance Under AIX
  • From: Michael Weyrauch <michael.weyrauch at>
  • Date: Sun, 15 Feb 2009 03:22:18 -0500 (EST)
  • References: <gn5ub5$gr8$>
  • Reply-to: michael.weyrauch at


   we have also done some tests on AIX, however not systematically.

Our experience is, that performance on AIX is bad, the reasons are not 
really clear to me, but e.g. the linear algebra routines which are
parallelized even in version 6 and use specific processor dependent 
libraries, just do not seem to work efficiently on AIX. I have a program
which works for several days on a supposedly very powerful AIX but 
finishes within a day on a simple Linux server.

So, as a matter of fact, I have given up on AIX and only use Linux or 
Windows systems for now. Strangely enough AIX requires a class 2 license
and Linux just class 1. One of our computer specialists tried to clarify
these issues with Wolfram support with little success up to now.

As far as I know, Wolfram has discontinued AIX support for Version 7 
anyway, so it seems that AIX is good for business applications but not 
for Mathematica.

Michael Weyrauch

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