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Thread: Mathematica 7 slow under 9.04

  1. #51
    Join Date
    Jun 2007
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    37

    Re: Mathematica 7 slow under 9.04

    I tried replacing the folder, and while it does seem to reduce the CPU usage, it does not eliminate it altogether. For the moment I've simply renamed the JLink folder (to JLink_old) to stop Java from running the programs inside.

  2. #52
    Join Date
    Dec 2008
    Beans
    9

    Re: Mathematica 7 slow under 9.04

    If i do this, the documentation center stopps to work. Thats not an option for me (as i am started to learn mathematica only a few months ago).
    But i can live with the java process. At least Mathematica is useable again on my Netbook.

    br
    HPS

  3. #53
    Join Date
    May 2007
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    34

    Re: Mathematica 7 slow under 9.04

    The Wolfram provided solution mostly works, although Java seems to hover around 7% CPU even while doing nothing.

    However, it does not address the Plot3D problem mentioned earlier...

  4. #54
    Join Date
    May 2006
    Beans
    3

    Re: Mathematica 7 slow under 9.04

    still slow after new files.
    Last edited by jgrauer; June 24th, 2009 at 03:34 PM.

  5. #55
    Join Date
    Apr 2009
    Location
    Nashville
    Beans
    21
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Mathematica 7 slow under 9.04

    Thank you for the updates. Can we make a sticky top post on this thread to offer the other users a description of the problem and the solution with the instructions? This is typically done in other threads, almost like a HOWTO format? I will be happy to write it up, if someone can tell me how to make it a top, sticky post.

  6. #56
    Join Date
    May 2009
    Beans
    5

    Re: Mathematica 7 slow under 9.04

    BTW: The files inside the JLINK.zip archive, provided at http://download.wolfram.com/?key=GM5YM4 are exactly the same files that were installed by the 7.0.1 installer. There is no need to replace them if you have Mathematica 7.0.1 installed.

    So there are currently two options to use Mathematica:

    1. For 32 bit machines replace the file:
      http://download.wolfram.com/?key=61JJHE


      Or for 64 bit machines replace the files:
      http://download.wolfram.com/?key=MK4ZR8
      http://download.wolfram.com/?key=YHDAH4

      This way you have a fully functional Mathematica, but still an idle cpu load of ~16%.
      .
    2. In addition, you can rename or "chmod a-x" the directory "SystemFiles/Links/JLink" to disable the Java support. This way you cannot use Java and the integrated help center anymore, but on the plus side there is no cpu load at all when Mathematica is idle.

    Currently I use option 2 and instead of the integrated help center I simply use the documentation at http://reference.wolfram.com which I prefer anyway, because the integrated help window performs rather sluggishly.

  7. #57
    Join Date
    May 2005
    Beans
    90

    Re: Mathematica 7 slow under 9.04

    Quote Originally Posted by therealbrewer View Post
    The Wolfram provided solution mostly works, although Java seems to hover around 7% CPU even while doing nothing.

    However, it does not address the Plot3D problem mentioned earlier...

    For Plot3D problem, use the following command to start mathematica.
    Code:
    mathematica -mesa
    I tried uxa method, but this is the only method that actually worked for me.

  8. #58
    Join Date
    Apr 2007
    Beans
    5

    Re: Mathematica 7 slow under 9.04

    I too have found success with the above instructions from Wolfram. I also renamed the java file, but I found that I need to give the folder its original name if I want access to the internet functions, like ChemicalData[]. I then re-rename it for better performance when outside access is not needed. I should write a script for this.

    Wilson Kinscherf

  9. #59
    Join Date
    Dec 2005
    Beans
    57

    Re: Mathematica 7 slow under 9.04

    Thanks!

    Point 1 of post 56 worked for me for 32 bit.

  10. #60
    Join Date
    Sep 2006
    Location
    Chicago, Illinois
    Beans
    121
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Mathematica 7 slow under 9.04

    Perhaps someone should update the ubuntu mathematica page https://help.ubuntu.com/community/Mathematica that seems to be quite outdated. It could include this new fix.
    If you want to see some things that worked for me - http://joelslinux.blogspot.com

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