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Re: Mathematica Kernel Stops Functioning

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  • Subject: [mg131413] Re: Mathematica Kernel Stops Functioning
  • From: David Bailey <dave at>
  • Date: Sun, 21 Jul 2013 04:22:57 -0400 (EDT)
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  • References: <ks82vd$jo6$>

On 18/07/2013 07:46, johnfeth at wrote:
> I installed Mathematica 9 on my computer (64 bit quad core AM 3450 (AMD) processor with 6 GB of ram) about a week ago.  I've run a couple of notebooks (a notebook with intensive numerical computation and a notebook with intensive symbolic computation) which I developed on Mathematica versions 6, 7, and 8.  Both of these notebooks work very well with Mathematica 6, 7, and 8.
> However, Mathematica 9 starts off with great fervor (as I watch with the Windows 7 (64 bit) Resource Monitor), but after about an hour of computation, the Mathematica kernel simply stops working and the CPU runs at only about 1% apparently performing only inscrutable PC housekeeping tasks.  Not surprisingly, the notebook never ends, and I get no result.
> Does anyone have an idea why this is happening?  Or better yet, how to fix it?
> Thanks,
> John
You are going to have to supply more evidence, or narrow the issue down 

Installing Mathematica 9 will not remove previous versions, so I would 
try running your problems on a previous version just to confirm that 
they do still work.

Obviously, if the notebook is reasonably self contained, it may be best 
to just send it to Wolfram Support, but I'd start by watching to 
determine which cell of your notebook actually hangs.

It may also help to add a few Print statements at likely places to 
follow the progress of your calculation.

If the notebook is small and self-contained enough, you could put it 
somewhere on the internet and post a link here.

David Bailey

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