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Re: Kernel exits

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  • Subject: [mg128078] Re: Kernel exits
  • From: David Bailey <dave at removedbailey.co.uk>
  • Date: Fri, 14 Sep 2012 00:22:35 -0400 (EDT)
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On 13/09/2012 08:43, davidgolber wrote:
> Running Mathematica 4 on a new PC (lots of memory)under Windows 7 Professional and XP Virtual Machine.
>
> When doing long calculations, the kernal exits with no error messages of any kind, after about two hours.  The front end is there, but the kernel is gone.  (So if I type a command into the front end, it is as though the notebook has just been loaded and this is the first command given.)
>
> The calculation is a lot of FindMinimum, with some error messages ("zero gradient" and "did not converge") which are suppressed as usual after four appearances.  I wonder if the error process uses stack which is then not released correctly.
>
> Any suggestions?
>
> Thank you.
> David Golber
>
I am not 100% certain, but I don't think Mathematica 4 came with the 
ability to install in 64-bit mode. This would mean that you are 
executing the 32-bit software, which can only use a limited amount of 
memory.

Get the kernel started, and look in the Windows Task Manager to check if 
the kernel is running in 32 bit mode or not.

The answer, of course, is to upgrade to Mathematica 8! However, if 
whatever you are doing still swallows too much memory, you could still 
get the same behaviour.

David Bailey
http://www.dbaileyconsultancy.co.uk



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