Re: Mathematica Kernel Stops Functioning
- To: mathgroup at smc.vnet.net
- Subject: [mg131450] Re: Mathematica Kernel Stops Functioning
- From: "Thomas P. Melehan" <tpmelehan at gmail.com>
- Date: Wed, 24 Jul 2013 22:04:47 -0400 (EDT)
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Please share the results of your discussions with Wolfram - I have experienced much the same problem.. Thanks Tom On Jul 23, 2013, at 5:21 PM, johnfeth at gmail.com wrote: > On Sunday, July 21, 2013 1:13:55 AM UTC-7, David Bailey wrote: >> On 18/07/2013 07:46, johnfeth at gmail.com 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 >> >> somewhat. >> >> >> >> 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 >> >> http://www.dbaileyconsultancy.co.uk > > David, > > Thanks for your reply. I've made a notebook with the algorithm and a data set, the analysis program I've written, and the results using > > Mathematica 8 which plots 43 data points(3100 seconds to completion with Ubuntu Linux, 32 bit 2.4 GHz Intel quad core processor) > > and using > > Mathematica 9 plotting only 7 data points(8000 seconds to completion with with Windows 7, 64 bit 3.6 GHz AMD quad core processor). > > I've sent the notebook to Mathematica support and they are trying to understand the gross performance difference. > > In the mean time, if you would like to fiddle around with it, I could send you the notebook (~1.1 M bytes, virtually all of which is a data set). > > John Feth >
- References:
- Re: Mathematica Kernel Stops Functioning
- From: johnfeth@gmail.com
- Re: Mathematica Kernel Stops Functioning