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Why does ListCorrelation crash the kernel?

xslittlegrass *
Posted 10 years ago

Consider this simple example:

In[1]:= Get["tmp.mx"];

In[2]:= kernel
Out[2]= {{7.17255*10^-6, 7.30973*10^-6}, {6.10599*10^-6, 6.24766*10^-6}}

In[3]:= ls    
Out[3]= {{6.54171*10^-6, 6.3699*10^-6, 6.18855*10^-6, 5.99765*10^-6}, 
        {6.58821*10^-6, 6.44822*10^-6, 6.29974*10^-6, 6.14267*10^-6}, 
        {6.07857*10^-6, 5.96735*10^-6, 5.84888*10^-6, 5.72304*10^-6},
        {5.50983*10^-6, 5.42819*10^-6, 5.34059*10^-6, 5.2469*10^-6}}

Then this crashes the kernel on my computer

In[4]:= ListCorrelate[kernel, ls , {1, -1}, {}, (#1 - #2)^2 &, Plus]

Did I do something wrong?

I'm using 10.3.0 on OS X 10.11.2

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POSTED BY: xslittlegrass *
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is using the "tmp.mx" needed to reproduce this? Using the input you show, it works fine. 10.3.1, windows 7.

enter image description here
POSTED BY: Nasser M. Abbasi
xslittlegrass *
xslittlegrass *
Posted 10 years ago

Yes, it needs the "tmp.mx" to reproduce this.
POSTED BY: xslittlegrass *

It would be helpful if you include the code used to generate the .mx file, and mention the version that saved it.
POSTED BY: Ilian Gachevski
xslittlegrass *
xslittlegrass *
Posted 10 years ago

The version of Mathematica and the operation system are included in the question. I think the code is too long to put it here, and it may post a distraction. Are you able to reproduce the crash using the .tm file?
POSTED BY: xslittlegrass *

So tmp.mx was written out by the same kernel (10.3.0) that was reading it? That's an important detail, which was not clear from the original post.

Yes, I can reproduce the problem. For a workaround, do something like 

kernel = Developer`ToPackedArray[kernel]; ls = Developer`ToPackedArray[ls];
ListCorrelate[kernel, ls , {1, -1}, {}, (#1 - #2)^2 &, Plus]

(* {{1.5540002094334583*^-12, 2.0211107898971485*^-12, 2.7383672401650275*^-12}, 
    {1.1629671425624623*^-12, 1.7229776437865533*^-12, 2.4651739282780577*^-12}, 
    {4.02571661001392*^-12, 4.868779739861625*^-12, 5.85705269642223*^-12}} *)

The code that generates the .mx file is needed for easier debugging. It's not necessary to post it here, but if you could forward it to support@wolfram.com, I assure you it won't be a distraction.
POSTED BY: Ilian Gachevski
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