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There is so much information available for Java--the internal details of (for example) the JVM memory manager are well-documented, and the performance considerations arising from its interaction with user code have been publicly discussed. I am interested to know if there is any comparable documentation for the Mathematica kernel. Specifically:

  • What are the major steps involved in evaluation?
  • Which of these are the most important from a performance standpoint?

Is there any public documentation available about how all of this is implemented? If there is, I wasn't able to find it after searching the Internet: neither the mechanics of the evaluation process, nor the internal workings of particular functions, seem to be known outside of WRI.

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Have a look here. –  Daniel Lichtblau Mar 4 '13 at 19:06
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@Oleksandr R. quite the edit! –  Yves Klett Mar 4 '13 at 19:35
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This question may be a duplicate of this one. –  m_goldberg Mar 4 '13 at 19:36
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See if you can find a copy of book Power Programming With Mathematica: The Kernel by David B. Wagner, McGraw-Hill, 1996, in a library. It's out-of-print and hard to find, unfortunately, but it contains the best description I know of on how the kernel works. –  m_goldberg Mar 4 '13 at 19:40
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@OleksandrR. Seeing your work I feel it should be possible to upvote edits. –  Sjoerd C. de Vries Mar 4 '13 at 20:16

1 Answer 1

To give references to the first part of your question:

The best description about the main evaluation loop I have ever read can be found in (as already stated in the comments) Power Programming with Mathematica: The Kernel by David Wagner. A free pdf version of this book can be downloaded here. Therein, he refers to the tutorial Mathematica Internals: A Tutorial by David Withoff.

Although, these documents are rather old, I'm pretty sure they are still correct since this topic covers the core evaluation process which hasn't changed.

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Is there an alternative version of Withoff's article? I cannot open the postscript in the provided link, (I tried with many linux programs). –  alfC Oct 27 at 7:19
    
Also a fresh link for the book data.wolframmathematica.ru/working-files/… (it is supposedly public domain now) –  alfC Oct 27 at 7:26

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