On Mon, 4 Mar 2013, Peter Vincent Homeier wrote:

> There was a bug in the previous version of the HOL-Omega system which
> prevented it from building with Poly/ML 5.5, the current version of Poly/ML.
>
> This has been fixed and posted to the public repository for HOL-Omega, 
> and the current version should build correctly. If anyone has tried 
> building HOL-Omega and been frustrated, please try again with this new 
> version of HOL-Omega.

In your changeset https://github.com/mn200/HOL/commit/9b92ae9 you say

   ... caused a type error with Poly/ML version 5.5. This is a difference
   from Poly/ML version 5.3.

Does it mean you were still using old Poly/ML 5.3 until recently?

For Isabelle, the advances from 5.3 to 5.4 to 5.5 made a big difference in 
performance.  5.5 is particularly nice, since it allows to run even big 
sessions in plain-old 32bit address space -- due to the online sharing of 
immutable data that David Matthews is doing now for all of us.

How is the situation for HOL4 concerning Poly/ML performance?


        Makarius

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