[isabelle-dev] Formula_Derivatives FAILED: Cannot allocate memory

David Matthews dm at prolingua.co.uk
Fri Feb 19 14:28:53 CET 2016

On 17/02/2016 21:47, Dmitriy Traytel wrote:
>> ML> Exception- SysErr ("Cannot allocate memory", SOME ENOMEM) raised

This looks like an attempt to allocate memory for something other than 
the heap.  There are quite a few situations where this can happen.

Try adding a --stackspace argument to reserve space for thread stacks 
and anything else. e.g.
ML_OPTIONS="--stackspace 200M"
This option keeps this space back whenever Poly tries to grow the heap 
to avoid the heap using all the available memory.  You may need to 
experiment a bit with how much to reserve depending on why the memory is 
required.  It is possible that you could still get the error if there is 
some sort of loop.


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