[ODE] ODE stack usage

[Olivier Michel]

Hi,

The patch is still there, waiting for someone to commit it in:

http://cyberboticspc1.epfl.ch/ftp/ode_dynamic_memory.tar.bz2 (49k)

It allows you to get rid of stack overflow problem definitively. The 
counterpart is that it slows down ODE a little bit. This is not a 
dangerous patch as it corresponds to a compilation option which is 
disabled by defaut in the config/user-settings. Hence the resulting 
patched version of ODE behaves exactly as the non-patched version, 
except if you set the DYNAMIC_MEMORY_ALLOCATION flag in the 
config/user-settings file before compiling.

It would be nice to commit it since some people already have ideas on 
how to improve this patch. Moreovoer, it has been used by several people 
without any problems (it has been around for more than 3 months now).

Thanks.

-Olivier

Adam D. Moss wrote:

> Dominic Jackson wrote:
>
>> I am currently experimenting with ODE and am continually running out 
>> of stack space (I assume this is due to the large number of alloca 
>> calls).
>>
>> Can anyone help me with this as I need to put strict controls on 
>> memory usage, or has anyone come across similar issues that they have 
>> found ways to resolve ?
>
>
> There's a patch floating around (with a bit more positive feedback
> and a bit more time I'll check it in :)) which optionally enormously
> reduces ODE's stack usage (even if you're using QuickStep, which I
> expect you're using if you care about stack space usage anyway!).
>
> Hmm, probably check out a non-broken list archive near you if
> interested....
>
> ODE nonetheless promises no 'strict' controls on stack usage.  YMMV.
>
> --Adam
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