ulimit stack size and python threads

[MRAB]

Greg Lindahl wrote:
>> I'm only guessing, but could it be a 32-bit limit somewhere? Have you
>> tried, say, 1GB, which would be within a 32-bit limit?
> 
> Indeed, ulimit -s 1000000 (a bit smaller than 1 GB) does work, but it
> doesn't solve my problem, since I want to set the limit higher than 1
> GB.
> 
How much higher? You could try just under 4GB (unsigned 32-bit) and just 
under 2GB (signed 32-bit).