Default stack size

Orion Poplawski orion at
Wed Mar 25 21:23:50 UTC 2015

On 03/24/2015 06:19 AM, Richard W.M. Jones wrote:
> For the OCaml packages on ppc64/ppc64le, we keep having bugs like this
> one:
> The OCaml compiler is quite recursive, and so it can easily overflow
> the default stack.  For reasons that are not entirely clear this
> happens only on ppc64/ppc64le (not on x86 or aarch64).  Perhaps POWER
> stack frames are bigger, or the default stack size is smaller.
> One way to "fix" this would be to modify every single ocaml-* spec
> file to add:
> %ifarch %{power64}
> ulimit -s 65536
> %endif

FWIW - coincidentally I just ran into a similar issue building gdl on EPEL6
for x86_64.  I couldn't reproduce it locally because I bump up the default
stack limit a bit on my machines.  It does appear that the default may be a
bit too constrained.

Orion Poplawski
Technical Manager                     303-415-9701 x222
NWRA, Boulder/CoRA Office             FAX: 303-415-9702
3380 Mitchell Lane                       orion at
Boulder, CO 80301         

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