https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64247
Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
What |Removed |Added
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Summary|program result depends on |malloc alignment and -mavx
|environment ? |
--- Comment #4 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch>
---
I think we isolated the issue. With -mavx the numerical results seem to depend
on the precise alignment of allocated data from malloc, i.e. 16 or 32 (..E0 or
F0) byte are not equivalent. As a result, the results from our code fluctuate
randomly from run to run. Does that make sense ?
