Commit 57974ef3 authored by Mat's avatar Mat
Browse files

Add FAQ entry about array incompatibility with the new version. 

Arrays created with previous versions of SharedArray aren't compatible
with the new version. That's unfortunate, though hopefully not a bit
issue.
parent 69c47167

README.md

+8 −0
Original line number Diff line number Diff line
@@ -108,6 +108,14 @@ Also you can make the change permanent, on next boot, by setting 
`SHM_SIZE=100%` in `/etc/defaults/tmpfs` on recent Debian/Devuan

installations.



### I can't attach old (pre 0.4) arrays anymore.



Since version 0.4 all arrays are now page aligned in memory, to be

used with SIMD instructions (e.g. fftw library). As a side effect,

arrays created with a previous version of SharedArray aren't

compatible with the new version (the location of the metadata

changed). Save your work before upgrading.



Installation

------------