[cfarm-users] cfarm26 FP inaccuracies

[Olly Betts]

On Sun, Aug 30, 2026 at 01:38:52PM +0200, Martin Guy via cfarm-users wrote:
> As to why the SSE instruction set is disabled on Debian bookworm's gcc...
> both machines' /proc/cpuinfo report sse and sse2.

Debian's "i386" architecture baseline didn't include SSE until trixie
which is the release after bookworm.  The bookworm baseline was i686:

https://wiki.debian.org/ArchitectureSpecificsMemo#i386-1

The packaged GCC is configured so by default it generates code that will
run on the baseline architecture.

(The architecture is named "i386" for historical reasons - actual i386
hasn't been supported since 2006.)

Cheers,
    Olly