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Re: [tor-bugs] #9663 [Tor]: Table-based basepoint multiply optimizations for ntor handshake
#9663: Table-based basepoint multiply optimizations for ntor handshake
-------------------------+-------------------------------------------------
Reporter: nickm | Owner:
Type: | Status: needs_revision
enhancement | Milestone: Tor: 0.2.7.x-final
Priority: normal | Version:
Component: Tor | Keywords: tor-relay, performance, ntor,
Resolution: | 026-triaged-0, 027-triaged-1-in
Actual Points: | Parent ID: #9662
Points: |
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Comment (by nickm):
Replying to [comment:18 yawning]:
> Replying to [comment:17 nickm]:
> > eg (untested)
> >
> > {{{
> > #if defined(__SSE2__) && !(defined(__x86_64__) || defined(__amd64__))
> > ....
> > #endif
> > }}}
> > ?
>
> This should work (might need `x86intrin.h`?).
(Probably won't need that; those are supposed to be predefined by the
compiler.)
> I'd like to see a comparison between ref10, 32 bit donna, and SSE2
donna before we go down this path, and for the purposes of the feature
branch as is, I will ignore the issue for now since doing the integration
work in a safe manner is more important.
Makes sense.
> Will we ever consider removing the ref10 code/fallback stuff? I don't
think it particularly makes a difference to how I'm going to do this, but
I think the portable versions of the donna code is well tested at this
point.
We can consider removing it, sure. I think I'd like to leave it in for a
while as a fallback though.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9663#comment:19>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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