[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <CAMrU6JAXg-iaYa3ADnXRCEjPJFEHFsWaB8RZA2kixmwg9=Dd+A@mail.gmail.com>
Date: Mon, 21 Oct 2024 11:00:31 -0500
From: David Sutherland <turnkit@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: older Intel Quick Assist (QAT) performance boost?
Very thorough response Alexander. Thank you.
Thanks for the time looking at that. I suspected it was so old it wouldn’t
yield much but I thought it worth the mention on the off chance there was
something there since the used prices are relatively inexpensive to the
original esoteric market price.
Nice that you’re so knowledgeable of all these implementation and
instruction details and have the visionary mindset still to consider
“what’s out of the box” and possible. (The whole project is great creative
out-of-box thinking.)
Thanks again.
Sent from Gmail Mobile
On Sun, Oct 20, 2024 at 5:41 PM Solar Designer <solar@...nwall.com> wrote:
> On Sun, Oct 20, 2024 at 11:01:51PM +0200, Solar Designer wrote:
> > On Sun, Oct 20, 2024 at 12:17:46PM -0500, David Sutherland wrote:
> > > Any thoughts on using now relatively inexpensive ($50 - $120) Intel
> Quick
> > > Assist cards like the 8950, 8970 to accelerate some hashing functions?
>
> > we have no support for these cards at all,
> > and aren't planning to add any.
>
> I may need to add: however, if the Linux distro or system has support
> integrated (or maybe dynamically loaded) into their OpenSSL or/and zlib,
> which we link against, then we could end up using the RSA or/and deflate
> acceleration in the few code places and use cases where this matters.
> So some speedup (or slowdown) or/and lower CPU load in some cases can't
> be ruled out, even with our existing code. I think this isn't a good
> enough reason for anyone to bother purchasing this card and configuring
> the system to use it (unless for fun and learning, expecting failure),
> but if you just happen to run John on a (former) web server with such
> acceleration pre-configured, it isn't impossible that something relevant
> might just happen to work. Potentially affected John formats include
> gpg(-opencl), pkzip, 7z(-opencl), but not for all kinds of their inputs.
> Speedup, if any, is expected to be small (slowdown is also possible).
>
> Alexander
>
Powered by blists - more mailing lists
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
