whoa was that a 10 Gigabyte file
transferring in just a few seconds what
if I told you it was between two
separate machines and then what if I
told you we did it for less than $100 worth of used parts off eBay and
less than an hour of tweaking within
Windows well it's true and you could do
it
too I by power and MSI's new lineup of
gaming laptops feature Intel's 7th generation core i7 processors check them
out at the link below our
Jour excuse me our journey began when I
spotted a post on the Linus Tech tips for Forum where a user was showing off a
local networking setup that boasted speeds three to four times higher than
the one that we used in our guide to 10x
in your network speed on a budget and at
a lower price using secondhand
Enterprise networking gear called
infiniband so I sprung into action
drafting an email to Jake that went something like hey this looks really
cool but I'm super busy can you figure out what the junk is going on with this
and he was like okay this looks pretty
simple I order the cards in the post and a qsfp copper direct attached cable plug
them in and it's Off to the Races right wrong the quad data rate or QDR 40 gbit
infiniband cards we got off eBay were made by Q Logic a company that was
acquired by Intel who doesn't provide
Windows drivers and while showing these
speeds on Linux would have been really cool the majority of our audience runs
Windows so round two fight we began with high
hopes for the MH rh2 A-
xsr even though we couldn't find it on melanox website only to have them dashed
by an inaccurate product listing the
second one we bought is a d double data
rate card and I've been informed that 20
gbit transfer speeds are so last week l
i not to be dissuaded from spending my money by the first two unsuccessful
attempts Jake ordered a third pair of
infin band adapters melanox mhq 19B
dxtrs for 25 bucks each and a 5 m or 15t
qsfp copper direct attach cable for 30
bucks putting our total cost at
$80 and still under $150 for a much
longer link with a 45t cable running you
about $90 the cards are PCI Express Gen 2 and
should fit in any reasonably modern computer so install then in Windows
device manager you should see melanox
connect X2 IPI B adapter if they don't
show up then install the wiof archive
version 4.95 then update it to 5.10 for
the most stable results theoretically
this will update your cards to the latest firmware but if it didn't we will
have a blog post on the LT Forum that outlines the detailed steps for forcing
this manually as well as some other details about the process check it out
below with the cards recognized we have functioning infiniband NYX but no subnet
manager which assigns an ID to the Nyx
and creates a routing table based off that so effectively then there's no way
for them to receive or send anything since one of the most likely use cases
for something like this would be a high-speed SMB or I scuzzy server and a
preferred client somewhere else on the network we opted to install op SM on the
test bench representing our file server
again you can find the full details in the blog post we're getting close to the
end now we need to assign IP addresses to our infiniband adapters but since
they can't be used to communicate with the other Ethernet and Wi-Fi devices on
our Network we want to put them on a separate subnet and keep our normal
Ethernet plugs plugged into the motherboard so if your home network is1
21680 something then you could go with
192.168.1 something let's say 20 for our
server and 21 for our game machine
almost there except the new network pop
up on both machines run a quick ping test to make sure they can see each
other then to ensure that the higher
speed link is used when transferring data between the two machines adjust
their priority by changing automatic metric to some number we chose 20 for
our onboard Ethernet and 10 for our
infiniband and Bam you should have a 40
gigabit link though please note it'll show up as 32 gbit due to 810 encoding
and all that's missing now is some kind of drive that can actually saturate that
kind of a connection fortunately we
still have those 16 gig sticks of Dominator Platinum that we were supposed
to send back to Corsair but then our PR rep left and didn't tell anybody and our
buds over at soft perfect hooked us up with their RAM dis software 7 GB per
second anybody unfortunately on consumer
versions of Windows we didn't see quite the results we were hoping for latencies
were still super low which makes sense
since infiniband is an Enterprise technology intended for storage area
networks but we capped out at about one
Gigabyte per second for our maximum
bandwidth file transfer tests similar to
10 GB Ethernet so what gives well the
answer is RDMA on Windows server or
Linux we could expect much better perhaps a followup later let us know in
the comments if you'd like to see that either way we're pleased as punch with
the results because compared to 10 GB Ethernet we do lose the interoperability
with other Ethernet gear but we gain the
same transfer speeds as long as all we're looking for is point to point and
a whole lot of money to put back into our
wallets so this is an interesting one we've got today this is the tma2 modular
headphone system from II it lets you create your own
headphones providing a vast range of interchangeable options through their
configuration at you can change the headband you can change the speaker
units you can change the ear pads and even the cables although that last one
is sort of more normal everything else though is like freaking crazy there's
over a thousand different total combinations that you can build
depending on whether they're for everyday use DJing studio recording or
you want something that's really light and portable and not just that they can
be taken back apart and recombined with
add-on parts that you can get down the road if for whatever reason you want to
change up the experience so check out their configurator at the link in the
video description and build your own today so thanks for watching guys
dislike or a like get subscribed maybe check out the link to where to buy the
stuff we featured in the video description also down there is our merch
store where you can buy cool shirts and posters and all that kind of stuff as well as our community form which you
should totally join now that you're done doing all that stuff check out this
latest video over on uh oh actually I don't know what videos we featuring now
so check out a video it'll it'll show up or something