<s>
Christofari	B-Device
—	O
are	O
Christofari	B-Device
(	O
2019	O
)	O
,	O
Christofari	B-Device
Neo	O
(	O
2021	O
)	O
supercomputers	B-Architecture
of	O
Sberbank	O
based	O
on	O
Nvidia	O
corporation	O
hardware	O
Sberbank	O
of	O
Russia	O
and	O
Nvidia	O
.	O
</s>
<s>
Their	O
main	O
purpose	O
is	O
neural	B-Architecture
network	I-Architecture
learning	O
.	O
</s>
<s>
The	O
supercomputers	B-Architecture
are	O
named	O
after	O
,	O
the	O
first	O
customer	O
of	O
Sberbank	O
,	O
holder	O
of	O
the	O
Bank	O
's	O
first	O
savings	O
account	O
passbook	O
.	O
</s>
<s>
The	O
supercomputers	B-Architecture
are	O
listed	O
in	O
the	O
Top	B-Operating_System
500	I-Operating_System
ranking	O
of	O
most	O
powerful	O
commercially	O
available	O
computer	O
systems	O
.	O
</s>
<s>
Sberbank	O
presented	O
the	O
supercomputers	B-Architecture
together	O
with	O
its	O
subsidiary	O
SberCloud	O
.	O
</s>
<s>
In	O
December	O
2019	O
,	O
Sberbank	O
and	O
SberCloud	O
commercially	O
launched	O
the	O
Christofari	B-Device
supercomputer	B-Architecture
.	O
</s>
<s>
Within	O
a	O
year	O
,	O
the	O
power	O
of	O
Christofari	B-Device
became	O
the	O
foundation	O
of	O
a	O
cloud	O
based	O
ML	O
Space	O
platform	O
.	O
</s>
<s>
The	O
more	O
powerful	O
Christofari	B-Device
Neo	O
supercomputer	B-Architecture
was	O
presented	O
at	O
the	O
AI	B-Application
Journey	O
international	O
conference	O
in	O
November	O
2021	O
by	O
David	O
Rafalovsky	O
,	O
the	O
CTO	O
of	O
Sberbank	O
Group	O
.	O
</s>
<s>
The	O
supercomputers	B-Architecture
can	O
be	O
used	O
by	O
scientific	O
,	O
commercial	O
and	O
government	O
organizations	O
working	O
in	O
the	O
various	O
sectors	O
of	O
the	O
economy	O
.	O
</s>
<s>
The	O
machines	O
were	O
developed	O
to	O
work	O
with	O
artificial	B-Application
intelligence	I-Application
algorithms	O
,	O
neural	B-Architecture
network	I-Architecture
learning	O
,	O
and	O
inference	O
of	O
various	O
models	O
.	O
</s>
<s>
Sber	O
uses	O
Christofari	B-Device
for	O
internal	O
tasks	O
e.g.	O
</s>
<s>
The	O
SberDevices	O
and	O
Sber	O
AI	B-Application
teams	O
were	O
the	O
first	O
who	O
received	O
access	O
to	O
Christofari	B-Device
Neo	O
.	O
</s>
<s>
They	O
developed	O
the	O
first	O
service	O
based	O
on	O
the	O
DALL-E	B-General_Concept
neural	B-Architecture
network	I-Architecture
that	O
generates	O
images	O
from	O
queries	O
in	O
Russian	O
.	O
</s>
<s>
The	O
power	O
of	O
supercomputers	B-Architecture
is	O
also	O
provided	O
to	O
other	O
organizations	O
when	O
connecting	O
the	O
services	O
of	O
the	O
cloud	O
platform	O
SberCloud	O
ML	O
Space	O
.	O
</s>
<s>
The	O
first	O
supercomputer	B-Architecture
was	O
presented	O
by	O
Herman	O
Gref	O
,	O
CEO	O
of	O
Sberbank	O
,	O
and	O
David	O
Rafalovsky	O
,	O
CTO	O
of	O
Sberbank	O
Group	O
,	O
on	O
8	O
November	O
2019	O
,	O
at	O
the	O
AI	B-Application
Journey	O
conference	O
in	O
Moscow	O
.	O
</s>
<s>
As	O
of	O
March	O
2020	O
,	O
this	O
is	O
the	O
only	O
supercomputer	B-Architecture
in	O
Russia	O
designed	O
specifically	O
for	O
working	O
with	O
artificial	B-Application
intelligence	I-Application
algorithms	O
.	O
</s>
<s>
It	O
is	O
capable	O
of	O
training	O
software	O
models	O
based	O
on	O
complex	O
neural	B-Architecture
networks	I-Architecture
in	O
unprecedentedly	O
short	O
time	O
,	O
it	O
's	O
Russia	O
's	O
fastest	B-Operating_System
supercomputer	I-Operating_System
.	O
</s>
<s>
The	O
Christofari	B-Device
machines	O
are	O
based	O
on	O
Nvidia	B-Operating_System
DGX-2	I-Operating_System
nodes	O
equipped	O
with	O
Tesla	B-Operating_System
V100	O
graphics	O
accelerators	O
.	O
</s>
<s>
The	O
InfiniBand	B-Architecture
network	O
based	O
on	O
Mellanox	O
hardware	O
is	O
used	O
for	O
an	O
interconnection	O
.	O
</s>
<s>
Effective	O
performance	O
is	O
about	O
6.7	O
petaflops	O
,	O
which	O
makes	O
it	O
the	O
40th	O
most	B-Operating_System
powerful	I-Operating_System
system	I-Operating_System
in	I-Operating_System
the	I-Operating_System
world	I-Operating_System
(	O
at	O
the	O
time	O
of	O
launch	O
on	O
8	O
November	O
2019	O
)	O
,	O
the	O
7th	O
in	O
Europe	O
,	O
and	O
the	O
1st	O
in	O
Russia	O
(	O
the	O
results	O
of	O
the	O
previous	O
Russian	O
leader	O
—	O
the	O
Lomonosov-2	O
system	O
—	O
were	O
exceeded	O
by	O
more	O
than	O
two	O
times	O
)	O
.	O
</s>
<s>
This	O
is	O
the	O
first	O
supercomputer	B-Architecture
of	O
a	O
financial	O
organization	O
in	O
the	O
world	O
available	O
for	O
third-party	O
users	O
.	O
</s>
<s>
It	O
is	O
also	O
the	O
first	O
supercomputer	B-Architecture
certified	O
in	O
Russia	O
to	O
work	O
with	O
personal	O
data	O
.	O
</s>
<s>
The	O
DGX	O
servers	O
are	O
connected	O
via	O
Mellanox	O
switches	O
with	O
36-ports	O
,	O
supporting	O
up	O
to	O
four	O
InfiniBand	B-Architecture
EDR	O
connections	O
at	O
100	O
Gbit/s	O
.	O
</s>
<s>
Almost	O
the	O
entire	O
machine	O
learning	O
stack	O
in	O
use	O
is	O
oriented	O
on	O
the	O
Ubuntu	B-Operating_System
operating	I-Operating_System
system	I-Operating_System
as	O
the	O
base	O
platform	O
.	O
</s>
<s>
The	O
machines	O
utilize	O
a	O
modified	O
server	O
version	O
of	O
an	O
Ubuntu	B-Operating_System
18.04	O
LTS	O
operating	O
system	O
.	O
</s>
<s>
The	O
package	O
also	O
includes	O
proprietary	O
software	O
from	O
Nvidia	B-Architecture
CUDA	I-Architecture
Toolkit	O
,	O
cuDNN	O
,	O
NCCL	O
,	O
and	O
Docker	O
Engine	O
Utility	O
for	O
GPU	O
Nvidia	O
(	O
the	O
entire	O
main	O
machine	O
learning	O
stack	O
runs	O
in	O
containers	O
)	O
.	O
</s>
<s>
The	O
supercomputer	B-Architecture
is	O
located	O
in	O
the	O
Sberbank	O
data	O
center	O
(	O
DC	O
)	O
in	O
the	O
Skolkovo	O
Innovation	O
Center	O
in	O
Moscow	O
,	O
Russia	O
.	O
</s>
<s>
The	O
second	O
supercomputer	B-Architecture
is	O
also	O
built	O
on	O
the	O
basis	O
of	O
Nvidia	O
technologies	O
and	O
is	O
equipped	O
with	O
Nvidia	O
A100	O
GPUs	O
with	O
80	O
GB	O
of	O
memory	O
.	O
</s>
<s>
For	O
an	O
interconnection	O
is	O
used	O
the	O
high-speed	O
switching	O
InfiniBand	B-Architecture
network	O
,	O
which	O
provides	O
the	O
speed	O
of	O
data	O
exchange	O
up	O
to	O
1600	O
GB/s	O
per	O
each	O
compute	O
node	O
and	O
minimal	O
latency	O
.	O
</s>
<s>
November	O
2021	O
—	O
7th	O
place	O
in	O
the	O
HPL-AI	O
rating	O
of	O
supercomputers	B-Architecture
and	O
artificial	B-Application
intelligence	I-Application
;	O
</s>
