<s>
oneAPI	B-Operating_System
is	O
an	O
open	O
standard	O
,	O
trademarked	O
by	O
Intel	O
,	O
for	O
a	O
unified	O
application	B-Application
programming	I-Application
interface	I-Application
intended	O
to	O
be	O
used	O
across	O
different	O
compute	O
accelerator	B-General_Concept
(	O
coprocessor	B-General_Concept
)	O
architectures	O
,	O
including	O
GPUs	B-Architecture
,	O
AI	B-General_Concept
accelerators	I-General_Concept
and	O
field-programmable	B-Architecture
gate	I-Architecture
arrays	I-Architecture
.	O
</s>
<s>
The	O
oneAPI	B-Operating_System
specification	B-Application
extends	O
existing	O
developer	O
programming	O
models	O
to	O
enable	O
multiple	O
hardware	O
architectures	O
through	O
a	O
data-parallel	O
language	O
,	O
a	O
set	O
of	O
library	O
APIs	B-Application
,	O
and	O
a	O
low-level	O
hardware	O
interface	O
to	O
support	O
cross-architecture	O
programming	O
.	O
</s>
<s>
It	O
builds	O
upon	O
industry	O
standards	O
and	O
provides	O
an	O
open	O
,	O
cross-platform	B-Operating_System
developer	O
stack	O
.	O
</s>
<s>
DPC++	O
is	O
an	O
open	O
,	O
cross-architecture	O
language	O
built	O
upon	O
the	O
ISO	O
C++	O
and	O
Khronos	B-Library
Group	I-Library
SYCL	B-Language
standards	O
.	O
</s>
<s>
DPC++	O
is	O
an	O
implementation	O
of	O
SYCL	B-Language
with	O
extensions	O
that	O
are	O
proposed	O
for	O
inclusion	O
in	O
future	O
revisions	O
of	O
the	O
SYCL	B-Language
standard	O
.	O
</s>
<s>
An	O
example	O
of	O
this	O
is	O
the	O
contribution	O
of	O
unified	O
shared	O
memory	O
,	O
group	O
algorithms	O
and	O
sub-groups	O
to	O
SYCL	B-Language
2020	O
.	O
</s>
<s>
The	O
set	O
of	O
APIs	B-Application
spans	O
several	O
domains	O
that	O
benefit	O
from	O
acceleration	O
,	O
including	O
libraries	O
for	O
linear	O
algebra	O
math	O
,	O
deep	O
learning	O
,	O
machine	O
learning	O
,	O
video	O
processing	O
,	O
and	O
others	O
.	O
</s>
<s>
The	O
oneAPI	B-Operating_System
documentation	O
also	O
lists	O
the	O
"	O
Level	O
Zero	O
"	O
API	B-Application
defining	O
the	O
low-level	O
direct-to-metal	O
interfaces	O
and	O
a	O
set	O
or	O
ray	B-Algorithm
tracing	I-Algorithm
components	O
with	O
its	O
own	O
APIs	B-Application
.	O
</s>
<s>
oneAPI	B-Operating_System
Level	O
Zero	O
,	O
the	O
low-level	O
hardware	O
interface	O
,	O
defines	O
a	O
set	O
of	O
capabilities	O
and	O
services	O
that	O
a	O
hardware	B-General_Concept
accelerator	I-General_Concept
needs	O
to	O
interface	O
with	O
compiler	O
runtimes	O
and	O
other	O
developer	O
tools	O
.	O
</s>
<s>
Intel	O
has	O
released	O
production	O
quality	O
oneAPI	B-Operating_System
toolkits	O
that	O
implement	O
the	O
specification	B-Application
and	O
add	O
CUDA	B-Architecture
code	O
migration	O
,	O
analysis	O
,	O
and	O
debug	O
tools	O
.	O
</s>
<s>
These	O
include	O
the	O
Intel	B-Language
oneAPI	I-Language
DPC++	I-Language
/C	I-Language
++	I-Language
Compiler	I-Language
,	O
Intel	B-Language
Fortran	I-Language
Compiler	I-Language
,	O
Intel	B-Application
VTune	I-Application
Profiler	O
and	O
multiple	O
performance	O
libraries	O
.	O
</s>
<s>
Codeplay	O
has	O
released	O
an	O
open-source	B-Application
layer	O
to	O
allow	O
oneAPI	B-Operating_System
and	O
SYCL/DPC	B-Language
++	I-Language
to	O
run	O
atop	O
Nvidia	O
GPUs	B-Architecture
via	O
CUDA	B-Architecture
.	O
</s>
<s>
University	O
of	O
Heidelberg	O
has	O
developed	O
a	O
SYCL/DPC	B-Language
++	I-Language
implementation	O
for	O
both	O
AMD	O
and	O
Nvidia	O
GPUs	B-Architecture
.	O
</s>
<s>
Fujitsu	O
has	O
created	O
an	O
open-source	B-Application
ARM	B-Architecture
version	O
of	O
the	O
oneAPI	B-Operating_System
Deep	O
Neural	O
Network	O
Library	O
(	O
oneDNN	O
)	O
for	O
their	O
Fugaku	B-Device
CPU	I-Device
.	O
</s>
