<s>
Global	B-Application
Address	I-Application
Space	I-Application
Programming	I-Application
Interface	I-Application
(	O
GPI	O
)	O
is	O
an	O
application	B-Application
programming	I-Application
interface	I-Application
(	O
API	B-Application
)	O
for	O
the	O
development	O
of	O
scalable	O
,	O
asynchronous	O
and	O
fault	O
tolerant	O
parallel	B-Operating_System
applications	I-Operating_System
.	O
</s>
<s>
It	O
is	O
an	O
implementation	O
of	O
the	O
partitioned	B-Application
global	I-Application
address	I-Application
space	I-Application
programming	O
model	O
.	O
</s>
<s>
In	O
2009	O
the	O
name	O
changed	O
to	O
Global	O
Address	O
Programming	B-Application
Interface	I-Application
or	O
GPI	O
.	O
</s>
<s>
In	O
2011	O
,	O
Fraunhofer	O
ITWM	O
and	O
its	O
partners	O
such	O
as	O
Fraunhofer	O
SCAI	O
,	O
TUD	O
,	O
T-Systems	O
SfR	O
,	O
DLR	O
,	O
KIT	O
,	O
FZJ	O
,	O
DWD	O
and	O
Scapos	O
have	O
initiated	O
and	O
launched	O
the	O
GASPI	O
project	O
to	O
define	O
a	O
novel	O
specification	O
for	O
an	O
API	B-Application
(	O
GASPI	O
based	O
on	O
GPI	O
)	O
and	O
to	O
make	O
this	O
novel	O
specification	O
a	O
reliable	O
,	O
scalable	O
and	O
universal	O
tool	O
for	O
the	O
HPC	O
community	O
.	O
</s>
<s>
GPI	O
has	O
completely	O
replaced	O
MPI	B-Application
at	O
Fraunhofer	O
ITWM	O
,	O
where	O
all	O
products	O
and	O
research	O
are	O
based	O
on	O
the	O
new	O
GPI-2	O
.	O
</s>
<s>
Failure	O
tolerant	O
parallel	B-Operating_System
programs	I-Operating_System
require	O
non-blocking	O
communication	O
calls	O
.	O
</s>
<s>
Based	O
on	O
GPI	O
,	O
Fraunhofer	O
has	O
also	O
developed	O
GPI-Space	B-Operating_System
,	O
a	O
distributed	O
run-time	O
system	O
for	O
parallel	B-Operating_System
programming	I-Operating_System
.	O
</s>
