<s>
Magerit	B-Architecture
is	O
the	O
name	O
of	O
the	O
one	O
of	O
the	O
most	O
powerful	O
supercomputers	B-Architecture
in	O
Spain	O
.	O
</s>
<s>
It	O
also	O
reached	O
the	O
second	O
best	O
Spanish	O
position	O
in	O
the	O
TOP500	B-Operating_System
list	B-Operating_System
of	I-Operating_System
supercomputers	I-Operating_System
.	O
</s>
<s>
Magerit	B-Architecture
was	O
first	O
installed	O
in	O
2006	O
and	O
reached	O
the	O
9th	O
fastest	O
in	O
Europe	O
and	O
the	O
34th	O
in	O
the	O
world	O
,	O
the	O
second	O
best	O
position	O
of	O
a	O
Spanish	O
supercomputer	B-Architecture
in	O
the	O
list	O
.	O
</s>
<s>
It	O
also	O
reached	O
the	O
275th	O
position	O
in	O
the	O
first	O
Green500	B-Application
list	O
published	O
.	O
</s>
<s>
It	O
is	O
no	O
longer	O
among	O
the	O
TOP500	B-Operating_System
.	O
</s>
<s>
It	O
also	O
reached	O
the	O
18th	O
position	O
in	O
the	O
Green500	B-Application
list	O
.	O
</s>
<s>
Magerit	B-Architecture
(	O
for	O
*	O
Materit	O
or	O
*	O
Mageterit	O
)	O
is	O
the	O
most	O
ancient	O
recorded	O
name	O
of	O
the	O
current	O
city	O
of	O
Madrid	O
.	O
</s>
<s>
Magerit	B-Architecture
was	O
created	O
as	O
a	O
collaboration	O
between	O
Technical	O
University	O
of	O
Madrid	O
and	O
IBM	O
.	O
</s>
<s>
Late	O
2006	O
CeSViMa	O
joins	O
Spanish	O
Supercomputing	B-Architecture
Network	O
(	O
Red	O
Española	O
de	O
Supercomputación	O
or	O
RES	O
in	O
Spanish	O
)	O
and	O
the	O
supercomputer	B-Architecture
was	O
upgraded	O
.	O
</s>
<s>
This	O
is	O
considered	O
the	O
first	O
version	O
due	O
to	O
its	O
inclusion	O
in	O
the	O
TOP500	B-Operating_System
list	O
in	O
the	O
34th	O
position	O
,	O
the	O
second	O
best	O
position	O
of	O
a	O
Spanish	O
supercomputer	B-Architecture
in	O
the	O
list	O
.	O
</s>
<s>
In	O
2007	O
the	O
first	O
users	O
from	O
the	O
access	O
committee	O
of	O
Spanish	O
Supercomputing	B-Architecture
Network	O
(	O
the	O
agreement	O
makes	O
that	O
the	O
Network	O
can	O
schedule	O
the	O
use	O
of	O
the	O
68%	O
of	O
the	O
resources	O
)	O
and	O
users	O
managed	O
at	O
local	O
(	O
CeSViMa	O
)	O
access	O
committee	O
(	O
using	O
the	O
other	O
32%	O
)	O
.	O
</s>
<s>
In	O
May	O
2008	O
,	O
CeSViMa	O
and	O
Magerit	B-Architecture
supercomputer	B-Architecture
migrated	O
to	O
a	O
new	O
building	O
in	O
the	O
same	O
campus	O
(	O
only	O
500	O
meters	O
from	O
previous	O
location	O
at	O
Computer	O
Science	O
School	O
)	O
.	O
</s>
<s>
This	O
upgrade	O
increase	O
the	O
power	O
of	O
the	O
supercomputer	B-Architecture
near	O
2	O
TFLOPS	O
reaching	O
15.95	O
TFLOPS	O
.	O
</s>
<s>
In	O
this	O
configuration	O
the	O
59.7	O
%	O
of	O
the	O
supercomputer	B-Architecture
CPU	O
time	O
is	O
assigned	O
via	O
RES	O
access	O
committee	O
and	O
40.3	O
%	O
is	O
assigned	O
via	O
CeSViMa	O
policies	O
.	O
</s>
<s>
During	O
2010	O
,	O
CeSViMa	O
acquire	O
a	O
new	O
massive	O
storage	O
system	O
with	O
1	O
petabyte	O
of	O
capacity	O
in	O
parallel	O
with	O
the	O
own	O
storage	O
of	O
Magerit	B-Architecture
.	O
</s>
<s>
The	O
new	O
distribution	O
of	O
use	O
is	O
80%	O
managed	O
by	O
CeSViMa-UPM	O
access	O
committee	O
and	O
20%	O
managed	O
by	O
Spanish	O
Supercomputing	B-Architecture
Network	O
.	O
</s>
<s>
Two	O
versions	O
of	O
the	O
supercomputer	B-Architecture
can	O
be	O
considered	O
:	O
</s>
<s>
The	O
full	O
upgrade	O
in	O
2011	O
that	O
makes	O
Magerit	B-Architecture
the	O
first	O
supercomputer	B-Architecture
of	O
Spain	O
.	O
</s>
<s>
This	O
setup	O
reached	O
the	O
second	O
best	O
position	O
in	O
the	O
TOP500	B-Operating_System
list	O
(	O
34th	O
,	O
November	O
2006	O
)	O
.	O
</s>
<s>
The	O
final	O
version	O
setup	O
(	O
reached	O
after	O
the	O
upgrade	O
of	O
2008	O
)	O
is	O
a	O
cluster	O
of	O
1204	O
nodes	O
eServer	B-Application
BladeCenter	B-General_Concept
(	O
1036	O
JS20	B-General_Concept
and	O
168	O
JS21	B-General_Concept
,	O
both	O
PowerPC	B-Architecture
64-bit	B-Device
)	O
under	O
SUSE	O
Linux	O
Enterprise	O
Server	O
9	O
.	O
</s>
<s>
Each	O
JS20	B-General_Concept
node	O
has	O
two	O
processors	O
IBM	B-Architecture
PowerPC	I-Architecture
single-core	O
970FX	O
(	O
two	O
cores	O
)	O
with	O
2.2	O
GHz	O
,	O
4	O
GB	O
of	O
RAM	B-Architecture
and	O
40	O
GB	O
of	O
local	O
hard	B-Device
disk	I-Device
.	O
</s>
<s>
Each	O
JS21	B-General_Concept
node	O
has	O
two	O
processors	O
IBM	B-Architecture
PowerPC	I-Architecture
dual-core	O
970FX	O
(	O
four	O
cores	O
)	O
with	O
2.2GHz	O
,	O
8	O
GB	O
of	O
RAM	B-Architecture
and	O
80	O
GB	O
of	O
local	O
hard	B-Device
disk	I-Device
.	O
</s>
<s>
The	O
system	O
has	O
a	O
distributed	O
storage	O
system	O
with	O
a	O
capacity	O
of	O
190	O
TB	O
under	O
GPFS	B-Application
.	O
</s>
<s>
All	O
the	O
nodes	O
are	O
interconnected	O
with	O
a	O
low	O
latency	O
(	O
2.6	O
–	O
3.2	O
μs	O
)	O
and	O
high	O
bandwidth	O
network	O
called	O
Myrinet	B-General_Concept
.	O
</s>
<s>
This	O
network	O
is	O
used	O
only	O
for	O
MPI	B-Application
messages	O
of	O
users	O
 '	O
tasks	O
.	O
</s>
<s>
This	O
setup	O
converts	O
Magerit	B-Architecture
into	O
the	O
most	O
powerful	O
supercomputer	B-Architecture
of	O
Spain	O
.	O
</s>
<s>
The	O
system	O
maintains	O
the	O
cluster	O
architecture	O
with	O
245	O
PS702	O
nodes	O
,	O
each	O
one	O
with	O
16	O
cores	O
in	O
two	O
64-bit	B-Device
processors	I-Device
POWER7	B-Device
(	O
eight	O
cores	O
each	O
)	O
3.0	O
GHz	O
,	O
32	O
GB	O
of	O
RAM	B-Architecture
and	O
300	O
GB	O
of	O
local	O
hard	B-Device
disk	I-Device
.	O
</s>
<s>
The	O
interconnection	O
was	O
replaced	O
with	O
an	O
Infiniband	B-Architecture
network	O
,	O
a	O
high-bandwidth	O
(	O
40	O
Gbit/s	O
)	O
and	O
low	O
latency	O
(	O
0.3	O
μs	O
)	O
.	O
</s>
<s>
The	O
storage	O
system	O
remains	O
the	O
same	O
(	O
192	O
TB	O
under	O
GPFS	B-Application
)	O
with	O
a	O
bandwidth	O
near	O
1	O
Tbit/s	O
.	O
</s>
<s>
The	O
upgrade	O
includes	O
an	O
update	O
of	O
the	O
software	O
:	O
operating	O
system	O
(	O
SLES11SP1	O
)	O
,	O
deployment	O
system	O
(	O
xCAT	B-Operating_System
,	I-Operating_System
eXtreme	I-Operating_System
Cluster	I-Operating_System
Administration	I-Operating_System
Toolkit	I-Operating_System
)	O
and	O
all	O
software	O
and	O
libraries	O
used	O
in	O
the	O
system	O
.	O
</s>
<s>
Magerit	B-Architecture
upgraded	O
with	O
Lenovo	O
ThinkSystem	O
SD530	O
nodes	O
.	O
</s>
<s>
Magerit	B-Architecture
processes	O
batch	B-General_Concept
jobs	I-General_Concept
with	O
large	O
processing	O
requirements	O
,	O
such	O
as	O
models	O
of	O
the	O
universe	O
,	O
simulations	O
of	O
materials	O
and	O
climate	O
models	O
.	O
</s>
<s>
The	O
supercomputer	B-Architecture
must	O
be	O
running	O
jobs	O
without	O
interrupts	O
all	O
the	O
year	O
.	O
</s>
<s>
The	O
use	O
of	O
a	O
queue	O
manager	O
of	O
batch	B-General_Concept
jobs	I-General_Concept
allows	O
a	O
global	O
scheduling	O
of	O
the	O
resources	O
increasing	O
the	O
use	O
of	O
the	O
resources	O
and	O
a	O
fair	O
play	O
between	O
users	O
.	O
</s>
<s>
Via	O
Spanish	O
Supercomputing	B-Architecture
Network	O
.	O
</s>
<s>
The	O
access	O
committee	O
evaluates	O
all	O
the	O
projects	O
and	O
can	O
assign	O
resources	O
on	O
any	O
other	O
supercomputer	B-Architecture
of	O
the	O
network	O
so	O
it	O
can	O
be	O
scheduled	O
in	O
the	O
20%	O
of	O
Magerit	B-Architecture
resources	O
managed	O
by	O
RES	O
.	O
</s>
