<s>
GenevaERS	B-Application
is	O
an	O
enterprise	O
reporting	O
system	O
that	O
currently	O
executes	O
in	O
the	O
IBM	B-Device
mainframe	I-Device
z/OS	B-Application
environment	O
.	O
</s>
<s>
It	O
is	O
similar	O
to	O
MapReduce	B-Operating_System
or	O
Apache	B-Language
Spark	I-Language
but	O
predates	O
their	O
development	O
by	O
a	O
decade	O
.	O
</s>
<s>
It	O
was	O
designed	O
to	O
support	O
business	O
systems	O
using	O
William	O
McCarthy	O
's	O
theory	O
of	O
Resources	B-General_Concept
,	I-General_Concept
Events	I-General_Concept
,	I-General_Concept
Agents	I-General_Concept
.	O
</s>
<s>
GenevaERS	B-Application
was	O
created	O
by	O
PricewaterhouseCoopers	O
Consulting	O
as	O
part	O
of	O
their	O
practice	O
.	O
</s>
<s>
IBM	O
renamed	O
GenevaERS	B-Application
IBM	O
's	O
Scalable	B-Application
Architecture	I-Application
for	I-Application
Financial	I-Application
Reporting	I-Application
(	O
SAFR	B-Application
)	O
,	O
marketing	O
and	O
licensing	O
it	O
through	O
its	O
IBM	O
Global	O
Services	O
division	O
,	O
typically	O
with	O
customer-specific	O
services	O
.	O
</s>
<s>
The	O
product	O
solves	O
business	B-General_Concept
intelligence	I-General_Concept
problems	O
for	O
large	O
operational	O
databases	O
,	O
especially	O
in	O
insurance	O
and	O
financial	O
industries	O
.	O
</s>
<s>
GenevaERS	B-Application
is	O
also	O
popular	O
among	O
SAP	B-Application
and	O
other	O
ERP	O
system	O
users	O
,	O
including	O
manufacturing	O
companies	O
,	O
with	O
large	O
databases	O
and	O
significant	O
reporting	O
needs	O
.	O
</s>
<s>
(	O
Despite	O
the	O
SAFR	B-Application
name	O
,	O
GenevaERS	B-Application
is	O
not	O
confined	O
to	O
financial	O
industry	O
roles	O
.	O
)	O
</s>
<s>
In	O
July	O
2020	O
,	O
IBM	O
contributed	O
the	O
SAFR	B-Application
code	O
base	O
to	O
the	B-Operating_System
Linux	I-Operating_System
Foundation	I-Operating_System
's	O
Open	B-Application
Mainframe	I-Application
Project	I-Application
,	O
.	O
</s>
<s>
GenevaERS	B-Application
uses	O
a	O
"	O
single	O
pass	O
"	O
I/O	O
approach	O
and	O
takes	O
advantage	O
of	O
the	O
IBM	B-Device
mainframe	I-Device
's	O
parallelism	O
to	O
create	O
multiple	O
reports	O
concurrently	O
.	O
</s>
<s>
The	O
software	O
is	O
CPU-efficient	O
,	O
with	O
an	O
internal	O
capability	O
to	O
execute	O
report	O
queries	O
using	O
generated	O
,	O
high-performance	O
IBM	B-Device
Z	I-Device
assembler	O
code	O
.	O
</s>
<s>
Most	O
GenevaERS	B-Application
users	O
run	O
reports	O
daily	O
,	O
overnight	O
,	O
during	O
a	O
batch	O
window	O
,	O
but	O
jobs	O
can	O
run	O
at	O
any	O
time	O
,	O
including	O
concurrently	O
and	O
without	O
disruption	O
to	O
online	O
workloads	O
.	O
</s>
<s>
Additional	O
GenevaERS	B-Application
performance	O
optimizations	O
include	O
in-memory	O
join	O
processing	O
,	O
either	O
direct	O
access	O
or	O
through	O
a	O
technical	O
called	O
Common	O
Key	O
Buffer	O
joins	O
for	O
very	O
large	O
dimensional	O
tables	O
,	O
piping	O
from	O
one	O
process	O
to	O
another	O
,	O
and	O
Extract-Phrase	O
Record	O
Aggregation ]	O
to	O
immediately	O
collapse	O
data	O
for	O
summary	O
outputs	O
.	O
</s>
<s>
Although	O
GenevaERS	B-Application
can	O
access	O
multiple	O
types	O
of	O
mainframe-based	O
data	O
,	O
including	O
Db2	B-Application
and	O
VSAM	O
,	O
like	O
MapReduce	B-Operating_System
,	O
GenevaERS	B-Application
's	O
higher	O
performance	O
comes	O
with	O
the	O
use	O
of	O
sequential	O
files	O
.	O
</s>
<s>
GenevaERS	B-Application
processes	O
are	O
called	O
VIEWSs	O
,	O
and	O
any	O
number	O
of	O
VIEWs	O
can	O
be	O
run	O
in	O
one	O
pass	O
of	O
the	O
data	O
.	O
</s>
