<s>
The	O
OnlineHPC	B-Language
was	O
a	O
free	O
public	O
web	O
service	O
that	O
supplied	O
tools	O
to	O
deal	O
with	O
high	B-Architecture
performance	I-Architecture
computers	I-Architecture
and	O
online	O
workflow	B-Operating_System
editor	O
.	O
</s>
<s>
OnlineHPC	B-Language
allowed	O
users	O
to	O
design	O
and	O
execute	O
workflows	B-Operating_System
using	O
the	O
online	O
workflow	B-Operating_System
designer	O
and	O
to	O
work	O
with	O
high	B-Architecture
performance	I-Architecture
computers	I-Architecture
–	O
clusters	O
and	O
clouds	O
.	O
</s>
<s>
Access	O
to	O
high	O
performance	O
resources	O
was	O
available	O
as	O
directly	O
from	O
the	O
service	O
user	O
interface	O
,	O
as	O
from	O
workflow	B-Operating_System
components	O
.	O
</s>
<s>
The	O
workflow	B-Operating_System
engine	O
of	O
the	O
OnlineHPC	B-Language
service	O
was	O
Taverna	B-Application
as	O
traditionally	O
used	O
for	O
scientific	B-Application
workflow	I-Application
execution	O
in	O
such	O
domains	O
,	O
as	O
bioinformatics	O
,	O
cheminformatics	O
,	O
medicine	O
,	O
astronomy	O
,	O
social	O
science	O
,	O
music	O
,	O
and	O
digital	O
preservation	O
.	O
</s>
<s>
OnlineHPC	B-Language
was	O
started	O
at	O
the	O
Institute	O
for	O
Information	O
Transmission	O
Problems	O
in	O
2012	O
as	O
a	O
project	O
for	O
the	O
institute	O
’s	O
researchers	O
whose	O
work	O
need	O
access	O
to	O
computer	B-Architecture
clusters	I-Architecture
and	O
who	O
are	O
not	O
professional	O
programmers	O
.	O
</s>
<s>
The	O
project	O
motivation	O
is	O
that	O
there	O
is	O
a	O
gap	O
between	O
researcher	O
skills	O
and	O
competence	O
level	O
needed	O
to	O
run	O
high	B-Architecture
performance	I-Architecture
computing	I-Architecture
.	O
</s>
<s>
Researcher	O
needs	O
to	O
get	O
familiar	O
with	O
such	O
technologies	O
and	O
tools	O
as	O
MPI	B-Application
,	O
batch	B-Architecture
task	I-Architecture
managers	I-Architecture
or	O
even	O
web	O
services	O
.	O
</s>
<s>
The	O
service	O
aims	O
to	O
reduce	O
the	O
barriers	O
by	O
providing	O
a	O
complete	O
pre-configured	O
set	O
of	O
tools	O
required	O
for	O
work	O
with	O
computer	B-Architecture
clusters	I-Architecture
:	O
in-browser	O
terminal	O
emulator	O
,	O
files	O
system	O
browser	O
,	O
credentials	O
manager	O
and	O
massive	O
task	O
tool	O
.	O
</s>
<s>
After	O
a	O
while	O
,	O
it	O
became	O
obvious	O
that	O
engineering	O
and	O
scientific	O
tasks	O
require	O
a	O
more	O
elaborate	O
tool	O
suit	O
that	O
enables	O
researchers	O
to	O
execute	O
the	O
flow	O
of	O
tasks	O
–	O
workflows	B-Operating_System
.	O
</s>
<s>
Unless	O
there	O
is	O
a	O
number	O
of	O
scientific	B-Application
workflow	I-Application
implementations	O
,	O
they	O
are	O
almost	O
all	O
desktop	O
applications	O
and	O
thus	O
the	O
aim	O
was	O
creating	O
an	O
online	O
environment	O
with	O
a	O
focus	O
on	O
simplicity	O
and	O
enhanced	O
user	O
experience	O
.	O
</s>
<s>
OnlineHPC	B-Language
had	O
a	O
workflow	B-Operating_System
designer	O
available	O
online	O
using	O
major	O
browsers	O
(	O
Firefox	O
,	O
Chrome	O
and	O
Internet	O
Explorer	O
)	O
on	O
desktops	O
and	O
tablets	O
.	O
</s>
<s>
Workflows	B-Operating_System
in	O
OnlineHPC	B-Language
included	O
components	O
for	O
:	O
</s>
<s>
SOAP/WSDL	O
and	O
REST	O
Web	O
services	O
,	O
special	O
component	O
for	O
the	O
BioMart	B-Application
web	O
service	O
.	O
</s>
