D2 3 Computing e-Infrastructure cost calculations and business _models_vam1-final

e-­‐FISCAL: www.efiscal.eu
EC Contract Number: 283449
(a) HS06 for M3 Double XL – Intel
(b) Resource subscription impact
HS06 Score HS06 Score
160
140
120
100
80
60
40
20
0
160
140
120
100
80
60
40
20
0
Bare Metal 1 + 3 VMs
Bare Metal 1 + 3 VMs
HTC
EC2
4 HS06
HTC
EC2
4 HS06
160
140
120
100
80
60
40
20
0
160
140
120
100
80
60
40
20
0
No Oversubscripqon
Increased Subscripqon
Overcomitment
Bare Metal 1 + 3 VMs 4 HS)6
No Oversubscripqon
Increased Subscripqon
Overcomitment
Bare Metal 1 + 3 VMs 4 HS)6
HTC Number of VMs = 4
HTC Number of VMs = 4
The above graph (a) demonstrates the HEPSEPC06 scores comparison for the EC2 M3 Double Extra Large instances
and corresponding in-­‐house HTC instances at INFN with the Intel processors. From the graphs following
observations could be made (in addition to what has already been discussed):
• 37.79% average performance loss (ranging from 8.81-­‐54.98%) while comparing the HEPSEPC06 scores
between M3 Double Extra-­‐Large EC2 and corresponding in-­‐house HTC instances at INFN.
In addition, (b) displays the HEPSPEC score trends with the increasing level of resource subscription and over-­subscription.
In the bare-­‐metal case there is no memory over-­‐subscription, as memory is solely utilized by one
instance. In the second case, memory resource is shared amongst 4 VMs, where only one is running the
HEPSPEC06 benchmark and rest of the three virtual machines are idle. We can see that there is no significant
effect of increasing the memory subscription as long as it stays below the available memory size. The third case
where all four virtual machines are running HEPSEPC06 and memory is stressed across the physical machine, it is
clear that oversubscription of only the memory resource decreases the HEPSEPC06 score (thus increases the
performance loss). Although more detailed test case is required to fully understand the effect of resource
oversubscription.
e-­‐FISCAL : Financial Study for Sustainable Computing e-­‐Infrastructures
Deliverable D2.3 – Computing e-­‐Infrastructures cost estimation and analysis – Pricing and
Business models
101