Dell PowerEdge R820 - Manual (Page 24)

Performance Analysis of HPC Applications on Several Dell PowerEdge 12 th Generation Servers
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Results summary - performance Table 4.
Application PowerEdge M620
@ 2.7 GHz
(baseline) PowerEdge R820
@ 2.7 GHz PowerEdge M420
@ 2.3 GHz
HPL Similar performance to
PowerEdge R820 Similar performance to
PowerEdge M620 Performance: 17% lower
LU Best Performance Performance: ~8% lower Performance: ~11%
lower
WRF Best Performance Performance: up to ~20%
lower Performance: up to 9%
lower
ANSYS
Fluent Best performance Performance: ~8% lower Performance: ~10%
lower
MILC Best performance Performance: ~39% lower Performance: ~33%
lower
NAMD Best performance (Issues when executing
program) Performance: ~9% lower
* The PowerEdge M620 cluster is used as the baseline for performance comparisons. Higher is better .
Results summary – energy efficiency (EE) Table 5.
Application PowerEdge R820 @ 2.7 GHz
4 servers, 128 cores PowerEdge M420 @ 2.3 GHz
32 servers, 512 cores
HPL EE: 4% higher Best EE: 15% higher
LU Best EE: ~6% higher Similar EE to PowerEdge M620
WRF EE: 12% lower Best EE: ~13% higher
ANSYS Fluent Best EE for truck_poly_14m
(+16%) Best EE for truck_111m
(+23%)
MILC EE: ~18% lower Best EE: ~37% higher
NAMD (Issues when executing program) Better EE: ~5 % higher
* EE is shorthand for energy efficiency. The PowerEdge M620 cluster is used as the baseline for
comparison. Higher is better for EE.
From an engineering and design perspective, performance and energy efficiency considerations are
important to best-fit a cluster to an application’s requirements. However other factors do influence
the final decision. These include total cost of ownership aspects that differ from data center to data
center like the total number of servers, number of switches, power and cooling availability, ease of
administration and cost.