CPU modelTotal
Cores		RAM
(GBytes)		FS
Type		 SI2K
CERN		Leak
Ratio
SI2K CERN		 KSI2K
.org		 HEP
SPEC
SLC4		Leak Ratio
HEP SPEC
SLC4		 SI2K6
.org		HEP
SPEC
SL5		Calculated
at
Xeon@2.4 GHz 32 bit HT OFF 2 2 EXT3 ---- ---- 1.60 7.18 ---- ---- ---- INFN-Torino
Xeon@3.06 GHz 32 bit HT ON 2 4 EXT3 ---- ---- 2.30* 12.42*** ---- ---- ---- INFN-T1
Nocona@3.20 GHz HT OFF 2 4 EXT3 1718 0.059 2.13 11.81 0.084 ---- ---- INFN-T1
Xeon@3.20 GHz HT OFF 2 4 EXT3 ---- ---- 2.09 11.62 ---- ---- ---- INFN-Torino
Nocona@3.20 GHz HT ON 2 4 EXT3 1834 -0.068 2.45* 13.99 -0.185 ---- ---- INFN-T1
Nocona@3.40 GHz HT OFF 2 4 EXT3 1976 0.053 2.26 13.17 0.065 ---- ---- INFN-T1
Nocona@3.40 GHz HT ON 2 4 EXT3 2176 -0.101 2.60* 15.76 -0.197 ---- ---- INFN-T1
AMD 252@2.60 GHz 2 4 EXT3 2399 0.003 3.14 16.95 -0.039 ---- 18.34 INFN-T1
AMD 852@2.60 GHz 2 4 EXT3 2392 0.008 3.14 16.93 -0.029 ---- 18.35 INFN-T1
Intel 5130@2.00 GHz 4 4 EXT3 ---- ---- 8.42 29.84 ---- 53 ---- INFN-Torino
Intel 5130@2.00 GHz 4 8 EXT3 4660 0.123 8.42 30.11 0.143 53 32.62 INFN-T1
Intel E5410@2.33 GHz 8 16 EXT3 11164 ---- 18.14** 62.12 ---- 109 ---- INFN-Padova
Intel E5420@2.50 GHz 8 16 EXT3 ---- ---- 19.47** 63.04 ---- 110 ---- INFN-Torino
Intel E5420@2.50 GHz 8 16 EXT3 11080 0.196 19.47** 63.10 0.279 110 68.25 INFN-T1
AMD 2360@2.50 GHz 8 16 EXT3 9939 ---- 19.11** 63.19 ---- 108 ---- INFN-Padova
Intel E5440@2.83 GHz 8 16 EXT3 12183 0.218 23.01** 68.98 0.284 130 74.61 INFN-T1
Intel E5450@3.00 GHz 8 16 EXT3 ---- ---- 24.39** 69.52 ---- 129 ---- INFN-Torino
AMD 2378@2.40 GHz 8 16 EXT3 11209 0.070 23.37**** 70.05 0.058 123 75.29 INFN-T1
AMD 2380@2.50 GHz 8 16 EXT3 11536 0.080 24.15**** 72.13 0.066 126 77.11 INFN-T1
Intel E5520@2.27 GHz HT OFF 8 12 EXT3 12054 0.126 27.03**** 81.02 0.102 --- 96.53 INFN-T1
Intel E5520@2.27 GHz HT ON 8 12 EXT3 14446 ---- 35.22** 101.82 ---- 199 120.49 INFN-T1
Intel E5620@2.4 GHz HT OFF 8 24 EXT3 ---- ---- ---- ---- ---- 223 102.00 INFN-T1
Intel E5620@2.4 GHz HT ON 8 24 EXT3 ---- ---- ---- ---- ---- --- 138.00 INFN-T1
Intel E5645@2.4 GHz HT ON 12 36 EXT3 ---- ---- ---- ---- ---- --- 144.54 INFN-T1



Notes:
SI2K CERN: value obtained using SLC release 4.6 X86_64, gcc version 3.4.6 20060404 (Red Hat 3.4.6-9), Spec2000 Suite V 1.3 and this config file
Leak Ratio SI2K CERN: 1 - (SI2K CERN Calculated / SI2K CERN Theoretical)
SI2K CERN Theoretical: SI2K CERN calculated with single istance multiplied by parallel istances (overbooking: multiplied by total cores)
KSI2K.org: value obtained by spec.org
HEP SPEC: value obtained using SLC release 4.6 X86_64, gcc version 3.4.6 20060404 (Red Hat 3.4.6-9), gcc version 4.1.2 20070626 (Red Hat 4.1.2-14), Spec2006 Suite V 1.1 and this config file
Leak ratio HEP SPEC: 1 - (HEP SPEC Calculated/HEP SPEC Theoretical)
HEP SPEC Theoretical: HEP SPEC calculated with single istance multiplied by parallel istances (overbooking: multiplied by total cores)
SI2K6.org: value obtained by spec.org
*: SPEC.org published only single core's SI2K, with HT ON we assumed an increment of 15% for the whole WN: (KSI2K of single CPU) * (CPUs' number) * 1.15.
**: SPECINT_Rate2006 * 0.177 (SI2K E54XX family has never been published by spec.org). 0.177 was calculated considering Intel 53XX family SI2K.org and SI2k6.org published results.
***: in order to run HEP SPEC, a 64 bit operating system is needed. The following formula was used to get an estimate: HEP SPEC[AMD 252] * KSI2K.org[Xeon 3.06GHz] / KSI2K.org[AMD 252]
****: The following formula was used to get an estimate: KSI2K.org[INTEL E5440] * HEP SPEC[AMD 2380] / HEP SPEC[INTEL E5440]

Useful links:
What is HEP SPEC and how to calculate HEP SPEC: CERN and INFN

F. Rosso
G. Guizzunti