Compute Nodes

Manufacturer: Bull Atos
15 racks, 19 chassis equipped with 171 blades BullX B510 and 14 chassis equipped with 120 blades BullX B520
407.7 Tflop/s peak cluster
332.5 Tflop/s LINPACK
TOP500 List zenobe
Total CPU cores: 13968
Total memory: 39168 GB

Nodes details
Blade types	BullX B520	BullX B510
Node types	Haswell 2 x Intel E5-2680v3	Ivy Bridge 2 x Intel E5-2697v2
# cores per nodes	24	24
# nodes	240	342
Total # of cores	5760	8208
Processor speed	2.5 GHz	2.7 GHz
Instruction Set Extensions	AVX2.0	AVX
Cache	30MB shared by 12 cores	30MB shared by 12 cores
Memory size per node	64 GB (218 fit) 128 GB (18 fat) 256 GB (4 xfat)	64 GB
Memory size per core	2.67 GB (fit) 5.34 GB (fat) 10.68 GB (xfat)	2.67 GB
Memory Type	DDR4 @ 2133 MHz (fit & fat)	DDR3 @ 1866 MHz
Memory bandwith	68.2 GB/s read/write	59.7 GB/s read/write
Ethernet	Gigabit Ethernet	Gigabit Ethernet
Host Channel Adapter	Mellanox Connect-IB single FDR	Mellanox ConnectX3 single FDR
Local disk	1 SSD 128 GB	1 SSD 64 GB