Emmy is the HLRN-IV system procured in 2018 in conjuction with our partners at ZIB. It is the successor of the HLRN-III system formerly hosted in Hannover. With Emmy, the GWDG and the University of Göttingen became one of eight NHR-Centers, thus formally making Emmy an NHR-system. Nonetheless, the HLRN Scientific Board decides on the admission of projects for 50 % of the runtime available on Emmy.
See the Quickstart Guide for all necessary information on how to get access and started on the system. If you are using our systems for your research, please also refer to the guidelines on using our systems for your research.
System Overview 🔗
The nodes of phase 1 are placed in 10 racks in an air-cooled area and the 11 racks of phase 2 are operated with direct hot water cooling.
1.423 Compute Nodes
449 compute nodes belong to phase 1 and are equipped with Intel Xeon Gold 6148 SKL-SP CPUs. The other 974 compute nodes of phase 2 are equipped with Xeon Platinum 9242 CLX-AP CPUs.
111.464 CPU Cores
These are distributed over phase 1 and phase 2 with 17 960 and 93 504 cores respectively.
100 Gbit/s Interconnect
A 100 Gbps Intel Omni-Path network offers low latency and high bandwidth with a fat-tree topology and combines the two phases of Emmy with two 896 port director switches in a single fab
This result was achieved during the LINPACK benchmark, putting Emmy in 47th place on the November 2020 Top 500 list.
478 TB RAM
Across all 1 423 nodes are 478 TB of memory available.
8,4 PiB Storage
A total of 8.4 PiB of storage capacity is available on global parallel file systems, divided into 340TiB for the GPFS-based Home and 8.1 PiB for the Lustre-based Work file system.
6,4 PiB Tape Storage
To archive their results, users have a total of 6.4 PiB of tape storage with a 120 TiB hard disk cache at their disposal.
Node Architectures 🔗
|Name||Number of nodes||CPU & GPU||Number of CPU-Cores||Memory [GB]||Partition|
|gcn1||432||2 x Xeon Gold 6148||20||187||[medium40:test]|
|gfn1||16||2 x Xeon Gold 6148||20||754||[large40]|
|ggpu01||1||2 x Xeon Gold 6148||20||754||[gpu]|
|ggpu0x||2||2 x Xeon Gold 6248||20||754||[gpu]|
|gcn2||1004||2 x Xeon Platinum 9242||48||376||[standard96:test]|
|gfn2||16||2 x Xeon Platinum 9242||48||754||[large96]|
|gsn2||2||2 x Xeon Platinum 9242||48||1510||[huge96]|