NWZPHI the cluster of the IVV 4

NWZPHI is a cluster equipped with 98 Xeon Phi cards. These are PCIe based accelerators similar to GPUs, but can be used with regular programming languages.

Hard- and Software overview

• 2 developing and debugging servers (24 CPU cores with 2.4 GHz, 64 GB RAM, 1 Xeon Phi 5110p)
• 12 accelerator nodes (24 cores with 2.4 GHz, 128 GB RAM, 8 Xeon Phi 5110p)
• 1 SMP node (32 CPU cores, 1.5 TB RAM)
• 88 TB storage (with FhGFS) for home and scratch
• FDR Infinibad as interconnect
• The operating system is RedHat Enterprise Linux 6

NWZPHI for the impatient reader

The name of the login-server is NWZPHI. Allowed are all users that are members of the group u0clustr and at least one of the groups starting with p0, q0 or r0. In addition, every user allowed for PALMA may use NWZPHI. You can register yourself for u0clstr at MeinZIV (go to Group Management/Gruppenverwaltung).

The batch and module system are working very similar to PALMA.

Differences to PALMA

• In the submit file, you do not need the switch "-A"
• One node has 24 CPU cores
• The node names and properties are different
• The operating system has another version, so you have to recompile your code
• To use the Xeon Phi accelerators, more work is necessary (see below)

Starting jobs on NWZPHI

• Choose your software environment and (optionally) compile your code
• Submit your job via the batch system

Environment Modules

Batch system

Using Xeon Phi Accelerators

Known Issues

For temporary problems please read the login messages.

Other problems are:

• No communication between Xeon Phi accelerators of different nodes is possible at the moment

Support

In case of questions, please ask Holger Angenent or Martin Leweling via hpc@uni-muenster.de.

-- HolgerAngenent - 2014-07-23