Quartz

*14 nodes: quartz[ 188, 380, 386, 764, 770, 1148, 1154, 1532, 1538, 1916, 1922, 2300, 2306, 2498]

Job Limits

Each LC platform is a shared resource. Users are expected to adhere to the following usage policies to ensure that the resources can be effectively and productively used by everyone. You can view the policies on a system itself by running:

news job.lim.MACHINENAME

Web Version of Quartz Job Limits

There are 2604 compute nodes, with 36 cores and 128 GiB of memory on each node.

Jobs are scheduled per node. Quartz has 2 scheduling pools (or partitions) :

  • pdebug—46
  • pbatch—2558 nodes (92088 cores), batch use only.
Pools               Max nodes/job       Max runtime
---------------------------------------------------
pdebug                    8(*)           60 minutes
pbatch                 1200              24 hours
---------------------------------------------------

(*) Jobs in pdebug are limited to 8 nodes on a PER USER basis, not a PER JOB basis, to allow other users access to this limited resource.  Pdebug is scheduled using fairshare.

Pdebug is intended for debugging, visualization, and other inherently interactive work.  It is NOT intended for production work. Do not use pdebug to run batch jobs.  Do not chain jobs to run one after the other. Individuals who misuse the pdebug queue in this or any similar manner will be denied access to running jobs in the pdebug queue.

Hardware

Each node has 2 18-core Intel Xeon E5-2695 processors (2.1 GHz) and 128 GiB of memory.

  • login: quartz[188,380,386,764,770,1148,1154,1532,1538,1916,1922,2300,2306,2498]
  • pbatch: quartz[47-186,193-378,391-762,775-1146,1159-1530,1543-1914,1927-2298,2311-24
  • 96,2503-2688]
  • pdebug: quartz[1-46]

Quartz uses an Intel Omni-Path Interconnect.

Documentation

Contact

Please call or send email to the LC Hotline if you have questions. LC Hotline | phone: 925-422-4531 | email: lc-hotline@llnl.gov
Zone
CZ
Vendor
Penguin
User-Available Nodes
Login Nodes*
14
Batch Nodes
2,988
Debug Nodes
16
Total Nodes
3,018
CPUs
CPU Architecture
Intel Xeon E5-2695 v4
Cores/Node
36
Total Cores
108,648
Memory Total (GiB)
344,064
CPU Memory/Node (GiB)
128
Clock Speed (GHz)
2.1
Peak single CPU memory bandwidth ((GiB)/s)
77
OS
TOSS 4
Interconnect
Cornelis Networks Omni-Path
Parallel job type
multiple nodes per job
Scheduler
srun
Recommended location for parallel file space
/p/lustre[1,2]
Program
ASC, M&IC
Class
CTS-1
Year Commissioned
2016
Compilers

Compilers
Documentation

Introduction to LC Resources

Linux Clusters Overview