Facilities > ALMA/NAASC > Documentation > Manuals > Computing Resources > Available Hardware Resources

Available Hardware Resources

by K Scott Rowe last modified Mar 21, 2016 by David Halstead
Contributors: jrobnett, ebryer, mhatz, pmurphy

The NAASC has a post processing environment comprised of a processing cluster to support CASA execution and a data storage cluster for support of the Lustre filesystem.  Resource allocations of NRAO facilities are limited by available nodes (servers) in the processing cluster and total space within the storage cluster.

Processing Cluster

The NAASC has a 64 node compute cluster.  Each node has dual 2.6GHz 16 core Intel E5-2670 Sandy Bridge processors and 64GB of memory.  The compute nodes have no local disk storage instead they are connected to a distributed parallel filesystem (Lustre) via a 40Gbit Infiniband network.  The compute cluster supports automatic ALMA pipeline processing, archive retrievals, batch processing requests and interactive processing sessions.

Lustre Filesystem

Lustre is a distributed parallel filesystem commonly used in HPC environments.  Each cluster node sees the same shared filesystem.  The NAASC Lustre filesystem is made up of many storage servers each with multiple RAID arrays which vary from 8TB to 16TB in size.  The total storage volume varies in time and as of 2016-02-02 was 436 TB.  Individual nodes can read and write to the Lustre filesystem in excess of 1GByte/sec, the entire filesystem can sustain roughly 10GByte/sec aggregate I/O.

The Lustre filesystem appears as /lustre/naasc on all lustre enabled client computers.

Public Workstations

The NAASC has five workstations for local visitors.  The systems have 8 x Intel E5-1660 Xeon 3.0 GHz processors, 32 GB RAM, 3 TB local disk space (accessible as /home/<hostname>_1 and /home/<hostname>_2) and a 10Gbit connection to the Lustre filesystem.   Instructions for reserving workstations can be found in the BOS system (used to make your visitor reservation at the NAASC).