Computer Facilities

Taiwan-ARC currently has seven Linux computing nodes. The file systems and the other machines are located in the B3 server room. ALMA software is available on all machines. See the tables below for the specifications of computers and file systems available to ALMA users. If you need a user account, please send your request to arc@asiaa.sinica.edu.tw.

Two parallel file systems are available for data reduction: the Lustre File System (974 TB) and the BeeGFS File System (3.3 PB). Both are mounted via a 100 Gb/s InfiniBand EDR network, Lustre on all computing nodes and BeeGFS on all nodes except Server 9. The nodes also connect to the ASIAA network through a 10 Gb/s fiber switch. A 272 TB high-speed NVMe scratch area is also available for data reduction and imaging experiments.

ALMA Computers

The current workload and status of all ALMA computers are shown on the Grafana monitoring dashboard (ASIAA internal). To check the current system status of the client servers, log in with the guest account given in the ARC-T user guide (ASIAA internal). Users can also check the resource usage of the client servers on the client server resource usage dashboard (ASIAA internal).

Name System CPU RAM Internal storage
Server 1 AlmaLinux 8.10 2x Intel Xeon E5-2687W v4 @ 3.0 GHz
24-core total		 1560 GB 4.6 TB SSD array
Server 2 AlmaLinux 8.10 2x Intel Xeon E5-2667 v4 @ 3.2 GHz
16-core total		 768 GB 3.6 TB SSD array
Server 3 AlmaLinux 8.10 2x Intel Xeon Gold 6134 @ 3.2 GHz
16-core total		 1024 GB –
Server 4 AlmaLinux 8.10 2x Intel Xeon E5-2643 v2 @ 3.5 GHz
12-core total		 128 GB 220 TB
Server 5 AlmaLinux 8.10 2x Intel Xeon E5-2620 v2 @ 2.1 GHz
12-core total		 128 GB 220 TB
Server 7 AlmaLinux 8.10 2x Intel Xeon E5-2643 v3 @ 3.4 GHz
12-core total		 192 GB 2.2 TB
Server 9 AlmaLinux 8.6 2x Intel Xeon Gold 6348 @ 2.6 GHz
56-core total		 1024 GB 47 TB NVMe SSD array

ALMA File Systems

Current disk usage:

Server racks in the B3 server room
ALMA servers plus the disk arrays and servers for the Parallel File System.
Overview of the Taiwan-ARC computing facility: client servers connect through a 100 Gb/s InfiniBand EDR switch to the Lustre (974 TB), BeeGFS (3.3 PB) and NVMe scratch (272 TB) file systems, and through a 10 Gb/s fiber switch to the ASIAA network
Schematic of the current Taiwan-ARC computing facility. The computing nodes reach the file systems through the 100 Gb/s InfiniBand switch and the ASIAA network through the 10 Gb/s fiber switch. Select the figure to enlarge it.
Name Capacity Type Connection
Lustre File System 974 TB Parallel file system 100 Gb/s InfiniBand
BeeGFS File System 3.3 PB Parallel file system 100 Gb/s InfiniBand
NVMe Scratch Storage 272 TB High-speed scratch space 100 Gb/s InfiniBand

ALMA User Guide

Read the ARC-T user guide (ASIAA internal) for account policies, storage quotas, and instructions on running CASA, CARTA, MIRIAD, Conda, and VNC on these facilities.