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CTE-ARM

System Overview​

CTE-ARM is a supercomputer based on ARM processors by Fujitsu (FX1000). It provides high performance, high scalability, and high reliability, as well as one of the world’s highest levels of ultra-low power consumption. Its theoretical peak performance is 648.8TFLOPS (double precision) and its total amount of memory is 6TiB, distributed among nodes (32GB/node). There are 2 login nodes and 192 computing nodes. The login nodes have the CPU Intel(R) Xeon(R) Silver 4216 CPU @ 2.10GHz and 256 GB of main memory. Bear in mind that login nodes are x86_64 while computing nodes are ARM, therefore cross-compilation is needed. Each computing node has the following configuration:

  • A64FX CPU (Armv8.2-A + SVE) @ 2.20GHz (4 sockets and 12 CPUs/socket, total 48 CPUs per node)
  • 32GB of main memory HBM2
  • Single Port Infiniband EDR
  • TofuD network

It uses ARMv8.2-A Scalable Vector Extension (SVE) SIMD instruction set with 512-bit vector implementation.

Current basic software stack​

The current software stack for computing nodes is:

  • Red Hat Enterprise Linux Server 8.1 (Ootpa)
  • GCC/8.3.1

Connecting to CTE-ARM​

You can connect to CTE-ARM using two public login nodes. Please note that only incoming connections are allowed in the whole cluster. The logins are:

armlogin1.bsc.es
armlogin2.bsc.es

This will provide you with a shell in the login node. There you can compile and prepare your applications.

You must use Secure Shell (ssh) tools to login into or transfer files into the cluster. We do not accept incoming connections from protocols like telnet, ftp, rlogin, rcp, or rsh commands. Once you have logged into the cluster you cannot make outgoing connections for security reasons.