Systems News

The HPC Portal is now available on the HPCMP AFRL DSRC Lightning supercomputing systems. For convenience, all users of Lightning have been enabled for access via the HPC Portal at without any additional requirements. The HPC Portal enables supercomputing and visualization capability from a web browser, and requires no user-installed software on the local workstation.

What capabilities does the HPC Portal provide?

The HPC Portal enables access to supercomputing with a web browser. No software installation is required to use the HPC Portal, only a browser with CAC or YubiKey authentication, which enables access from desktops which do not permit user-installed software. The HPC Portal provides a full-featured File Manager, a quick webshell, a complete X-terminal, GNOME Desktop, Carpenter, Ensight, ParaView, Tecplot, FieldView, Pointwise/Gridgen, VisIT, Blacksmith, Ligase, Totalview, ANSYS, Fluent, GAMBIT, Workbench, Abaqus, STAR-CCM+, DDT, CFD++, LS-PrePost, CUBIT, GASP, "Distributed" Matlab, a job status dashboard, and, for approved users, the HPCMP CREATE(TM) analysis codes Kestrel, Helios, SENTRi, Capstone, and DaVinci, as well as the MATLAB IDE, among other applications.

Browse to the site where you'll be able to select a DSRC where you have an allocation (currently AFRL, MHPCC, ERDC, Navy and ARL Classified are available via the HPC Portal). At this site, you will authenticate via the HPCMP OpenID capability using your CAC or Yubikey. No downloaded software or Kerberos kit is required.

How do I get help?

Contact CCAC by email at or by phone at 1-877-222-2039. The HPC Portal also provides a FAQ, tutorials, videos, and a community forum.

Where can I read more about the HPC Portal (including Browser Compatibility)?

The HPC Portal uses HTML5 and WebGL technology, available in the newest generation of browsers, to allow interactive visualization of large science and engineering datasets, Users with older browsers may also use the portal with some limitations on performance. Read more about the development of the HPC Portal at

What if I want to suggest a feature or develop an application for the HPC Portal?

The HPC Portal Team is interested in your thoughts and feedback, including any suggestions for new applications. The HPC Portal team has created a Software Development Kit (SDK) to provide developers the ability to enable applications for use in the HPC Portal. For more information, check the Support Forum at the HPC Portal.

In order to more accurately describe the services provided, the Consolidated Customer Assistance Center (CCAC) will be renamed the "HPC Help Desk." This change will be effective 18 May, 2015. On this date, access to the HPC Help Desk ticket system will change from the current location ( to the new Accordingly, the email address to contact the HPC Help Desk will be The old URL and email address will remain available with auto forwarding and redirection for a period of time, but you are encouraged to update your bookmarks and contacts with these new addresses starting 18 May 2015. The phone number, 1-877-222-2039, will remain the same.

The ARL DSRC Cray XC-40 system debuted at #19 of the world's TOP 500 list of most powerful supercomputers on November 17th, 2014. ARL took delivery of its most recent HPC system, a 101,184 core Cray XC-40. The system was acquired through the DOD High Performance Computing Modernization Program and will complement a stable of other HPC resources at the ARL DOD Supercomputing Resource Center (DSRC). The ARL DSRC Cray XC-40 system will be one of the largest to date in the DOD HPC Program boasting 101,184 cores augmented with 32 NVIDIA Tesla K40 GPGPUs. The system has a theoretical peak of over 3.7 PETA Flops, 400 TBytes of memory, and 122 TBytes of solid-state disk (or 'flash' storage). ARL's Excalibur system will serve as a key HPC resource for the DOD Research, Development and Test and Evaluation communities.

Image of Excalibur

ARL's newest HPC system, Excalibur, has over 101,000 cores and a theoretical peak speed of 3.7 PETAFlops.

As of December 2, 2014, Copper will have a round-robin login configuration, meaning that one will only have to use when logging in. However, this initially will lead to the following when logging in via Linux:

[user@user ~]$ ssh
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
Please contact your system administrator.
Add correct host key in /home/user/.ssh/known_hosts to get rid of this message.
Offending RSA key in /home/user/.ssh/known_hosts:10
RSA host key for copper01 has changed and you have requested strict checking.
Host key verification failed.

This can be eliminated by editing the known_hosts file in the .ssh directory in the home directory on the system from which one is logging in. The entries for Copper in this file should be deleted. For example here are two for copper01 and copper02:,IP_ADDRESS ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDPmFsykLAmJ/uS+RWMN

The lines for both copper01 and copper02 need to be deleted and then the known_host file saved. Then, on the next login to Copper, the following will require an answer:

The authenticity of host 'copper02 (IP_ADDRESS)' can't be established.
RSA key fingerprint is f8:b5:46:2c:6c:f6:5d:98:9e:01:28:19:ca:cd:2e:df.
Are you sure you want to continue connecting (yes/no)?

Answering "yes" will populate the known_hosts file with an updated copper entry and log one into the system.


If logging in from a Windows system, the following message will be displayed:

The server's host key does not match the one PuTTY has cached in the registry. This means that either the server administrator has changed the host key, or you have actually connected to another computer pretending to be the server.
The new rsa2 key fingerprint is: ssh-rsa 1024 cc:83:cc:83:d6:h7:94:3f:19:8b:b0:e3:4c:36:e7:cf
If you were expecting this change and trust the new key, hit Yes to update PuTTY's cache and continue connecting. If you want to carry on connecting but without updating the cache, hit No.
If you want to abandon the connection completely, hit Cancel. Hitting Cancel is the ONLY guaranteed safe choice.

One should simply hit Yes and proceed.