Purdue University

Can you remove me from the Negishi mailing list?

Your subscription in the Negishi mailing list is tied to your account on Negishi. If you are no longer using your account on Negishi, your account can be deleted from the My Accounts page. Hover over the resource you wish to remove yourself from and click the red 'X' button. Your account and mailing list subscription will be removed overnight. Be sure to make a copy of any data you wish to keep first.

How is Negishi different than other Community Clusters?

Negishi differs from the previous Community Clusters in several significant aspects:

• Host naming convention in the Negishi cluster is different from earlier Community Clusters. Everything Negishi-related is contained within a negishi.rcac.purdue.edu subdomain. Front-end login nodes are now named loginNN (as opposed to earlier <cluster>-feNN), and compute nodes of each type X are named xNNN (as opposed to <cluster>-xNNN).
• Negishi OnDemand Gateway is at the gateway.negishi.rcac.purdue.edu (as opposed to earlier gateway.negishi.rcac.purdue.edu convention).
• Negishi home directories are entirely separate from other Community Clusters home directories. There is no automatic copying or synchronization between the two. At their discretion, users can copy parts or all of the Community Clusters home directory into Negishi - instructions are provided.
• Negishi contains the 3rd generation of AMD EPYC processors, codenamed "Milan". These CPUs support AVX2 vector instructions set. When compiling your code, use of -march=znver3 flag (for latest GCC, Clang and AOCC compilers) or -march=core-avx2 (for Intel compilers and GCC prior to 11.0) is recommended.
• GCC compiler with OpenMPI or MVAPICH2 MPI libraries are recommended for software development on Negishi. You can enable this software with module load gcc openmpi (default) or module load gcc mvapich2.
• If you use Jupyter notebooks, JupyterHub on Negishi will be available only via the OnDemand Gateway rather than the freestanding version as on some previous systems. Other RCAC systems will transition to OnDemand as well, following Negishi.

Link to section 'Upcoming 2023' of 'How is Negishi different than other Community Clusters?' Upcoming 2023

• A subset of Negishi compute nodes contain AMD Radeon Instinct MI210 accelerator cards which can significantly improve performance of compute-intensive workloads. These can be utilized by submitting jobs to the gpu queue (add -A gpu to your job submission command).
• A selection of GPU-enabled ROCm application containers from the AMD InfinityHub collection is installed.

Do I need to do anything to my firewall to access Negishi?

No firewall changes are needed to access Negishi. However, to access data through Network Drives (i.e., CIFS, "Z: Drive"), you must be on a Purdue campus network or connected through VPN.

Does Negishi have the same home directory as other clusters?

The Negishi home directory and its contents are exclusive to Negishi cluster front-end hosts and compute nodes. This home directory is not available on other RCAC machines but Negishi. There is no automatic copying or synchronization between home directories.

At your discretion you can manually copy all or parts of your main research computing home to Negishi using one of the suggested methods.

If you plan to use hsi or htar commands to access Fortress tape archive from Negishi, please see also the keytab generation question for a temporary workaround to a potential caveat, while a permanent mitigation is being developed.