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Ascend

Users who would like to use the Ascend cluster will need to request access.  This is because of the particulars of the Ascend environment, which includes its size, GPUs, and scheduling policies.

Motivation

Access to Ascend is done on a case by case basis because:

Ascend

These are the public key fingerprints for Ascend:
ascend: ssh_host_rsa_key.pub = 2f:ad:ee:99:5a:f4:7f:0d:58:8f:d1:70:9d:e4:f4:16
ascend: ssh_host_ed25519_key.pub = 6b:0e:f1:fb:10:da:8c:0b:36:12:04:57:2b:2c:2b:4d
ascend: ssh_host_ecdsa_key.pub = f4:6f:b5:d2:fa:96:02:73:9a:40:5e:cf:ad:6d:19:e5

Ascend, Owens, Pitzer

The NVIDIA Collective Communication Library (NCCL) implements multi-GPU and multi-node communication primitives optimized for NVIDIA GPUs and Networking. NCCL provides routines such as all-gather, all-reduce, broadcast, reduce, reduce-scatter as well as point-to-point send and receive that are optimized to achieve high bandwidth and low latency over PCIe and NVLink high-speed interconnects within a node and over NVIDIA Mellanox Network across nodes.

Ascend

Compilers

C, C++ and Fortran are supported on the Ascend cluster. Intel, oneAPI, GNU, nvhpc, and aocc compiler suites are available. The Intel development tool chain is loaded by default. Compiler commands and recommended options for serial programs are listed in the table below. See also our compilation guide.

Ascend

This page includes a summary of differences to keep in mind when migrating jobs from other clusters to Ascend. 

Ascend
We use Slurm syntax for all the discussions on this page. Please check how to prepare slurm job script if your script is prepared in PBS syntax. 

Memory limit

Ascend

oneAPI is an open, cross-industry, standards-based, unified, multiarchitecture, multi-vendor programming model that delivers a common developer experience across accelerator architectures – for faster application performance, more productivity, and greater innovation. The oneAPI initiative encourages collaboration on the oneAPI specification and compatible oneAPI implementations across the ecosystem.

GSL

Ascend, Owens, Pitzer

GSL is a library of mathematical methods for C and C++ languages.

Ascend, Owens, Pitzer

Miniconda3 is a free minimal installer for conda. It is a small, bootstrap version of Anaconda that includes only conda, Python, the packages they depend on, and a small number of other useful packages, including pip, zlib and a few others.

Availability and Restrictions

Versions

Miniconda is available on the Ascend Cluster. The versions currently available at OSC are:

Owens, Pitzer

Clara Parabricks is a powerful toolkit designed for genomic analysis. It is primarily designed for GPU computation.

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