HPC

Batch Limit Rules RHEL7

Pitzer includes two types of processors, Intel® Xeon® 'Skylake' processor and Intel® Xeon® 'Cascade Lake' processor. This document provides you information on how to request resources based on the requirements of # of cores, memory, etc despite the heterogeneous nature of the Pitzer cluster. Therefore, in some cases, your job can land on either type of processor. Please check guidance on requesting resources on pitzer for your job to obtain a certain type of processor on Pitzer.

Thread Usage Best Practices

This document serves as a knowledge base for properly managing and diagnosing threading issues in user jobs. It focuses on OpenMP, Intel Math Kernel Library (MKL), and common thread-related misuse at OSC.

Understanding Threading with OpenMP and MKL

Intel MKL is widely used in HPC for linear algebra, FFTs, and statistical routines. MKL is multithreaded by default, which can significantly improve performance but only when correctly configured. 

osc-seff

Introduction

osc-seff is a command developed at OSC for use on OSC's systems and provides a the CPU resource data of the seff command with the GPU resource data of gpu-seff.

gpu-seff

Introduction

gpu-seff is a command developed at OSC for use on OSC's systems and is similar providing GPU resource data, similar to the CPU resource data reported by the seff command.

2022 Storage Service Upgrades

In October 2022, OSC retires the Data Direct Networks (DDN) GRIDScaler system deployed in 2016 and expands the IBM Elastic Storage System (ESS) for both Project and global Scratch services. This expands the total capacity of Project and Scratch storage at OSC to ~16 petabytes with better performance.

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