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OSC offers the use of budgets to limit the amount of charges incurred on projects.
Once a budget has been approved, it (and the project it was requested from) becomes active. Having an active project allows users on that project to submit batch jobs to use OSC resources.
PETSc is a suite of data structures and routines for the scalable (parallel) solution of scientific applications modeled by partial differential equations. It supports MPI, and GPUs through CUDA or OpenCL, as well as hybrid MPI-GPU parallelism. The supported libraries include f2cblaslapack, superlu, ptso, metis, parmetis, mumps, hypre and scalapack.
It is useful to take a look at usage over periods of time and calculate overall usage at osc. This page explains how to do this using the HPC Job Activity tool in my.osc.edu
After logging into the client portal, navigate to Individual -> HPC Job Activity.
Enter the appropriate dates:
min date: 01 July 2020
max date: current date (or other end date)
There are different requirements for being able to charge OSC usage towards a grant. This page aims to provide general guidelines, but actual requirements may be different. Contact OSC help if there are specific questions/needs.
Address Sanitizer is a tool developed by Google detect memory access error such as use-after-free and memory leaks. It is built into GCC versions >= 4.8 and can be used on both C and C++ codes. Address Sanitizer uses runtime instrumentation to track memory allocations, which mean you must build your code with Address Sanitizer to take advantage of it's features.
It is possible to utilize Cron and the OSCusage command to send regular usage reports via email
It is easy to create Cron jobs on the Owens and Pitzer clusters at OSC. Cron is a Linux utility which allows the user to schedule a command or script to run automatically at a specific date and time. A cron job is the task that is scheduled.
OSC will be refreshing the software stack for Owens and Pitzer on May 19, 2020. This will be done in a system-wide downtime. During the software refresh, some default versions will be changed to be more up-to-date. Information about the new default versions, as well as all available versions of each software package will be included on the corresponding OSC software webpage.
An ACL (access control list) is a list of permissions associated with a file or directory. These permissions allow you to restrict access to a certain file or directory by user or group.
NetCDF (Network Common Data Form) is an interface for array-oriented data access and a library that provides an implementation of the interface. The netcdf library also defines a machine-independent format for representing scientific data. Together, the interface, library, and format support the creation, access, and sharing of scientific data.
For mpi-dependent codes, use the non-serial NetCDF module.
This document shows you how to use the POSIX ACL permissions system. An ACL (access control list) is a list of permissions associated with a file or directory. These permissions allow you to restrict access to a certian file or directory by user or group.
These commands are useful for project and scratch dirs located in /fs/ess.
Understanding POSIX ACL
An example of a basic POSIX ACL would look like this: