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OPEN SCIENCE GRID
The OSG facilitates access to distributed high throughput computing for research in the US. The resources accessible through the OSG are contributed by the community, organized by the OSG, and governed by the OSG consortium. In the last 12 months, we have provided more than 1.2 billion CPU hours to researchers across a wide variety ofprojects.
REGISTRATION
Registering in the OSG¶. The OSG keeps a registry containing active projects, virtual organizations (VOs), resources, and resource downtimes stored as YAML files in the topology GitHub repository.This registry is used for accounting data, contact information, and resource availability, particularly if your site is part of the World LHC Computing Grid (WLCG). CONFIGURATION WITH OSG-CONFIGURE INSTALL XROOTD STANDALONE XRootD is a hierarchical storage system that can be used in a variety of ways to access data, typically distributed among actual storage resources. In this document we focus on using XRootD as a simple layer exporting an underlying storage system (e.g., HDFS) to the outside world. Before Starting¶. Before starting the installation process, consider the following points: HTCONDOR-CE OVERVIEW The Hosted CE is intended for small sites or as an introduction to the OSG. The OSG configures and maintains an HTCondor-CE on behalf of the site. The Hosted CE is a special configuration of HTCondor-CE that can submit jobs to a remote cluster over SSH. It provides a simple starting point for opportunistic resource owners that want to startXROOTD OVERVIEW
XRootD Overview¶. XRootD is a highly-configurable data server used by sites in the OSG to support VO-specific storage needs. The software can be used to create an export of an existing file system through multiple protocols, participate in a data federation, or act as acaching service.
USING XROOTD
XRootD is a high performance data system widely used by several science VOs on OSG to store and to distribute data to jobs. It can be used to create a data store from distributed data nodes or to serve data to systems using a distributed caching architecture. INSTALL GRIDFTP SERVER The collector is the central server which logs the GridFTP transfers into a database. There are usually two options: OSG Transfer Collector: This is the primary collector for transfers in the OSG. Use CollectorHost="gratia-osg-prod.opensciencegrid.org:80". OSG-ITB Transfer Collector: This is the test collector for transfers in theOSG.
CONFIGURE AUTHORIZATION Note. On the data nodes, the files will actually be owned by Unix user xrootd (or other daemon user), not as the user authenticated to, under most circumstances. XRootD will verify the permissions and authorization based on the user that the security plugin authenticates you to, but, internally, the data node files will be owned by the xrootd user. If this behaviour is not desired, enableINSTALL HTCONDOR-CE
Installing and Maintaining HTCondor-CE¶. The HTCondor-CE software is a job gateway for an OSG Compute Entrypoint (CE). As such, the OSG will submit resource allocation requests (RARs) jobs to your HTCondor-CE and it will handle authorization and delegation of RARs to your local batch system.OPEN SCIENCE GRID
The OSG facilitates access to distributed high throughput computing for research in the US. The resources accessible through the OSG are contributed by the community, organized by the OSG, and governed by the OSG consortium. In the last 12 months, we have provided more than 1.2 billion CPU hours to researchers across a wide variety ofprojects.
REGISTRATION
Registering in the OSG¶. The OSG keeps a registry containing active projects, virtual organizations (VOs), resources, and resource downtimes stored as YAML files in the topology GitHub repository.This registry is used for accounting data, contact information, and resource availability, particularly if your site is part of the World LHC Computing Grid (WLCG). CONFIGURATION WITH OSG-CONFIGURE INSTALL XROOTD STANDALONE XRootD is a hierarchical storage system that can be used in a variety of ways to access data, typically distributed among actual storage resources. In this document we focus on using XRootD as a simple layer exporting an underlying storage system (e.g., HDFS) to the outside world. Before Starting¶. Before starting the installation process, consider the following points: HTCONDOR-CE OVERVIEW The Hosted CE is intended for small sites or as an introduction to the OSG. The OSG configures and maintains an HTCondor-CE on behalf of the site. The Hosted CE is a special configuration of HTCondor-CE that can submit jobs to a remote cluster over SSH. It provides a simple starting point for opportunistic resource owners that want to startXROOTD OVERVIEW
XRootD Overview¶. XRootD is a highly-configurable data server used by sites in the OSG to support VO-specific storage needs. The software can be used to create an export of an existing file system through multiple protocols, participate in a data federation, or act as acaching service.
USING XROOTD
XRootD is a high performance data system widely used by several science VOs on OSG to store and to distribute data to jobs. It can be used to create a data store from distributed data nodes or to serve data to systems using a distributed caching architecture. INSTALL GRIDFTP SERVER The collector is the central server which logs the GridFTP transfers into a database. There are usually two options: OSG Transfer Collector: This is the primary collector for transfers in the OSG. Use CollectorHost="gratia-osg-prod.opensciencegrid.org:80". OSG-ITB Transfer Collector: This is the test collector for transfers in theOSG.
CONFIGURE AUTHORIZATION Note. On the data nodes, the files will actually be owned by Unix user xrootd (or other daemon user), not as the user authenticated to, under most circumstances. XRootD will verify the permissions and authorization based on the user that the security plugin authenticates you to, but, internally, the data node files will be owned by the xrootd user. If this behaviour is not desired, enableINSTALL HTCONDOR-CE
Installing and Maintaining HTCondor-CE¶. The HTCondor-CE software is a job gateway for an OSG Compute Entrypoint (CE). As such, the OSG will submit resource allocation requests (RARs) jobs to your HTCondor-CE and it will handle authorization and delegation of RARs to your local batch system. OSG VIRTUAL SCHOOL 2021 OSG Virtual School 2021¶. Transform your research with vast amounts of computing! The OSG Virtual School 2021 will prepare you to use high throughput computing (HTC) — whether on a local system or using OSG — to run large-scale research simulation, analysis, and other applications for cutting-edge science. Through lecture, demonstration, hands-on exercises, and a personalized learningCA CERTIFICATES
Option 1: Install an RPM for a specific set of CA certificates¶. Note. This option is the default if you install OSG software without pre-installing CAs. For example, yum install osg-ce will bring in osg-ca-certs by default. In the OSG repositories, you will find two different sets of predefined CA certificates:REGISTRATION
Registering in the OSG¶. The OSG keeps a registry containing active projects, virtual organizations (VOs), resources, and resource downtimes stored as YAML files in the topology GitHub repository.This registry is used for accounting data, contact information, and resource availability, particularly if your site is part of the World LHC Computing Grid (WLCG).PUBLICATIONS
Funded by the National Science Foundation under Grant Nos. 2030508, 1836650, and 1148698. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National ScienceFoundation.
OSG YUM REPOS
Add the following to a file in /etc/cron.d: Replace with the OSG release you would like to use (e.g. 3.5) and with a number between 0 and 59. On your worker node, you can replace the baseurl line of /etc/yum.repos.d/osg.repo with the appropriate URL for your mirror.XROOTD OVERVIEW
XRootD Overview¶. XRootD is a highly-configurable data server used by sites in the OSG to support VO-specific storage needs. The software can be used to create an export of an existing file system through multiple protocols, participate in a data federation, or act as acaching service.
INSTALL CVMFS
The CernVM File System is an HTTP-based file distribution service used to provide data and software for jobs.By installing CVMFS, you have access to an alternative installation method for required worker node software and your site you will be able to support a wider range ofuser jobs.
USING XROOTD
XRootD is a high performance data system widely used by several science VOs on OSG to store and to distribute data to jobs. It can be used to create a data store from distributed data nodes or to serve data to systems using a distributed caching architecture. MIGRATING DOCUMENTS TO MARKDOWN Migrating to Markdown¶. As part of the TWiki retirement (the read-only target date of Oct 1, 2017, with a shutdown date in 2018), we will need to convert the OSG Software and Release3 docs from TWiki syntax to Markdown.The following document outlines the conversion process and conventions. OPEN SCIENCE GRID STATUS Resolved - The data center issue has been resolved and OSG Connect services are now back to a fully functional state. If you are still experiencing any problems, please contact us at support@opensciencegrid.org. May 22, 16:17 UTC. Monitoring - Due to issues within the data center, multiple OSG Connect services are either fully offline orOPEN SCIENCE GRID
The OSG facilitates access to distributed high throughput computing for research in the US. The resources accessible through the OSG are contributed by the community, organized by the OSG, and governed by the OSG consortium. In the last 12 months, we have provided more than 1.2 billion CPU hours to researchers across a wide variety ofprojects.
REGISTRATION
Registering in the OSG¶. The OSG keeps a registry containing active projects, virtual organizations (VOs), resources, and resource downtimes stored as YAML files in the topology GitHub repository.This registry is used for accounting data, contact information, and resource availability, particularly if your site is part of the World LHC Computing Grid (WLCG). CONFIGURATION WITH OSG-CONFIGURE INSTALL XROOTD STANDALONE XRootD is a hierarchical storage system that can be used in a variety of ways to access data, typically distributed among actual storage resources. In this document we focus on using XRootD as a simple layer exporting an underlying storage system (e.g., HDFS) to the outside world. Before Starting¶. Before starting the installation process, consider the following points: HTCONDOR-CE OVERVIEW The Hosted CE is intended for small sites or as an introduction to the OSG. The OSG configures and maintains an HTCondor-CE on behalf of the site. The Hosted CE is a special configuration of HTCondor-CE that can submit jobs to a remote cluster over SSH. It provides a simple starting point for opportunistic resource owners that want to startXROOTD OVERVIEW
XRootD Overview¶. XRootD is a highly-configurable data server used by sites in the OSG to support VO-specific storage needs. The software can be used to create an export of an existing file system through multiple protocols, participate in a data federation, or act as acaching service.
USING XROOTD
XRootD is a high performance data system widely used by several science VOs on OSG to store and to distribute data to jobs. It can be used to create a data store from distributed data nodes or to serve data to systems using a distributed caching architecture. INSTALL GRIDFTP SERVER The collector is the central server which logs the GridFTP transfers into a database. There are usually two options: OSG Transfer Collector: This is the primary collector for transfers in the OSG. Use CollectorHost="gratia-osg-prod.opensciencegrid.org:80". OSG-ITB Transfer Collector: This is the test collector for transfers in theOSG.
CONFIGURE AUTHORIZATION Note. On the data nodes, the files will actually be owned by Unix user xrootd (or other daemon user), not as the user authenticated to, under most circumstances. XRootD will verify the permissions and authorization based on the user that the security plugin authenticates you to, but, internally, the data node files will be owned by the xrootd user. If this behaviour is not desired, enableINSTALL HTCONDOR-CE
Installing and Maintaining HTCondor-CE¶. The HTCondor-CE software is a job gateway for an OSG Compute Entrypoint (CE). As such, the OSG will submit resource allocation requests (RARs) jobs to your HTCondor-CE and it will handle authorization and delegation of RARs to your local batch system.OPEN SCIENCE GRID
The OSG facilitates access to distributed high throughput computing for research in the US. The resources accessible through the OSG are contributed by the community, organized by the OSG, and governed by the OSG consortium. In the last 12 months, we have provided more than 1.2 billion CPU hours to researchers across a wide variety ofprojects.
REGISTRATION
Registering in the OSG¶. The OSG keeps a registry containing active projects, virtual organizations (VOs), resources, and resource downtimes stored as YAML files in the topology GitHub repository.This registry is used for accounting data, contact information, and resource availability, particularly if your site is part of the World LHC Computing Grid (WLCG). CONFIGURATION WITH OSG-CONFIGURE INSTALL XROOTD STANDALONE XRootD is a hierarchical storage system that can be used in a variety of ways to access data, typically distributed among actual storage resources. In this document we focus on using XRootD as a simple layer exporting an underlying storage system (e.g., HDFS) to the outside world. Before Starting¶. Before starting the installation process, consider the following points: HTCONDOR-CE OVERVIEW The Hosted CE is intended for small sites or as an introduction to the OSG. The OSG configures and maintains an HTCondor-CE on behalf of the site. The Hosted CE is a special configuration of HTCondor-CE that can submit jobs to a remote cluster over SSH. It provides a simple starting point for opportunistic resource owners that want to startXROOTD OVERVIEW
XRootD Overview¶. XRootD is a highly-configurable data server used by sites in the OSG to support VO-specific storage needs. The software can be used to create an export of an existing file system through multiple protocols, participate in a data federation, or act as acaching service.
USING XROOTD
XRootD is a high performance data system widely used by several science VOs on OSG to store and to distribute data to jobs. It can be used to create a data store from distributed data nodes or to serve data to systems using a distributed caching architecture. INSTALL GRIDFTP SERVER The collector is the central server which logs the GridFTP transfers into a database. There are usually two options: OSG Transfer Collector: This is the primary collector for transfers in the OSG. Use CollectorHost="gratia-osg-prod.opensciencegrid.org:80". OSG-ITB Transfer Collector: This is the test collector for transfers in theOSG.
CONFIGURE AUTHORIZATION Note. On the data nodes, the files will actually be owned by Unix user xrootd (or other daemon user), not as the user authenticated to, under most circumstances. XRootD will verify the permissions and authorization based on the user that the security plugin authenticates you to, but, internally, the data node files will be owned by the xrootd user. If this behaviour is not desired, enableINSTALL HTCONDOR-CE
Installing and Maintaining HTCondor-CE¶. The HTCondor-CE software is a job gateway for an OSG Compute Entrypoint (CE). As such, the OSG will submit resource allocation requests (RARs) jobs to your HTCondor-CE and it will handle authorization and delegation of RARs to your local batch system. OSG VIRTUAL SCHOOL 2021 OSG Virtual School 2021¶. Transform your research with vast amounts of computing! The OSG Virtual School 2021 will prepare you to use high throughput computing (HTC) — whether on a local system or using OSG — to run large-scale research simulation, analysis, and other applications for cutting-edge science. Through lecture, demonstration, hands-on exercises, and a personalized learningCA CERTIFICATES
Option 1: Install an RPM for a specific set of CA certificates¶. Note. This option is the default if you install OSG software without pre-installing CAs. For example, yum install osg-ce will bring in osg-ca-certs by default. In the OSG repositories, you will find two different sets of predefined CA certificates:REGISTRATION
Registering in the OSG¶. The OSG keeps a registry containing active projects, virtual organizations (VOs), resources, and resource downtimes stored as YAML files in the topology GitHub repository.This registry is used for accounting data, contact information, and resource availability, particularly if your site is part of the World LHC Computing Grid (WLCG).PUBLICATIONS
Funded by the National Science Foundation under Grant Nos. 2030508, 1836650, and 1148698. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National ScienceFoundation.
OSG YUM REPOS
Add the following to a file in /etc/cron.d: Replace with the OSG release you would like to use (e.g. 3.5) and with a number between 0 and 59. On your worker node, you can replace the baseurl line of /etc/yum.repos.d/osg.repo with the appropriate URL for your mirror.XROOTD OVERVIEW
XRootD Overview¶. XRootD is a highly-configurable data server used by sites in the OSG to support VO-specific storage needs. The software can be used to create an export of an existing file system through multiple protocols, participate in a data federation, or act as acaching service.
INSTALL CVMFS
The CernVM File System is an HTTP-based file distribution service used to provide data and software for jobs.By installing CVMFS, you have access to an alternative installation method for required worker node software and your site you will be able to support a wider range ofuser jobs.
USING XROOTD
XRootD is a high performance data system widely used by several science VOs on OSG to store and to distribute data to jobs. It can be used to create a data store from distributed data nodes or to serve data to systems using a distributed caching architecture. MIGRATING DOCUMENTS TO MARKDOWN Migrating to Markdown¶. As part of the TWiki retirement (the read-only target date of Oct 1, 2017, with a shutdown date in 2018), we will need to convert the OSG Software and Release3 docs from TWiki syntax to Markdown.The following document outlines the conversion process and conventions. OPEN SCIENCE GRID STATUS Resolved - The data center issue has been resolved and OSG Connect services are now back to a fully functional state. If you are still experiencing any problems, please contact us at support@opensciencegrid.org. May 22, 16:17 UTC. Monitoring - Due to issues within the data center, multiple OSG Connect services are either fully offline orOPEN SCIENCE GRID
The OSG facilitates access to distributed high throughput computing for research in the US. The resources accessible through the OSG are contributed by the community, organized by the OSG, and governed by the OSG consortium. In the last 12 months, we have provided more than 1.2 billion CPU hours to researchers across a wide variety ofprojects.
OSG VIRTUAL SCHOOL 2021 OSG Virtual School 2021¶. Transform your research with vast amounts of computing! The OSG Virtual School 2021 will prepare you to use high throughput computing (HTC) — whether on a local system or using OSG — to run large-scale research simulation, analysis, and other applications for cutting-edge science. Through lecture, demonstration, hands-on exercises, and a personalized learningUPDATING TO OSG 3.6
Updating to OSG 3.6¶. OSG 3.6 (the new series) is a major overhaul of the OSG software stack compared to OSG 3.5 (the old series) with changes to core protocols used for authentication and data transfer.Depending on the VO(s) that you support, updating to the new series could result in issues with your site receiving pilot jobs and/or issues with data transfer. CONFIGURATION WITH OSG-CONFIGUREREGISTRATION
Registering in the OSG¶. The OSG keeps a registry containing active projects, virtual organizations (VOs), resources, and resource downtimes stored as YAML files in the topology GitHub repository.This registry is used for accounting data, contact information, and resource availability, particularly if your site is part of the World LHC Computing Grid (WLCG).OSG YUM REPOS
Add the following to a file in /etc/cron.d: Replace with the OSG release you would like to use (e.g. 3.5) and with a number between 0 and 59. On your worker node, you can replace the baseurl line of /etc/yum.repos.d/osg.repo with the appropriate URL for your mirror. HTCONDOR-CE OVERVIEW The Hosted CE is intended for small sites or as an introduction to the OSG. The OSG configures and maintains an HTCondor-CE on behalf of the site. The Hosted CE is a special configuration of HTCondor-CE that can submit jobs to a remote cluster over SSH. It provides a simple starting point for opportunistic resource owners that want to start INSTALL XROOTD STANDALONE XRootD is a hierarchical storage system that can be used in a variety of ways to access data, typically distributed among actual storage resources. In this document we focus on using XRootD as a simple layer exporting an underlying storage system (e.g., HDFS) to the outside world. Before Starting¶. Before starting the installation process, consider the following points:INSTALL CVMFS
The CernVM File System is an HTTP-based file distribution service used to provide data and software for jobs.By installing CVMFS, you have access to an alternative installation method for required worker node software and your site you will be able to support a wider range ofuser jobs.
RUNNING A CACHE IN A CONTAINER Running StashCache Cache in a Container¶. The OSG operates the StashCache data federation, which provides organizations with a method to distribute their data in a scalable manner to thousands of jobs without needing to pre-stage data across sites or operate their own scalable infrastructure.. Stash Caches transfer data to clients suchas jobs or users.
OPEN SCIENCE GRID
The OSG facilitates access to distributed high throughput computing for research in the US. The resources accessible through the OSG are contributed by the community, organized by the OSG, and governed by the OSG consortium. In the last 12 months, we have provided more than 1.2 billion CPU hours to researchers across a wide variety ofprojects.
OSG VIRTUAL SCHOOL 2021 OSG Virtual School 2021¶. Transform your research with vast amounts of computing! The OSG Virtual School 2021 will prepare you to use high throughput computing (HTC) — whether on a local system or using OSG — to run large-scale research simulation, analysis, and other applications for cutting-edge science. Through lecture, demonstration, hands-on exercises, and a personalized learningUPDATING TO OSG 3.6
Updating to OSG 3.6¶. OSG 3.6 (the new series) is a major overhaul of the OSG software stack compared to OSG 3.5 (the old series) with changes to core protocols used for authentication and data transfer.Depending on the VO(s) that you support, updating to the new series could result in issues with your site receiving pilot jobs and/or issues with data transfer. CONFIGURATION WITH OSG-CONFIGUREREGISTRATION
Registering in the OSG¶. The OSG keeps a registry containing active projects, virtual organizations (VOs), resources, and resource downtimes stored as YAML files in the topology GitHub repository.This registry is used for accounting data, contact information, and resource availability, particularly if your site is part of the World LHC Computing Grid (WLCG).OSG YUM REPOS
Add the following to a file in /etc/cron.d: Replace with the OSG release you would like to use (e.g. 3.5) and with a number between 0 and 59. On your worker node, you can replace the baseurl line of /etc/yum.repos.d/osg.repo with the appropriate URL for your mirror. HTCONDOR-CE OVERVIEW The Hosted CE is intended for small sites or as an introduction to the OSG. The OSG configures and maintains an HTCondor-CE on behalf of the site. The Hosted CE is a special configuration of HTCondor-CE that can submit jobs to a remote cluster over SSH. It provides a simple starting point for opportunistic resource owners that want to start INSTALL XROOTD STANDALONE XRootD is a hierarchical storage system that can be used in a variety of ways to access data, typically distributed among actual storage resources. In this document we focus on using XRootD as a simple layer exporting an underlying storage system (e.g., HDFS) to the outside world. Before Starting¶. Before starting the installation process, consider the following points:INSTALL CVMFS
The CernVM File System is an HTTP-based file distribution service used to provide data and software for jobs.By installing CVMFS, you have access to an alternative installation method for required worker node software and your site you will be able to support a wider range ofuser jobs.
RUNNING A CACHE IN A CONTAINER Running StashCache Cache in a Container¶. The OSG operates the StashCache data federation, which provides organizations with a method to distribute their data in a scalable manner to thousands of jobs without needing to pre-stage data across sites or operate their own scalable infrastructure.. Stash Caches transfer data to clients suchas jobs or users.
SITE PLANNING
Site Planning¶. The OSG vision is to integrate computing across different resource types and business models to allow campus IT to offer a maximally flexible high throughput computing (HTC) environment for their researchers.. This document is for System Administrators and aims to provide an overview of the different options to consider when planning to share resources via the OSG. OSG VIRTUAL SCHOOL 2021 OSG Virtual School 2021¶. Transform your research with vast amounts of computing! The OSG Virtual School 2021 will prepare you to use high throughput computing (HTC) — whether on a local system or using OSG — to run large-scale research simulation, analysis, and other applications for cutting-edge science. Through lecture, demonstration, hands-on exercises, and a personalized learningOSG YUM REPOS
Add the following to a file in /etc/cron.d: Replace with the OSG release you would like to use (e.g. 3.5) and with a number between 0 and 59. On your worker node, you can replace the baseurl line of /etc/yum.repos.d/osg.repo with the appropriate URL for your mirror.RELEASE SERIES
Release Series¶. Release Series. An OSG release series is a sequence of OSG software releases that are intended to provide a painless upgrade path. For example, the 3.2 release series contains OSG software 3.2.0, 3.2.1, 3.2.2, and so forth. A release series corresponds to a set of Yum software repositories, including ones fordevelopment
INSTALL XROOTD STANDALONE XRootD is a hierarchical storage system that can be used in a variety of ways to access data, typically distributed among actual storage resources. In this document we focus on using XRootD as a simple layer exporting an underlying storage system (e.g., HDFS) to the outside world. Before Starting¶. Before starting the installation process, consider the following points:USING XROOTD
XRootD is a high performance data system widely used by several science VOs on OSG to store and to distribute data to jobs. It can be used to create a data store from distributed data nodes or to serve data to systems using a distributed caching architecture. HOW TO REQUEST TOKENS How to Request Tokens¶. As part of the GridFTP and GSI migration, the OSG will be transitioning authentication away from X.509 certificates to the use of bearer tokens such as SciTokens or WLCG JWT.This document is intended as a guide for OSG developers for requesting tokens necessary for software development.INSTALL HTCONDOR-CE
Installing and Maintaining HTCondor-CE¶. The HTCondor-CE software is a job gateway for an OSG Compute Entrypoint (CE). As such, the OSG will submit resource allocation requests (RARs) jobs to your HTCondor-CE and it will handle authorization and delegation of RARs to your local batch system. OPEN SCIENCE GRID STATUS Resolved - The data center issue has been resolved and OSG Connect services are now back to a fully functional state. If you are still experiencing any problems, please contact us at support@opensciencegrid.org. May 22, 16:17 UTC. Monitoring - Due to issues within the data center, multiple OSG Connect services are either fully offline or TROUBLESHOOT HTCONDOR CE This material is based upon work supported by the National Science Foundation under Grant Nos. 1148698, 1836650, and 2030508.Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views ofOPEN SCIENCE GRID
The OSG facilitates access to distributed high throughput computing for research in the US. The resources accessible through the OSG are contributed by the community, organized by the OSG, and governed by the OSG consortium. In the last 12 months, we have provided more than 1.2 billion CPU hours to researchers across a wide variety ofprojects.
OSG VIRTUAL SCHOOL 2021 OSG Virtual School 2021¶. Transform your research with vast amounts of computing! The OSG Virtual School 2021 will prepare you to use high throughput computing (HTC) — whether on a local system or using OSG — to run large-scale research simulation, analysis, and other applications for cutting-edge science. Through lecture, demonstration, hands-on exercises, and a personalized learningUPDATING TO OSG 3.6
Updating to OSG 3.6¶. OSG 3.6 (the new series) is a major overhaul of the OSG software stack compared to OSG 3.5 (the old series) with changes to core protocols used for authentication and data transfer.Depending on the VO(s) that you support, updating to the new series could result in issues with your site receiving pilot jobs and/or issues with data transfer. CONFIGURATION WITH OSG-CONFIGUREREGISTRATION
Registering in the OSG¶. The OSG keeps a registry containing active projects, virtual organizations (VOs), resources, and resource downtimes stored as YAML files in the topology GitHub repository.This registry is used for accounting data, contact information, and resource availability, particularly if your site is part of the World LHC Computing Grid (WLCG).OSG YUM REPOS
Add the following to a file in /etc/cron.d: Replace with the OSG release you would like to use (e.g. 3.5) and with a number between 0 and 59. On your worker node, you can replace the baseurl line of /etc/yum.repos.d/osg.repo with the appropriate URL for your mirror. HTCONDOR-CE OVERVIEW The Hosted CE is intended for small sites or as an introduction to the OSG. The OSG configures and maintains an HTCondor-CE on behalf of the site. The Hosted CE is a special configuration of HTCondor-CE that can submit jobs to a remote cluster over SSH. It provides a simple starting point for opportunistic resource owners that want to start INSTALL XROOTD STANDALONE XRootD is a hierarchical storage system that can be used in a variety of ways to access data, typically distributed among actual storage resources. In this document we focus on using XRootD as a simple layer exporting an underlying storage system (e.g., HDFS) to the outside world. Before Starting¶. Before starting the installation process, consider the following points:INSTALL CVMFS
The CernVM File System is an HTTP-based file distribution service used to provide data and software for jobs.By installing CVMFS, you have access to an alternative installation method for required worker node software and your site you will be able to support a wider range ofuser jobs.
RUNNING A CACHE IN A CONTAINER Running StashCache Cache in a Container¶. The OSG operates the StashCache data federation, which provides organizations with a method to distribute their data in a scalable manner to thousands of jobs without needing to pre-stage data across sites or operate their own scalable infrastructure.. Stash Caches transfer data to clients suchas jobs or users.
OPEN SCIENCE GRID
The OSG facilitates access to distributed high throughput computing for research in the US. The resources accessible through the OSG are contributed by the community, organized by the OSG, and governed by the OSG consortium. In the last 12 months, we have provided more than 1.2 billion CPU hours to researchers across a wide variety ofprojects.
OSG VIRTUAL SCHOOL 2021 OSG Virtual School 2021¶. Transform your research with vast amounts of computing! The OSG Virtual School 2021 will prepare you to use high throughput computing (HTC) — whether on a local system or using OSG — to run large-scale research simulation, analysis, and other applications for cutting-edge science. Through lecture, demonstration, hands-on exercises, and a personalized learningUPDATING TO OSG 3.6
Updating to OSG 3.6¶. OSG 3.6 (the new series) is a major overhaul of the OSG software stack compared to OSG 3.5 (the old series) with changes to core protocols used for authentication and data transfer.Depending on the VO(s) that you support, updating to the new series could result in issues with your site receiving pilot jobs and/or issues with data transfer. CONFIGURATION WITH OSG-CONFIGUREREGISTRATION
Registering in the OSG¶. The OSG keeps a registry containing active projects, virtual organizations (VOs), resources, and resource downtimes stored as YAML files in the topology GitHub repository.This registry is used for accounting data, contact information, and resource availability, particularly if your site is part of the World LHC Computing Grid (WLCG).OSG YUM REPOS
Add the following to a file in /etc/cron.d: Replace with the OSG release you would like to use (e.g. 3.5) and with a number between 0 and 59. On your worker node, you can replace the baseurl line of /etc/yum.repos.d/osg.repo with the appropriate URL for your mirror. HTCONDOR-CE OVERVIEW The Hosted CE is intended for small sites or as an introduction to the OSG. The OSG configures and maintains an HTCondor-CE on behalf of the site. The Hosted CE is a special configuration of HTCondor-CE that can submit jobs to a remote cluster over SSH. It provides a simple starting point for opportunistic resource owners that want to start INSTALL XROOTD STANDALONE XRootD is a hierarchical storage system that can be used in a variety of ways to access data, typically distributed among actual storage resources. In this document we focus on using XRootD as a simple layer exporting an underlying storage system (e.g., HDFS) to the outside world. Before Starting¶. Before starting the installation process, consider the following points:INSTALL CVMFS
The CernVM File System is an HTTP-based file distribution service used to provide data and software for jobs.By installing CVMFS, you have access to an alternative installation method for required worker node software and your site you will be able to support a wider range ofuser jobs.
RUNNING A CACHE IN A CONTAINER Running StashCache Cache in a Container¶. The OSG operates the StashCache data federation, which provides organizations with a method to distribute their data in a scalable manner to thousands of jobs without needing to pre-stage data across sites or operate their own scalable infrastructure.. Stash Caches transfer data to clients suchas jobs or users.
SITE PLANNING
Site Planning¶. The OSG vision is to integrate computing across different resource types and business models to allow campus IT to offer a maximally flexible high throughput computing (HTC) environment for their researchers.. This document is for System Administrators and aims to provide an overview of the different options to consider when planning to share resources via the OSG. OSG VIRTUAL SCHOOL 2021 OSG Virtual School 2021¶. Transform your research with vast amounts of computing! The OSG Virtual School 2021 will prepare you to use high throughput computing (HTC) — whether on a local system or using OSG — to run large-scale research simulation, analysis, and other applications for cutting-edge science. Through lecture, demonstration, hands-on exercises, and a personalized learningOSG YUM REPOS
Add the following to a file in /etc/cron.d: Replace with the OSG release you would like to use (e.g. 3.5) and with a number between 0 and 59. On your worker node, you can replace the baseurl line of /etc/yum.repos.d/osg.repo with the appropriate URL for your mirror.RELEASE SERIES
Release Series¶. Release Series. An OSG release series is a sequence of OSG software releases that are intended to provide a painless upgrade path. For example, the 3.2 release series contains OSG software 3.2.0, 3.2.1, 3.2.2, and so forth. A release series corresponds to a set of Yum software repositories, including ones fordevelopment
INSTALL XROOTD STANDALONE XRootD is a hierarchical storage system that can be used in a variety of ways to access data, typically distributed among actual storage resources. In this document we focus on using XRootD as a simple layer exporting an underlying storage system (e.g., HDFS) to the outside world. Before Starting¶. Before starting the installation process, consider the following points:USING XROOTD
XRootD is a high performance data system widely used by several science VOs on OSG to store and to distribute data to jobs. It can be used to create a data store from distributed data nodes or to serve data to systems using a distributed caching architecture. HOW TO REQUEST TOKENS How to Request Tokens¶. As part of the GridFTP and GSI migration, the OSG will be transitioning authentication away from X.509 certificates to the use of bearer tokens such as SciTokens or WLCG JWT.This document is intended as a guide for OSG developers for requesting tokens necessary for software development.INSTALL HTCONDOR-CE
Installing and Maintaining HTCondor-CE¶. The HTCondor-CE software is a job gateway for an OSG Compute Entrypoint (CE). As such, the OSG will submit resource allocation requests (RARs) jobs to your HTCondor-CE and it will handle authorization and delegation of RARs to your local batch system. OPEN SCIENCE GRID STATUS Resolved - The data center issue has been resolved and OSG Connect services are now back to a fully functional state. If you are still experiencing any problems, please contact us at support@opensciencegrid.org. May 22, 16:17 UTC. Monitoring - Due to issues within the data center, multiple OSG Connect services are either fully offline or TROUBLESHOOT HTCONDOR CE This material is based upon work supported by the National Science Foundation under Grant Nos. 1148698, 1836650, and 2030508.Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views ofOpen Science Grid
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THE OPEN SCIENCE GRID A national, distributed computing partnership for data-intensiveresearch
The OSG ALL-HANDS MEETING FOR 2020 has been postponed from March to late summer or early fall. We plan to announce new dates on March 13. For more information, see the Reschedule FAQs page.WHAT WE DO
The OSG facilitates access to distributed high throughput computing for research in the US. The resources accessible through the OSG are contributed by the community, organized by the OSG, and governed by the OSG consortium. In the last 12 months, we have provided more than 1.2 billion CPU hours to researchers across a wide variety ofprojects.
SUBMIT LOCALLY, RUN GLOBALLY Researchers can submit batch jobs from their home institution - or OSG-provided submit points - in order to access their local resources and expand elastically out to the OSG, leverage the distributed natureof our consortium.
SHARING IS KEY
_Sharing is a core principle of the OSG._ Over 100 million CPU hours delivered on the OSG in the past year were opportunistic: they would have remained on but idle if it wasn't for the OSG. Sharing allows individual researchers to access larger computing resources and large organizations to keep their utilization high.RESOURCE PROVIDERS
The Open Science Grid consists of computing and storage elements at over 100 individual sites spanning the United States. These sites, primarily at universities and national labs, range in size from a few hundred to tens of thousands of CPU cores. THE OSG SOFTWARE STACK The OSG provides an integrated software stack to enable high throughput computing; visit our technical documents website forinformation .
FIND US!
Are you a user wanting more computing resources? Are you a resource provider wanting to join our collaboration? If so, find us at the support desk.
To see the breadth of the OSG use, explore our accounting portal.
------------------------- Funded by the National Science Foundation under Grant No. 1148698. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.Details
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