GridWay: Open Source Meta-scheduling Technology for

Ruben S. Montero dsa-research.org

Open Source Grid & Cluster Oakland CA, May 2008 Contents

• Introduction • What is GridWay? • Architecture & Components • Scheduling Policies • Examples of Grid Deployments • WSRF Interface for GridWay • Sun Grid Engine Integration Introduction

z Resource selection: Where do I execute my job ? z Resource preparation: What do I need? z Job submission: How do I submit my job? z Job monitoring: How is my job doing? z Job migration: Is there any better resource? z Job termination: How do I get my output? Introduction z Meta-scheduler: Job to resource (other schedulers) matching (execution management). z Goal: Optimize the performance according to a given metric (performance model):

• Global Throughput

• Resource usage

• Application (ALS) – Stand-alone, HPC, HTC and self-adaptive

• User usage z Grid characteristics

• Heterogeneity (job requirements)

• Dynamism (high fault rate, load, availability, price)

• Site autonomy What is GridWay?

The GridWay meta-scheduler is a scheduler virtualization layer on top of basic Globus services (GRAM, MDS & GridFTP)

For the user • A LRM-like environment for submitting, monitoring, and controlling jobs For the developer • An standard-base development framework for Grid Applications For the sysadmin • A policy-driven job scheduler • User-side Grid Accounting For the Grid architect / solution provider • A modular component to use different infrastructures • A key component to deploy different Grids What is GridWay?

Globus Projects

GridWay

Globus Incubator Projects

Gridshib DDM LRMA

GRAADS Falkon

and many many more! Architecture

DRMAA • LRM-like Command Line Interface $> • OGF DRMAA & JAVA Bindings CLI • JSDL (Posix & HTC profiles) .C, .java • Array jobs, DAG workflows and MPI jobs .C, .java Applications

• Advanced (Grid-aware) scheduling policies

GridWay • Fault detection & recovery Scheduler Grid Meta-

• Straightforward deployment (basic services) Globus • Globus-based infrastructures Services • Component to deploy different Grids Grid Middleware Application-Infrastructure decoupling Application-Infrastructure

PBS SGE Infrastructure • highly dynamic & heterogeneous • high fault rate Components

DRMAA library CLI JobJob Submission Submission JobJob Monitoring Monitoring GridWay Core Request JobJob Control Control Manager JobJob Migration Migration Job Pool Host Pool Dispatch Scheduler Manager

Transfer Execution Information Manager Manager Manager

pre-WS WS MDS2 GridFTP RFT MDS2 MDS4 GRAM GRAM GLUE JobJob PreparationPreparation Resource Discovery JobJob TerminationTermination Resource Discovery Resource Monitoring JobJob MigrationMigration Resource Monitoring File Transfer Execution Information Services Services Services Scheduling Policies

• Rank Expressions • Fixed Priority Resource Policies • User Usage History • Failure Rate

Grid Scheduling = Job + Resource Policies

Pending Matching Resources for each job (user) Jobs Job Policies

• Fixed Priority • Urgent Jobs • User Share • Deadline • Waiting Time Enterprise Grids

Characteristics

‹ “Small” scale infrastructures (campus/enterprise) with one meta-scheduler instance

‹ Resources within the same administration domain that may be running different LRMS and be geographically distributed z Goal & Benefits

‹ Integrate heterogeneous systems

‹ Improve return of IT investment

‹ Performance/Usage maximization Enterprise Grids

Architecture Examples

Applications European Space Astronomy Center • DRMAA interface • Data Analysis from space missions • Portal Users • DRMAA • Command Line Interface

GridWay • One meta-scheduler • Grid-wide policies UABGrid, University of Alabama • Bioinformatics applications Globus Globus Globus Middleware

SGE Cluster PBS Cluster LSF Cluster

Infrastructure Partner Grids

Characteristics

‹ “Large” scale infrastructures with one or several meta-schedulers

‹ Resources belong to different administrative domains Goal & Benefits

‹ Large-scale, secure and reliable sharing of resources

‹ Support collaborative projects

‹ Access to higher computing power to satisfy peak demands Partner Grids Architecture Examples

(Virtual) Applications Organization EGEE-II • DRMAA interface • gLite-LHC interoperability Users Users • Science Gateways • Virtual Organizations Fusion: Massive Ray Tracing Biomed: CD-HIT (Worflow) GridWay GridWay •Multiple metaschedulers •(V)Organization-wide policies

AstroGrid-D, German Globus Globus Globus Middleware Astronomy Community Grid • Supercomputing resources • Astronomy-specific resources SGE Cluster PBS Cluster LSF Cluster • GRAM interface

• Multiple Admin. Domains Infrastructure • Multiple Organizations Globus Interoperability

• Different Middlewares (e.g. WS and pre-WS) • Different Data/Execution architectures • Different Information models • Integration through adapters Users • Global DN’s

GridWay

Globus/WS Globus/WS gLite gLite Globus/WS Globus/WS

SGE Cluster PBS Cluster PBS Cluster SGE Cluster PBS Cluster SGE Cluster WSRF Interface for Utility Computing

Applications • Standard functionality • Abstraction of the underlying DRMS • Implemented as GRAM jobmanager

GRAM RFT MDS • Virtualizes a whole Grid

GridWay

Middleware Drivers

Consumer/Provider relationships • Enterprise Grid GLOBUS GRID • Partner Grid • Other utilities... WSRF Interface for Utility Computing

• Access to different infrastructures with Users Applications the same adapters GridWay • EGEE managed as other resource

• Delegate identity/ “VO” certificates Globus • In-house/provider gateway GridWay • Access through legacy applications, portals...

Globus Globus gLite gLite Middleware

SGE Cluster PBS Cluster PBS Cluster SGE Cluster

Infrastructure

• Regional infrastructure Transfer Queues

z Communicate LRM systems with meta-schedulers (the other way around)

z Users keep using the same interface, even applications (e.g. DRMAA, site scripts...)

Users

Local Resources SGE Cluster

GridWay Grid Infrastructure (any type) Transfer Queue Job submitted to the Globus Globus Globus cluster but executed in the Grid SGE Cluster PBS Cluster LSF Cluster THANK YOU FOR YOUR ATTENTION !!!

Want to try it... TUTORIAL 11 (Thursday 13:30 – 15:00)

The GridWay Team z Ignacio M. Llorente z Javier Fontan z Ruben S. Montero z Jose Herrera z Eduardo Huedo Cuesta z Tino Vazquez

z Jose Luis Vazquez-Poletti