EMI Compute Elements comparison chart

Functionality A-REXSorted ascending CREAM UNICORE/X
Downloading job description documents (pulling on behalf of users) - - e
Support for LRMS reservation features - -
Remote service management using Grid credentials -
Monitoring instrumentation - - j
Collecting accounting information (usage record) APEL, SGAS, OGF-UR APEL, DGAS, OGF-UR OGF-UR
Publishing information about itself GLUE2, GLUE1.2/1.3, ARC GLUE2, GLUE1.3 GLUE2, UNICORE
Providing job status information (remote query)
User authorisation using Grid credentials and local policies
Mapping users to local UIDs
Act on behalf of users (delegation)
Initialising pre-installed application environment -
Interrupting jobs upon user request
Restarting jobs upon user request
Cleaning up user/job session
Self-limiting behavior (no new jobs if the system is overloaded)
Accepting input files pushed by users
CE downloads job input files from arbitrary user-defined locations
CE provides job outputs to users (pulled by users)
CE uploads job outputs to arbitrary user-defined location on behalf of users
Caching input files - -
Throttle data transfer priorities - -
Possibility to set up multiple front-ends for the same resource (load sharing)
Works even if there is no common file system between the head node and the worker nodes -
Server logs
Log rotation
Job draining for maintenance
Notifying about job status changes by notifications a b c
Possibility to use external policy decision service d
Schedule job start (LRMS submission) for a certain time f -
Integrated file management and data transfer capabilities g g
Possibility to adjust LRMS submission script h h
Support for administrator-defined file systems (WORK, SCRATCH, ...) i
Multiple protocols supported for data transfer HTTP(S), GSIFTP, FTP, SRM, LFC HTTP(S), GSIFTP HTTP, GSIFTP, FTP, SCP, UNICORE
Information, accounting  
Authorisation, security  
Task execution  
Data handling  
Configuration, administration  
Converting Grid jobs to LRMS submission scripts PBS, LSF, SGE, SLURM, LoadLeveler, Condor, fork PBS, LSF, SGE, Condor (incomplete) PBS, LSF, SGE, SLURM, LoadLeveler, fork
Accepting job description documents pushed by users xRSL, JSDL, JDL JSDL, JDL JSDL

a e-mail only
b via CEMON service
c depends on LRMS
d In development
e Requires an extension
f Will not submit the job before the specified time
g Only for data associated with current jobs
h By manual intervention
i Within the A-REX file system structure

-- OxanaSmirnova - 11-Nov-2011

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Topic revision: r2 - 2011-11-11 - OxanaSmirnova
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