EMI Compute Elements comparison chart

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

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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