alice offline meeting 27 march 2008 artem harutyunyan [email protected]
TRANSCRIPT
Banking Service in AliEn
About banking in GridBanking in AliEn (ALICE VO)Setting price for jobs and CEsDistribution of credits in VOExecution of bank commands from AliEn
Summary2
Banking Service in AliEn
General ideas: Users have to pay for the jobs Teams have to earn money (alions) by
providing resources Jobs with higher price get higher priority
Reasons for having banking service in Grid Users gain the control over the priorities of
their jobs and can boost them if needed Teams are motivated to provide more resources
with higher quality and availability Users are motivated to be more accurate in
their usage of Grid resources3
Banking Service in AliEn 4
Site 1
Site 2
Site 3
Job Manager
1. User sends a job (sets price in JDL)
2. Job is
sent to sit
e
3. Job is
DONE
5. Gets DONE jobs Database
4. Job is stored in DB
Charging serviceBanking service
6. Charges for jobs(from users’ accountsTo sites’ accounts)
... and makes deposit on tax account
Job_Cost = Consumed_SI2K * Nominal_Price * Job_Price
Banking Service in AliEn 5
• CE price is set in LDAP for each site• CE accepts for execution only jobs for which users are willing
to pay price higher or equal to the CE price
Not a real price, but a factor of ‘nominal
price’ defined for VO
• Job price for SI2K unit to be consumed is set in the JDL
Banking Service in AliEn6
T0
T1
T2T2
T1
T2T2
T1
T2T2
PWG 1 PWG 2 PB
User group User group User group User group
User group
Banking Service in AliEn
Circulation is done automatically (by Charge service)
Configured in LDAP
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Banking Service in AliEn 8
• To execute bank command (e.g. account balance checking) from AliEn shell user has to type:
> gold GOLD_COMMAND [OPTIONS]
• For the description of commands and their options please refer to Gold user’s manual:
http://www.clusterresources.com/products/gold/docs/userguide.pdf
Banking Service in AliEn 9
User commands Admin commands
Banking Service in AliEn
The banking system: Is implemented as an add-on to AliEn
(it's up to the user whether to use provided features or not)
Gives an additional degree of freedom for the improvement of job scheduling
Provides users with control over job priorities based on simple economy model
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Banking Service in AliEn
Many thanks to: Predrag Buncic for the original idea and
professional support Pablo Saiz, Catalin Cirstoiu and Costin
Grigoras for helping to solve technical problems
The work was supported by ALICE Offline, Calouste Gulbenkian Foundation and Swiss Fonds “Kidagan”
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