1. Introduction to P-GRADE Portal hands-on
Miklos Kozlovszky
MTA SZTAKI

2. Open the tutorial sheets on your desktop

3. portal.p-grade.hu/multi-grid
Infrastructure
MyProxy name:
GILDA:budapest see-grid: budapestsg
MyProxy password:
GILDA:….. see-grid: ….
Client machines
portal.p-grade.hu/multi-grid
P-GRADE Portal (SZTAKI, Budapest) based on v2.7
GILDA MyProxy server
Proxy
Proxy download
gLite
GILDA Grid services
Miklos Kozlovszky – Biomed Grid School ‘ May 2009, Varenna, Italy

4. Exercise 1 Import and execute a pre-defined application Traffic simulation
Generates the road network map of Manchester
Put traffic lights and cars on the map.
Simulate road traffic.
Compares and visualizes the density of cars
Miklos Kozlovszky – Biomed Grid School ‘ May 2009, Varenna, Italy

5. Exercise 2 Create a matrix multiplication workflow (one job workflow)
Job executable:
C code, compiled on GILDA UI
Expects command line parameters: M V
Knows nothing about the grid
Job input/output files:
Program reads matrixes from two files called INPUT1 and INPUT2
Program writes result matrix into file called OUTPUT
Local execution on a PC: ./multiply M V
Task: Execute the program on EGEE, transfer input and output files in Sandboxes from the client
INPUT1
INPUT2
binary
OUTPUT
Miklos Kozlovszky – Biomed Grid School ‘ May 2009, Varenna, Italy

6. Further Exercises Create a matrix multiplication workflow
Multi-job workflow
Create and submit a bioperl based application
Single job workflow
Create and submit a java based application
Miklos Kozlovszky – Biomed Grid School ‘ May 2009, Varenna, Italy

7. Proxy download information (login to GILDA):
Accounts
Login to Portal:
Portal accounts: user01 – user40 use your number Portal passwords:
Proxy download information (login to GILDA):
Hostname: myproxy.ct.infn.it
Port: 7512
Account for GILDA: budapest
Account for SEE-GRID: budapestsg
Password:…
No need to wait for jobs to finish – proceed to next exercise
Miklos Kozlovszky – Biomed Grid School ‘ May 2009, Varenna, Italy

8. Job level fault tolerance
Tips
Exclude erroneous sites from the brokering process:
Open the JDL editor of the job
Write other.GlueCEInfoHostname != “hostname” into the “Ranks & requirements” window
Automatic job resubmission:
Add ShallowRetryCount = 3 into JDL
Miklos Kozlovszky – Biomed Grid School ‘ May 2009, Varenna, Italy

9. To become a user of P-GRADE/gUSE Portals
Become user of EGEE if you are still not..
P-GRADE Portal
Select a portal installation & request account:
Portal installations
Miklos Kozlovszky – Biomed Grid School ‘ May 2009, Varenna, Italy

10. Miklos Kozlovszky m.kozlovszky@sztaki.hu www.lpds.sztaki.hu
Thank you
Miklos Kozlovszky