CERN is an international physics laboratory established in 1954, focused on research to answer fundamental questions about the universe and advance technology. It also emphasizes education and collaboration among nations through science. Key projects and technologies mentioned include the Large Hadron Collider and the implementation of CRC protection for data storage.

1. Summer @CERN
Karel Ha

2. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
CERN
= international physics laboratory established in 1954
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3. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
CERN
= international physics laboratory established in 1954
Mission:
Research Seeking and finding answers to questions about the
Universe
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4. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
CERN
= international physics laboratory established in 1954
Mission:
Research Seeking and finding answers to questions about the
Universe
Technology Advancing the frontiers of technology
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5. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
CERN
= international physics laboratory established in 1954
Mission:
Research Seeking and finding answers to questions about the
Universe
Technology Advancing the frontiers of technology
Educate Training the scientists of tomorrow
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6. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
CERN
= international physics laboratory established in 1954
Mission:
Research Seeking and finding answers to questions about the
Universe
Technology Advancing the frontiers of technology
Educate Training the scientists of tomorrow
Collaborate Bringing nations together through science
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7. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Multinationality
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8. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Inventions and discoveries
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9. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Inventions and discoveries
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10. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Inventions and discoveries
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11. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Inventions and discoveries
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12. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Inventions and discoveries
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13. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Summer Student Programme
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14. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Large Hadron Collider (LHC)
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15. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
ATLAS
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16. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
CMS
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17. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Data Centre

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Data Centre
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19. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
My work project
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20. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
My work project
CERN archives 10 TB
of physics data per day!
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21. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
My work project
CERN archives 10 TB
of physics data per day!
Data stored on tapes must
endure for decades!!
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22. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
My work project
CERN archives 10 TB
of physics data per day!
Data stored on tapes must
endure for decades!!
How to protect data on tape backend?
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23. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
My work project
CERN archives 10 TB
of physics data per day!
Data stored on tapes must
endure for decades!!
How to protect data on tape backend? - Add CRC checksums.
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24. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Cyclic Redundancy Check (CRC) protection
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25. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Cyclic Redundancy Check (CRC) protection
writing on tape (no CRC): 250 MB/s
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26. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Cyclic Redundancy Check (CRC) protection
writing on tape (no CRC): 250 MB/s
writing on tape (Reed-Solomon CRC algorithm): 130 MB/s 11 / 18

27. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Cyclic Redundancy Check (CRC) protection
writing on tape (no CRC): 250 MB/s
writing on tape (Reed-Solomon CRC algorithm): 130 MB/s 11 / 18

28. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Multithreaded implementation
CRCs
Compute
Threads
Input
Ouput
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29. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Tape-write on 4 cores with HyperThreading
0
50
100
150
200
250
300
0 2 4 6 8 10 12 14 16
MB/s
n threads
Reed-Solomon on tpsrv212, output to tape
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30. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Technology
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31. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Environment
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32. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Environment

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Environment
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34. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
People
Data Storage and Services group photo

35. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
People
Data Storage and Services group photo
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36. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Future is in...
for
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37. What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Future is in...
for
Merci beaucoup :-) 18 / 18