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 theUniverse
Technology Advancing the frontiers of technologyEducate Training the scientists of tomorrow
Collaborate Bringing nations together through science
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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 theUniverse
Technology Advancing the frontiers of technologyEducate Training the scientists of tomorrow
Collaborate Bringing nations together through science
2 / 18
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 theUniverse
Technology Advancing the frontiers of technology
Educate Training the scientists of tomorrowCollaborate Bringing nations together through science
2 / 18
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 theUniverse
Technology Advancing the frontiers of technologyEducate Training the scientists of tomorrow
Collaborate Bringing nations together through science
2 / 18
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 theUniverse
Technology Advancing the frontiers of technologyEducate Training the scientists of tomorrow
Collaborate Bringing nations together through science
2 / 18
What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Multinationality
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Inventions and discoveries
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Inventions and discoveries
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Inventions and discoveries
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Inventions and discoveries
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Inventions and discoveries
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Summer Student Programme
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Large Hadron Collider (LHC)
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Data Centre
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Data Centre
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
My work project
CERN archives 10 TBof physics data per day!
Data stored on tapes mustendure for decades!!
How to protect data on tape backend? - Add CRC checksums.
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
My work project
CERN archives 10 TBof physics data per day!
Data stored on tapes mustendure for decades!!
How to protect data on tape backend? - Add CRC checksums.
10 / 18
What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
My work project
CERN archives 10 TBof physics data per day!
Data stored on tapes mustendure for decades!!
How to protect data on tape backend? - Add CRC checksums.
10 / 18
What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
My work project
CERN archives 10 TBof physics data per day!
Data stored on tapes mustendure for decades!!
How to protect data on tape backend?
- Add CRC checksums.
10 / 18
What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
My work project
CERN archives 10 TBof physics data per day!
Data stored on tapes mustendure for decades!!
How to protect data on tape backend? - Add CRC checksums.
10 / 18
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/swriting on tape (Reed-Solomon CRC algorithm): 130 MB/s
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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
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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/swriting on tape (Reed-Solomon CRC algorithm): 130 MB/s 11 / 18
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/swriting on tape (Reed-Solomon CRC algorithm): 130 MB/s 11 / 18
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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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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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Technology
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Environment
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Environment
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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Environment
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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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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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What is CERN? From quarks to bits Project on CRC protection Working @CERN Conclusion
Future is in...
for
Merci beaucoup :-)
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