Difference between revisions of "Discussion of: RT data processing for ALICE HLT"
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(Created page with " * David: ** Parts of former (Run 1) compute infrastructure used for opportunistic GRID. ** RORC(ALICE) vs. FELIX(ATLAS, sPHENIX) *** RORC: 12 optical links, 3 QSFPs FELIX: 4...") |
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*** RORC: 12 optical links, 3 QSFPs FELIX: 48 optical links, 2 MTPs | *** RORC: 12 optical links, 3 QSFPs FELIX: 48 optical links, 2 MTPs | ||
*** RORC: 79.2 Gbps (12x6.6Gpbs/channel) FELIX: up to 100Gbps | *** RORC: 79.2 Gbps (12x6.6Gpbs/channel) FELIX: up to 100Gbps | ||
| + | ** Cluster management/OS: | ||
| + | *** Booting, OS installation: Foreman + PXE-boot | ||
| + | *** OS: CERN CentOS 7 | ||
| + | *** Package installation/configuration: Puppet | ||
| + | *** Node health and metrics: Zabbix | ||
| + | *** "''...the complete cluster can be rebuilt, including the final configuration, in roughly three hours''" | ||
| + | ** "''The old approach, using POSIX pipes, began to cause a significant CPU load through many system calls and was consequently replaced by a shared-memory based communication.''" | ||
Latest revision as of 19:12, 29 August 2021
- David:
- Parts of former (Run 1) compute infrastructure used for opportunistic GRID.
- RORC(ALICE) vs. FELIX(ATLAS, sPHENIX)
- RORC: 12 optical links, 3 QSFPs FELIX: 48 optical links, 2 MTPs
- RORC: 79.2 Gbps (12x6.6Gpbs/channel) FELIX: up to 100Gbps
- Cluster management/OS:
- Booting, OS installation: Foreman + PXE-boot
- OS: CERN CentOS 7
- Package installation/configuration: Puppet
- Node health and metrics: Zabbix
- "...the complete cluster can be rebuilt, including the final configuration, in roughly three hours"
- "The old approach, using POSIX pipes, began to cause a significant CPU load through many system calls and was consequently replaced by a shared-memory based communication."