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READOUT LINK

READOUT LINK. Filippo Costa. ROB. FED. DDL. ROL. RORC. FRL. ROBIN. DIU. ROS. SIU. SLINK. CMC. SLINK64. TELL1. ROB. FED. DDL. ROL. READOUT LINKS. RORC. FRL. ROBIN. DIU. ROS. SIU. SLINK. CMC. SLINK64. TELL1. LEGEND. General picture. DAQ receiver card. FEE.

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READOUT LINK

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  1. READOUT LINK Filippo Costa

  2. ROB FED DDL ROL RORC FRL ROBIN DIU ROS SIU SLINK CMC SLINK64 TELL1 Filippo Costa - readout link

  3. ROB FED DDL ROL READOUT LINKS RORC FRL ROBIN DIU ROS SIU SLINK CMC SLINK64 TELL1 Filippo Costa - readout link

  4. LEGEND Filippo Costa - readout link

  5. General picture DAQ receiver card FEE Converter card readout link PC or crate (VME, Compact PCI) Filippo Costa - readout link

  6. Filippo Costa - readout link

  7. Filippo Costa - readout link

  8. Filippo Costa - readout link

  9. Filippo Costa - readout link

  10. IT’s Filippo Costa - readout link

  11. THE Filippo Costa - readout link

  12. SAME Filippo Costa - readout link

  13. THING (almost) Filippo Costa - readout link

  14. Filippo Costa - readout link

  15. ~2500 CHF (~1300 per link) Filippo Costa - readout link

  16. ~3300 CHF (~1100 per link) ~2500 CHF (~1300 per link) Filippo Costa - readout link

  17. ~3300 CHF (~1100 per link) ~2500 CHF (~1300 per link) 1550 CHF (~800 per link) Filippo Costa - readout link

  18. ALICE ATLAS CMS LHCb ~3300 CHF (~1100 per link) ~2500 CHF (~1300 per link) 1550 CHF (~800 per link) > 6000 CHF (~300 per link) Filippo Costa - readout link

  19. Filippo Costa - readout link

  20. No general software tools to debug data flow. Filippo Costa - readout link

  21. S-Link is a that can be implemented in an FPGA (not resources demanding) Filippo Costa - readout link

  22. Very robust link. • Cost is pretty low. Filippo Costa - readout link

  23. GOL Filippo Costa - readout link

  24. IN GENERAL Filippo Costa - readout link

  25. RUN 2 Filippo Costa - readout link

  26. We are busy updating the experiment for you and will be back shortly • Faster readout and higher data throughput for TPC and TRD. • Higher data throughput between HLT to DAQ. Filippo Costa - readout link

  27. PROTOCOL UPGRADE: • faster DDL protocol from 2 Gb/s to 6 Gb/s. • HARDWARE UPGRADE: • INPUT: from 2 ch@ 2Gb/s to 12 ch @ 6 Gb/s. • OUTPUT: from PCIe gen.1x4 to PCIe gen.2x8. • Current RORC firmware implemented on new hardware. • Same software framework, only driver upgrade to handle the new hardware. Filippo Costa - readout link

  28. We are busy updating the experiment for you and will be back shortly • 64-bits PCI technology , obsolete and causes problems for upgrading DAQ PCs. • Number of readout links will increase. • Reduce amount of RACK space. • Increase data throughput from ROS to HLT after LS1. Filippo Costa - readout link

  29. Use of the ALICE CRORC, but is called ROBINNP. • HARDWARE UPGRADE: • INPUT: from 3 ch @200 MB/s to 12 ch @ 200 MB/s (6Gb/s) • OUTPUT: from PCI 64 bit 66MHz to PCIe gen.2x8. • Bigger buffering capacity (up to 4 GB of DDR2/3). • New firmware (the PPC present in the ROBIN will be moved out and implemented in software). Filippo Costa - readout link

  30. Same hardware – different features Filippo Costa - readout link

  31. ALICE CRORC FIRMWARE Push Buffer Descriptor #5 Buffer Descriptor #4 Buffer Descriptor #3 Buffer Descriptor #2 Software Buffer Descriptor #1 Receive Address FIFO Firmware Receive Report FIFO Receiver DMA controller DMA report #5 DMA report #4 DDL DMA report #3 DMA report #2 DMA report #1 PC memory, managed by PHYSMEM PCI bus D-RORC Filippo Costa - readout link

  32. ATLAS ROBINNP firmware Filippo Costa - readout link

  33. We are busy updating the experiment for you and will be back shortly • Hardware is aging (Myrinet) … needs for new components and replacements. • New components are not compatible with the current hardware. • Faster readout and higher data throughput,needed by trigger and HCAL. Filippo Costa - readout link

  34. Filippo Costa - readout link

  35. The existing DAQ receiver card (FRL) stays in place to support legacy FEDs. • New FEROL card has 2 x 10 Gb/s and 2 x 6 Gb/s channels. • No CMC , but IPCORE, same interface to the FEE. • The new 6 Gb/s link has re-transmit feature. • 500 MB internal buffer. • 2 input links are treated independently and can share the same 10 Gb/s. • The second link 10 Gb/s will be used to receive 10 Gb/s in future (1 Input 1 Output) • 10 Gb/s reduced TCP/IP implemented in FPGA. Filippo Costa - readout link

  36. Filippo Costa - readout link

  37. ABORT/RST Filippo Costa - readout link

  38. CONGESTION CONTROL Filippo Costa - readout link

  39. Filippo Costa - readout link

  40. The don’t have special plan for the upgrade during LS1 … however … Filippo Costa - readout link

  41. Look (again) what LHCb has done Filippo Costa - readout link

  42. They have achieved goals that other experiments are planning in the future: • Common readout unit (TELL1) used by all the detector groups. • Use of Ethernet protocol. Filippo Costa - readout link

  43. RUN 3 Filippo Costa - readout link

  44. LS2 Online Upgrade DAQ and HLT ~ 2500 DDL3s 10 Gb/s (~1 TB/s in input) CLK FLP ITS RORC3 EVB farm FLP TPC RORC3 FLP TRD RORC3 FLP EMCal RORC3 L0 FLP PHOS RORC3 FLP TOF RORC3 FLP Muon RORC3 L0L1 FLP FTP RORC3 Trigger Detectors Filippo Costa - readout link

  45. ALICE readout link Det. Read-Out FPGA SIU IP CORE Filippo Costa - readout link

  46. DDL 3 (UDP Ethernet) DDL optical fibre SFP+ 10 Gb/s 10 Gb/s embedded in the motherboard XILINX VIRTEX 6 Filippo Costa - readout link

  47. DAQ+DCS proposal of sharing DDL3 Detector Readout Electronics DCS DCS data FPGA readout data taking in progress… Physics DATA DCS DATA Physics DATA DCS DATA Physics DATA Our proposal is to share the same physical link between the 2 data traffics: 99% PHYSICS data 1% or less, DCS monitoring data Filippo Costa - readout link

  48. Filippo Costa - readout link

  49. CONGRATULATIONS TO ALL OF US !!!! Filippo Costa - readout link

  50. Some remarks … • ALICE, ATLAS, CMS and LHCb have different physics goals, but from the readout link point of view they try to achieve the same thing, move data from A to B. Why things are so different? Requirements and data throughput are not the same, but features could be adapted, instead writing them from scratch. • Common effort to standardize the link and the electronics, ultimate goal: • common readout unit for detector groups, • use of commercial hardware and industrial-standard protocols. • How to increase the knowledge sharing between all the experiments groups? It is always a joy to share good experience with a protocol or a link, but maybe we could learn more from things that went wrong (and usually are not showed at conferences) Filippo Costa - readout link

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