EJFAT Group Meeting Jun. 16, 2022
Jump to navigation
Jump to search
The meeting time is 11:00am.
Connection Info:
You can connect using ZoomGov Video conferencing (ID: 161 012 5238). (Click "Expand" to the right for details -->):
Meeting URL https://jlab-org.zoomgov.com/j/1610125238?pwd=QnEvcjV6VFFndWZsQW15SmJKU0RJZz09&from=addon Meeting ID 161 012 5238 Passcode 503371 Want to dial in from a phone? Dial one of the following numbers: US: +1 669 254 5252 or +1 646 828 7666 or +1 551 285 1373 or +1 669 216 1590 or 833 568 8864 (Toll Free) Enter the meeting ID and passcode followed by # Connecting from a room system? Dial: bjn.vc or 199.48.152.152 and enter your meeting ID & passcode
Agenda:
- Previous meeting
- Status:
- Using ESnet FPGA f/w build 28 April
- Specs
- Jumbo Frames
- arp, ping, ICMP filtering
- Port entropy
- Script based LB Control Plane
- Support C libraries for LB Host Control Plane - in
unit testcode reviewlegal review - ESnet smartnic open-source GitHub repo - in legal review
- ESnet private, forkable Jlab P4 and simulations GitHub repo - in legal review
- ERSAP feed end bottleneck needs investigation; Timmer's blaster may provide relief
- New machines (6) rec'd, installed w/ Ubuntu 20.04 on EJFAT subnet (VLAN 937 172.19.22.0/24)
- Spare EJFAT equip loaners:
- (4) DAQ dev machines indra-s[1-3] 129.57.29/109.23[0-2]
- alkaid: 24 Xeon Gold 3.4 GHz cores, 100Gbs
- indra-s1: 24 Xeon Gold 3.0 GHz cores, 100Gbs
- indra-s2: 32 Xeon Gold 3.2 GHz cores, 100Gbs
- indra-s3: 32 Xeon Gold 2.3 GHz cores, 100Gbs, 750GB ram disk
- (4) DAQ Farm machines dafarm6[1-4] currently on 129.57.29.17[1-4] - each 32 Xeon 2.0Ghz cores - 1 Gbs NIC + (4) 10Gbs Spare NICs
- (4) Unbuilt DAQ Farm machines - each 32 Xeon 2.0Ghz cores - 1 Gbs NIC + (4) 10Gbs Spare NICs
- PR408549 (6) 100Gbs NICs - ETA 1 July
- PR408870 PR408938 (2) 100Gbs Arista switches,
transceivers, cables, etc - ETA1 July5 October
- (4) DAQ dev machines indra-s[1-3] 129.57.29/109.23[0-2]
- Using ESnet FPGA f/w build 28 April
- Next Steps:
- EJFAT VLAN Checkout
- Network Performance:
- FPGA LB Throughput - max sustained 90Gbs
- Host NICs
- Host S/W Reassembly - better algorithms, buffering, asynchronicity, etc.
- EJFAT UDP Transmission Performance
- Need better parameters for event reassembly/reconstruction
- Control Plane
- Will interact with SLURM / Kubernetes
- Python based (?)
- Control Plane daemon for compute host (?)
- Demonstrate CP based flexibility/elasticity
- Look at iperf2 for network testing
- Look at ROCE / NIC
- DPDK - ESnet reports can stream 100 Gbps using DPDK.
- SLURM env for EJFAT VLAN (Hess)
- DAQ/VTP Data Generation Test Harness
- Vivado Licesnses for new machines (?) (Singh)
- ACAT 2022 - September/Italy - Abstract / Paper
- RT2022 - August 01-05 Conference
- RT 2022 Paper
- Back Burner / Downstream:
- Hall-B FT calorimeter and hodoscope streaming readout test
- May be able to use Abbott's indra-s1 setup
- May be able to use new VTP f/w with Hall-B VTP's
- CODA 3.10 + ERSAP for new VTP f/w
- CODA 2.0 (non-streaming) for old VTP f/w
- Diagram
- Hall-B to start taking data June 8
- Hall B VTPs on .167. subnet
- HOSS
- parallelize writing of raw data files
- distribute raw data across multiple compute nodes for calibration skims
- 1 Gbs at hi-luminosity
- Hall-D comms with DAQ 109 subnet require network customization; (EJFAT subnet)
- Hall-D EJFAT use case
- Hall-D EJFAT Network Diagram
- IPV6 testing
- Hall-B FT calorimeter and hodoscope streaming readout test
- AOT
Notes:
- numa tools on ubuntu:
- sudo apt install hwloc-nox
- sudo apt install numactl
- lstopo
- lstopo
- numactl --hardware
- Open Nic Shell
- To control the scheduling class, you can use the "chrt" command. To pin to CPUs, use the "taskset" command. Or use the underlying syscalls.
- kernel dameon threads
- handle NIC driver interrupts
- set scheduling class to sched_rt of reassembly process
- want to set cpu socket of reassembly in common NUMA domain as NIC
- DPDK will own NIC bypassing kernel, etc.; packetgen_dpdk