Resources#

FAQs#

Where is the hardware bill of material (BOM)?

The complete qualified ARC-OTA BOM is located in the Procure the Hardware chapter of the Installation Guide.

Does the platform support MU-MIMO?

ARC-OTA does not offer MU-MIMO integrated interoperability; however, the same platform is capable of adding software features for MU-MIMO.

Which frequency bands does the platform support?

ARC-OTA offers a tested reference for n48 and n78 sub-6 frequency bands.

Which RF parameters may require additional tuning for specific environments beyond the default config?

pusch_TargetSNRx10, pucch_TargetSNRx10, ssPBCH_BlockPower, min_rxtxtime, TDD Patterns, RU Attenuations

How can I apply for an experimental license in United States?

Review the application located at https://apps2.fcc.gov/ELSExperiments/pages/login.htm. If you have a program experimental license (https://apps.fcc.gov/oetcf/els/index.cfm), you can also use it for the Innovation Zone areas (Boston and the PAWR platforms) by submitting a request on that website.

Where can I find utility RF tools and calculators?

See Tools for RF Wireless.

Is GPS needed?

Yes, a GPS signal is necessary to drive precision timing for 5G networks. In case a GPS signal is inaccessible, the date command can be used as a workaround. This command is useful for those deployments where there is no timing reference (like GNSS) but needs Qg 2 to act as a GrandMaster (GM) to propagate time and synchronization over PTP to slave units.

When using two GMs, you can manually set the date and time on the first one and connect it’s 1PPS/ToD output to the 1PPS/ToD port (configured as input) of the second GM. The second GM then outputs PTP messages with a clock class=6.

How can I check OS and kernel version and configuration?

Use the following commands:

cat /proc/cmdline
 BOOT_IMAGE=/boot/vmlinuz-5.4.0-65-lowlatency root=UUID=d0bc583b-6922-4e70-af14-92b624fe1bbe ro default_hugepagesz=1G hugepagesz=1G hugepages=16 tsc=reliable clocksource=tsc intel_idle.max_cstate=0 mce=ignore_ce processor.max_cstate=0 intel_pstate=disable audit=0 idle=poll isolcpus=2-21 nohz_full=2-21 rcu_nocbs=2-21 rcu_nocb_poll nosoftlockup iommu=off intel_iommu=off irqaffinity=0-1,22-23
uname -a
 Linux dev01 5.4.0-65-lowlatency #73-Ubuntu SMP PREEMPT Mon Jan 18 18:17:38 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

Useful Shell Scripts#

Use the following shell script to build cuBB (create the script in /opt/nvidia/cuBB):

#!/bin/bash
SCRIPT=$(readlink -f $0)
SCRIPT_DIR=$(dirname $SCRIPT)
echo running $SCRIPT
echo running $SCRIPT_DIR
export cuBB_SDK=${SCRIPT_DIR}
insModScript=${SCRIPT_DIR}/cuPHY-CP/external/gdrcopy/
echo $insModScript
cd $insModScript && make && ./insmod.sh && cd -
export LD_LIBRARY_PATH=$cuBB_SDK/gpu-dpdk/build/install/lib/x86_64-linux-gnu
echo $LD_LIBRARY_PATH | sudo tee /etc/ld.so.conf.d/aerial-dpdk.conf
sudo ldconfig
echo "perhaps you want to: "
echo "mkdir build && cd build && cmake .. "
mkdir -p build && cd $_ && cmake .. && time chrt -r 1 taskset -c 2-20 make -j

Use the following shell script to start cuphycontroller (create the script in /opt/nvidia/cuBB):

#!∕bin∕bash

sudo nvidia-smi -pm 1

sudo nvidia-smi -i 0 -lgc $(sudo nvidia-smi -i 0 --query-supported-clocks=graphics --format=csv,noheader,nounits | sort -h | tail -n 1)

SCRIPT=$(readlink -f $0)
SCRIPT_DIR=$(dirname $SCRIPT)
echo running $SCRIPT
echo running $SCRIPT_DIR
export cuBB_SDK=${SCRIPT_DIR}
insModScript=${SCRIPT_DIR}/cuPHY-CP/external/gdrcopy/
echo $insModScript
cd $insModScript && ./insmod.sh && cd -
export LD_LIBRARY_PATH=$cuBB_SDK/gpu-dpdk/build/install/lib/x86_64-linux-gnu:$cuBB_SDK/build/cuPHY-CP/cuphydriver/src
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/opt/mellanox/gdrcopy/src
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/opt/mellanox/dpdk/lib/x86_64-linux-gnu:/opt/mellanox/doca/lib/x86_64-linux-gnu
echo $LD_LIBRARY_PATH | sed 's/:/\n/g' | sudo tee /etc/ld.so.conf.d/aerial-dpdk.conf
sudo ldconfig
export GDRCOPY_PATH_L=$cuBB_SDK/cuPHY-CP/external/gdrcopy/src
export CUDA_MPS_PIPE_DIRECTORY=/var
export CUDA_MPS_LOG_DIRECTORY=/var

sudo -E nvidia-cuda-mps-control -d
sudo -E echo start_server -uid 0 | sudo -E nvidia-cuda-mps-control
sleep 5
echo "perhaps you want to: "
echo "sudo -E LD_LIBRARY_PATH=$cuBB_SDK/gpu-dpdk/build/install/lib/x86_64-linux-gnu/ ./build/cuPHY-CP/cuphycontroller/examples/cuphycontroller_scf P5G_SCF_FXN"
sudo -E ./build/cuPHY-CP/cuphycontroller/examples/cuphycontroller_scf P5G_SCF_FXN
sudo ./build/cuPHY-CP/gt_common_libs/nvIPC/tests/pcap/pcap_collect

Hands-on CUDA-C#

To learn CUDA and learn teach it to others, refer to the NVIDIA/UIUC Accelerated Computing Teaching Kit, which outlines each module’s organization.

Additional Help#

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