Re:LDPC ACC100 Decoding function validation error

Tom_Q · ‎07-27-2023

Hi,

I am experiencing some issues when trying to set up the ACC100 LDPC card. While following the steps from pf-bb-config However, we experience the following issues:

Baseband devices using DPDK-compatible driver
=============================================
0000:ca:00.0 'Device 0d5c' drv=vfio-pci unused=
0000:cb:00.0 'Device 0d5d' drv=vfio-pci unused=
0000:cb:00.1 'Device 0d5d' drv=vfio-pci unused=

zq40@tc319-srv2:/opt/dpdk-stable-21.11.2-older/app/test-bbdev$ dmesg | grep "DMAR: IOMMU"
[    0.457583] DMAR: IOMMU enabled
[    0.457977] DMAR: IOMMU enabled

zq40@tc319-srv2:/opt/dpdk-stable-21.11.2/app/test-bbdev/test_vectors$ sudo dpdk-test-bbdev -c F0 -a cb:00.0 --vfio-vf-token=00112233-4455-6677-8899-aabbccddeeff -- -c validation -v ldpc_dec_v2342_drop.data
[sudo] password for zq40:
EAL: Detected 56 lcore(s)
EAL: Detected 2 NUMA nodes
Option -w, --pci-whitelist is deprecated, use -a, --allow option instead
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: Probing VFIO support...
EAL: VFIO support initialized
EAL:   using IOMMU type 1 (Type 1)
EAL: Probe PCI driver: intel_acc100_vf (8086:d5d) device: 0000:cb:00.0 (socket 1)
WARNING: Num of operations was not provided or was set 0. Set to default (64)
WARNING: Burst size was not provided or was set 0. Set to default (32)
WARNING: Num of lcores was not provided or was set 0. Set to value from RTE config (4)
===========================================================
Starting Test Suite : BBdev Validation Tests
Test vector file = ldpc_dec_v2342_drop.data
Device 0 supports 0 < N <= 0 queues, not 0
rte_bbdev_setup_queues(0, 0, 1) ret -22
Adding active bbdev cb:00.0 skipped
No suitable devices found!
 + Test suite setup BBdev Validation Tests skipped!
 + ------------------------------------------------------- +

We followed the pf_bb_config README and configured the ACC100 as directed by the tutorial, but it seems that the function fails when trying to set up queues.

The other thing we tried instead is to use igb_uio to drive our acc100 card,

sudo dpdk-devbind.py -b igb_uio ca:00.0
zq40@tc319-srv2:/opt/dpdk-stable-20.11.5/app/test-bbdev$ cat /sys/bus/pci/devices/0000\:ca\:00.0/sriov_totalvfs
16
echo 16 | sudo tee /sys/bus/pci/devices/0000\:ca\:00.0/max_vfs
echo 16 | sudo tee /sys/bus/pci/devices/0000\:ca\:00.0/sriov_numvfs

I tried both to configure the VFs through PF by both trying the vf/pf.cfg from the pf_bb_config. And we are able to avoid the previous error we saw when setting up the queues as:

zq40@tc319-srv2:/opt/dpdk-stable-20.11.5/app/test-bbdev$ sudo dpdk-test-bbdev -c F0 -a cb:00.0 --vfio-vf-token=00112233-4455-6677-8899-aabbccddeeff -- -c validation -v ./ldpc_dec_default.data

EAL: Detected 56 lcore(s)

EAL: Detected 2 NUMA nodes

EAL: Detected static linkage of DPDK

EAL: Multi-process socket /var/run/dpdk/rte/mp_socket

EAL: Selected IOVA mode 'PA'

EAL: Probing VFIO support...

EAL: VFIO support initialized

EAL: Probe PCI driver: intel_acc100_vf (8086:d5d) device: 0000:cb:00.0 (socket 1)

WARNING: Num of operations was not provided or was set 0. Set to default (64)

WARNING: Burst size was not provided or was set 0. Set to default (32)

WARNING: Num of lcores was not provided or was set 0. Set to value from RTE config (4)


===========================================================

Starting Test Suite : BBdev Validation Tests

Test vector file = ./ldpc_dec_default.data

+ ------------------------------------------------------- +

== test: validation

dev:cb:00.0, burst size: 32, num ops: 64, op type: RTE_BBDEV_OP_LDPC_DEC

The test program just hung there with no progress.

It would be much appreciated if you could provide any help, I have also attached .txt files including the printouts by running test-bbdev with strace.

Best

Devi_Intel · ‎07-31-2023

Greeting Tom,

Thank you for posting Ethernet Community. I'm here to follow up case as per subject. Appreciate you can follow below Support with

DPDK https://www.dpdk.org/ kindly refer or open an Intel Premier Support case at https://www.intel.com/content/www/us/en/secure/forms/intel-premier-support/enrollment.html (Required Login/Create new account)

If you wish to support thru community case you may refer to the link below as well

https://community.intel.com/t5/Embedded-Connectivity/bd-p/embedded-networking-connectivity

We will follow up after 3 business days in case we don't receive a response.

Thank you & Best Regards,

Devi_ Intel

Devi_Intel · ‎08-04-2023

Greetings Tom_Q

Regarding your case number 05928775, we are following up to find out if you were able to complete the actions we previously recommended.

Please reply to this thread to confirm, so we can continue helping with a resolution. Looking forward to receiving your reply

Thank you & Best Regards,

Devi_Intel

Devi_Intel · ‎08-06-2023

Greetings Tom_Q,

Your issue #05928775 is now considered resolved, therefore we are proceeding to close this ticket.

If you have any more questions in the future, please don't hesitate to post a new question, as this thread will no longer be monitored.

Thank you & Best Regards,

Devi_Intel

Minelin · ‎05-08-2025

Hi, @Tom_Q , I also have the same issue, do you know how to fix it,Thanks.