Yes, I have tried with a single connection and also with different FPGA
images (HG and XG).
At the moment, the first setup considers one N310 connected to the Dell
PowerEdge server and the other N310 connected to the Dell Precision
3650. Thus, for both setups, one USRP per host.
For both hosts:
* Virtualization support and Intel C-states disabled
* CPU governor in performance state (all cores run at maximum clock)
* Maximum send buffer size and maximum receive buffer size at 33554432
* Ring buffers at max capacity of each NIC (2047 for Broadcom BCM57414
and 4096 for Intel X520-DA2)
Regarding the addresses:
* Setup 1 (Dell PowerEdge + N310)
o Dell PowerEdge interface 0: 192.168.10.1/24, 9000MTU or 8000MTU
o Dell PowerEdge interface 1: 192.168.20.1/24, 9000MTU or 8000MTU
o N310 sfp0: 192.168.10.2/24, 9000MTU or 8000MTU
o N310 sfp1: 192.168.20.2/24, 9000MTU or 8000MTU
o Management interface: 192.168.1.46
* Setup 2 (Dell Precision 3650 + N310)
o Dell PowerEdge interface 0: 192.168.10.1/24, 9000MTU or 8000MTU
o Dell PowerEdge interface 1: 192.168.20.1/24, 9000MTU or 8000MTU
o N310 sfp0: 192.168.10.2/24, 9000MTU or 8000MTU
o N310 sfp1: 192.168.20.2/24, 9000MTU or 8000MTU
o Management interface: 192.168.1.49
An update about the errors: if I run the UHD benchmark app, most of the
time it returns "SSSSSSSSSSSSSSSSSSSSSSS" and "[D00:00:06.440490918]
Detected Rx sequence error.".
However, it may happen that the benchmark app does not start at all (at
least for one interface), returning the following error:
[ERROR] [RFNOC::GRAPH] IO Error during GSM initialization.
EnvironmentError: IOError: Timed out getting recv buff for management
transaction
Thank you.
Federico
On 27/07/22 20:00, Marcus D. Leech wrote:
On 2022-07-27 12:22, Federico Civerchia wrote:
Yes, errors with UHD benchmarks, ping packet loss and iperf3 packet
loss on both setups.
The patch cables are new and 3mt long (always bought from FS)
Federico
Is this two different N310 on two different computers, or a single
N310 on two computers?
Have you tried with just a *single* 10GiGe connection? What are the
setups of your 10GIGe NIC cards in terms of ip address settings, etc?
On 27/07/22 18:18, Marcus D. Leech wrote:
On 2022-07-27 12:15, Federico Civerchia wrote:
Hi Rob, Marcus,
thank you for your answers.
Yes, I have packet loss with ping and also with iperf3 (considering
udp) at low rates (500Mb, 1Gb).
From the host side I can also see continuous disconnection and
re-connection of the link. For the Intel X520-DA2 NIC, I have
bought Intel SFP+ (E10GSFPSR) but this does not resolve the issue.
I would like to clarify my setup, maybe it can help to find out
what is going wrong:
* First setup:
o Dell PowerEdge R550 (2xXeon Gold) equipped with dual port
Broadcom BCM57414 NetXtreme-E 10Gb/25Gb.
o USRP Ettus N310
o 4x SFP+ FS transceiver at 850nm (SR)
o 2x LC/UPC-LC/UPC Duplex, Single mode Fiber patch cables
* Second setup:
o Dell Precision tower 3650 (Intel core i9) equipped with
dual port Intel X520-DA2 10Gb
o USRP Ettus N310
o 2x SFP+ FS transceiver at 850nm (SR)
o 2x Intel E10GSFPSR
o 2x LC/UPC-LC/UPC Duplex, Single mode Fiber patch cables
For the USRP, I considered UHD 4.2.0, 4.0.0 and 3.15.0. All of them
highlight an unstable connection (packet loss and flapping)
Do you have other hints?
Thank you
Federico
Same thing is happening on both setups? How long are your patch
cables?
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