From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 7C127A034F for ; Thu, 25 Feb 2021 19:47:37 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 4CB8F1608A4; Thu, 25 Feb 2021 19:47:37 +0100 (CET) Received: from mail-pj1-f45.google.com (mail-pj1-f45.google.com [209.85.216.45]) by mails.dpdk.org (Postfix) with ESMTP id 503D91608A3 for ; Thu, 25 Feb 2021 19:47:36 +0100 (CET) Received: by mail-pj1-f45.google.com with SMTP id l18so4098099pji.3 for ; Thu, 25 Feb 2021 10:47:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=iol.unh.edu; s=unh-iol; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=J04TUa4dfJITPV9zc0JJvRU09SKwceYlzTqYH5bIFgs=; b=b5mBUeVoOvIyBjtHGBpsZ2REB0SxLFeoOwDt/O4kYEFNM+uN4Qr2Rc/P/LiKpHXeaT oF1i4o/SarG/qzEcruOwQoJC0pYoiKTri2q7YQmbfLHCWrI5b28mbb9/KMsYIEEtGa+E a9wtBfGICe1uvXJCt3hCOs6xPVuyX9DDj0TnM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=J04TUa4dfJITPV9zc0JJvRU09SKwceYlzTqYH5bIFgs=; b=pxG903IcyQCmzjGP7yfMLJ6RU8lAl92e81wbrzUrgJROj7OSPhMWaZtQUmI7/Jt80N DVmuDilw8wOB4wJ6yymENSD5j3WkR/WeLLABjtlXljfbM2Z16Ia1YzCv4riasknfmhID Cs/SE6r8kVAaql/lrBy6U9Ri1/XiPHGrSu4JUqySWmWK2WjtyJgW1DUDT8YVsVPKy3A0 FL2sA2DmFvQqQMrrQTfJZg4cdm44jOyJhS6GU5nOjRWeV99H8khEix5SY+dDpYBs5DRW LjJnCtK9fdf9vfu3UO4OafEJZFRX4plauThaGouBG6+9yel1oT87JUzgF96r+ekirteW Z8eA== X-Gm-Message-State: AOAM531PgWdOo3ERMFutFFUdviHh9TAi8VujKf3jKfb7OLM1ZLQfYhvo Bf5LaA/Acu7TmO5D8ZRsvBHbFQL9LKMmLm3/Sn/oqg== X-Google-Smtp-Source: ABdhPJwluiXMCHJx8hnJSFZRkrQHVUf+Q+WrHb1UPK70JtNcMxQBIBIT41+r6+IfOeNJh3nQrfoAmOdPbp1Jeu1cj/A= X-Received: by 2002:a17:90a:6393:: with SMTP id f19mr4571397pjj.230.1614278855227; Thu, 25 Feb 2021 10:47:35 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: David Liu Date: Thu, 25 Feb 2021 13:46:59 -0500 Message-ID: To: Ajit Khaparde Cc: Owen Hilyard , ci@dpdk.org, dpdklab Content-Type: multipart/alternative; boundary="000000000000bc136d05bc2d95a1" Subject: Re: [dpdk-ci] [dpdklab] Re: [DPDKLAB] 25G Broadcom NIC in Arm hardware X-BeenThere: ci@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK CI discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: ci-bounces@dpdk.org Sender: "ci" --000000000000bc136d05bc2d95a1 Content-Type: text/plain; charset="UTF-8" Hi Ajit, Sorry for this issue. If possible I would like to set up a time where we can do this in a call to help get this solved faster. Please let me know what would be a good time for you. Best, David On Thu, Feb 25, 2021 at 12:55 PM David Liu wrote: > Hi Ajit, > > I changed the permission to allow you to run sudo. > This should work now. > Let me know if you still have issues. > > Best, > David > > On Mon, Feb 22, 2021 at 11:11 PM Ajit Khaparde > wrote: > >> David, >> I tried the option to use sudo. And that didn't work. >> >> Thanks >> Ajit >> >> ajitkhaparde is not allowed to run sudo on arm-gigabyte. This incident >> will be reported. >> >> ---- >> sudo su >> [sudo] password for ajitkhaparde: >> ajitkhaparde is not allowed to run sudo on arm-dell. This incident will >> be reported. >> ajitkhaparde@arm-dell:/opt/dts$ sudo ./dts -s >> [sudo] password for ajitkhaparde: >> ajitkhaparde is not allowed to run sudo on arm-dell. This incident will >> be reported. >> >> On Thu, Feb 18, 2021 at 10:03 AM Ajit Khaparde < >> ajit.khaparde@broadcom.com> wrote: >> >>> >>> >>> On Thu, Feb 18, 2021 at 10:01 AM David Liu wrote: >>> >>>> Hi Ajit, >>>> >>>> This is likely caused by when dts try to ssh into another machine as a >>>> normal user which will prompt you for the password. >>>> >>>> One solution would be "sudo su" as root to run the command line since >>>> you should have root access. >>>> >>> David, >>> Let me try this method first. >>> If it does not work, we could try with the public ssh keys. >>> I will let you know. >>> >>> Thanks >>> Ajit >>> >>>> >>>> Another solution would be to let me add your public ssh key into both >>>> machines. >>>> >>>> Let me know if this helps. >>>> >>>> Best, >>>> David >>>> >>>> On Fri, Feb 12, 2021 at 5:48 PM Ajit Khaparde < >>>> ajit.khaparde@broadcom.com> wrote: >>>> >>>>> Thanks Owen. >>>>> >>>>> When I run the dts command line suggested, I get the following error. >>>>> >>>>> Thanks >>>>> Ajit >>>>> >>>>> Traceback (most recent call last): >>>>> File "/opt/dts/framework/ssh_pexpect.py", line 60, in _connect_host >>>>> self.password, original_prompt='[$#>]', >>>>> password_regex=r'(?i)(?:password:)|(?:passphrase for key)|(?i)(password for >>>>> .+:)') >>>>> File "/usr/local/lib/python3.6/dist-packages/pexpect/pxssh.py", line >>>>> 440, in login >>>>> raise ExceptionPxssh('password refused') >>>>> pexpect.pxssh.ExceptionPxssh: password refused >>>>> ^^^^^^^^^^^^^^ >>>>> >>>>> >>>>> >>>>> On Fri, Feb 12, 2021 at 12:09 PM Owen Hilyard >>>>> wrote: >>>>> >>>>>> Hello Ajit, >>>>>> >>>>>> There was a misconfiguration in our identity management system. The >>>>>> issue should now be resolved. >>>>>> >>>>>> Owen Hilyard >>>>>> >>>>>> On Thu, Feb 11, 2021 at 9:38 PM 'Ajit Khaparde' via dpdklab < >>>>>> dpdklab@iol.unh.edu> wrote: >>>>>> >>>>>>> David, >>>>>>> I can use my credentials to login to rhea. >>>>>>> But the same credentials are not allowing me to login onto the >>>>>>> servers you provided. >>>>>>> >>>>>>> Thanks >>>>>>> Ajit >>>>>>> >>>>>>> ssh -l ajitkhaparde arm-gigabyte.dpdklab.iol.unh.edu >>>>>>> Connection closed by 172.18.0.41 port 22 >>>>>>> >>>>>>> ssh -l ajitkhaparde arm-dell.dpdklab.iol.unh.edu >>>>>>> Connection closed by 172.18.0.40 port 22 >>>>>>> >>>>>>> On Tue, Feb 9, 2021 at 6:36 AM David Liu wrote: >>>>>>> >>>>>>>> Hi Ajit, >>>>>>>> >>>>>>>> Thanks for the update. Let me know if you need anything from me. >>>>>>>> >>>>>>>> >>>>>>>> Best, >>>>>>>> David >>>>>>>> >>>>>>>> On Sun, Feb 7, 2021 at 11:04 PM Ajit Khaparde < >>>>>>>> ajit.khaparde@broadcom.com> wrote: >>>>>>>> >>>>>>>>> David, >>>>>>>>> I had some trouble with my system over the past week. >>>>>>>>> So I could not login into the setup. I am hoping that my system >>>>>>>>> will be restored early this week >>>>>>>>> I will login into the setup after that. >>>>>>>>> >>>>>>>>> Thanks >>>>>>>>> Ajit >>>>>>>>> >>>>>>>>> On Tue, Feb 2, 2021 at 10:57 AM Ajit Khaparde < >>>>>>>>> ajit.khaparde@broadcom.com> wrote: >>>>>>>>> >>>>>>>>>> Hi David, >>>>>>>>>> I actually did miss it. I will take a look. >>>>>>>>>> Thanks for the refresh mail. >>>>>>>>>> >>>>>>>>>> Thanks >>>>>>>>>> Ajit >>>>>>>>>> >>>>>>>>>> On Tue, Feb 2, 2021 at 8:58 AM David Liu >>>>>>>>>> wrote: >>>>>>>>>> > >>>>>>>>>> > Hi Ajit, >>>>>>>>>> > >>>>>>>>>> > Ping again in case if you miss the last email. >>>>>>>>>> > >>>>>>>>>> > Did you have a chance to give it a try on login to the machines? >>>>>>>>>> > >>>>>>>>>> > Just some notes, we are currently running compile and some >>>>>>>>>> performance/functional testing. >>>>>>>>>> > Which it may be hard for you to run dts, so please let me know >>>>>>>>>> if you want me to stop these tests for you to debug. >>>>>>>>>> > >>>>>>>>>> > Step I run: >>>>>>>>>> > CONF="conf_dpdk" ./switch.sh Broadcom #this is to switch the >>>>>>>>>> dts configuration to Broadcom >>>>>>>>>> > ./dts -s >>>>>>>>>> #To start the dts >>>>>>>>>> > >>>>>>>>>> > Informatio: >>>>>>>>>> > arm-dell.dpdklab.iol.unh.edu >>>>>>>>>> > - dts - located in /opt/dts >>>>>>>>>> > - Trex - located in /opt/trex/v2.87 >>>>>>>>>> > >>>>>>>>>> > arm-gigabyte.dpdklab.iol.unh.edu >>>>>>>>>> > - dpdk - located in /root/dpdk >>>>>>>>>> > >>>>>>>>>> > Best, >>>>>>>>>> > David >>>>>>>>>> > >>>>>>>>>> > On Tue, Jan 26, 2021 at 4:59 PM David Liu >>>>>>>>>> wrote: >>>>>>>>>> >> >>>>>>>>>> >> Also, I had changed the configuration when I run Broadcom nic. >>>>>>>>>> >> In the dts folder, you can start it with ./dts -s >>>>>>>>>> >> >>>>>>>>>> >> On Tue, Jan 26, 2021 at 4:54 PM David Liu >>>>>>>>>> wrote: >>>>>>>>>> >>> >>>>>>>>>> >>> Hi Ajit, >>>>>>>>>> >>> Sorry for the late reply. >>>>>>>>>> >>> >>>>>>>>>> >>> You can ssh into the machine using the same VPN Username and >>>>>>>>>> Password. >>>>>>>>>> >>> Can you try and see if that works? >>>>>>>>>> >>> >>>>>>>>>> >>> Informatio: >>>>>>>>>> >>> arm-dell.dpdklab.iol.unh.edu >>>>>>>>>> >>> - dts - located in /opt/dts >>>>>>>>>> >>> - Trex - located in /opt/trex/v2.87 >>>>>>>>>> >>> >>>>>>>>>> >>> arm-gigabyte.dpdklab.iol.unh.edu >>>>>>>>>> >>> - dpdk - located in /root/dpdk >>>>>>>>>> >>> >>>>>>>>>> >>> >>>>>>>>>> >>> Thanks, >>>>>>>>>> >>> David >>>>>>>>>> >>> >>>>>>>>>> >>> On Tue, Jan 19, 2021 at 5:20 PM Ajit Khaparde < >>>>>>>>>> ajit.khaparde@broadcom.com> wrote: >>>>>>>>>> >>>> >>>>>>>>>> >>>> Hi David, >>>>>>>>>> >>>> Thanks for pinging me. Do you think I could login into the >>>>>>>>>> setup and >>>>>>>>>> >>>> see what is happening? >>>>>>>>>> >>>> I do have the credentials for two systems in your lab - >>>>>>>>>> >>>> rhea.dpdklab.iol.unh.edu and io.dpdklab.iol.unh.edu >>>>>>>>>> >>>> If you can provide me details of the systems you are trying >>>>>>>>>> to >>>>>>>>>> >>>> configure, I could take a look. >>>>>>>>>> >>>> >>>>>>>>>> >>>> Thanks >>>>>>>>>> >>>> Ajit >>>>>>>>>> >>>> >>>>>>>>>> >>>> On Tue, Jan 19, 2021 at 1:41 PM David Liu >>>>>>>>>> wrote: >>>>>>>>>> >>>> > >>>>>>>>>> >>>> > Hi Ajit, >>>>>>>>>> >>>> > >>>>>>>>>> >>>> > Thank you for helping out. >>>>>>>>>> >>>> > >>>>>>>>>> >>>> > How are you doing with this issue? >>>>>>>>>> >>>> > >>>>>>>>>> >>>> > Please let me know if you need anything information from >>>>>>>>>> us. >>>>>>>>>> >>>> > >>>>>>>>>> >>>> > Just some extra information that both Trex and dts are on >>>>>>>>>> the same intel tester machine. >>>>>>>>>> >>>> > >>>>>>>>>> >>>> > Best, >>>>>>>>>> >>>> > David >>>>>>>>>> >>>> > >>>>>>>>>> >>>> > On Thu, Jan 14, 2021 at 2:12 PM David Liu < >>>>>>>>>> dliu@iol.unh.edu> wrote: >>>>>>>>>> >>>> >> >>>>>>>>>> >>>> >> Yes, so this is the same NIC work on x86. >>>>>>>>>> >>>> >> By seeing the link, I am assuming you mean the ports that >>>>>>>>>> are using for Trex. If so they are UP before I start the Trex. >>>>>>>>>> >>>> >> >>>>>>>>>> >>>> >> Thank, >>>>>>>>>> >>>> >> David >>>>>>>>>> >>>> >> >>>>>>>>>> >>>> >> >>>>>>>>>> >>>> >> On Thu, Jan 14, 2021 at 1:11 AM Ajit Khaparde < >>>>>>>>>> ajit.khaparde@broadcom.com> wrote: >>>>>>>>>> >>>> >>> >>>>>>>>>> >>>> >>> Does the same NIC work on x86? >>>>>>>>>> >>>> >>> Also do you see link before you start the trex? I am >>>>>>>>>> trying to see if the port failed to successfully come up >>>>>>>>>> >>>> >>> or if there is a problem with the link. Can you check >>>>>>>>>> and tell? >>>>>>>>>> >>>> >>> >>>>>>>>>> >>>> >>> Thanks >>>>>>>>>> >>>> >>> Ajit >>>>>>>>>> >>>> >>> >>>>>>>>>> >>>> >>> On Wed, Jan 13, 2021 at 4:20 PM David Liu < >>>>>>>>>> dliu@iol.unh.edu> wrote: >>>>>>>>>> >>>> >>>> >>>>>>>>>> >>>> >>>> Hi Ajit, >>>>>>>>>> >>>> >>>> >>>>>>>>>> >>>> >>>> Thank you for helping out. >>>>>>>>>> >>>> >>>> >>>>>>>>>> >>>> >>>> We have it working on the x86, but not the Arm. >>>>>>>>>> >>>> >>>> >>>>>>>>>> >>>> >>>> >>>>>>>>>> >>>> >>>> Thanks, >>>>>>>>>> >>>> >>>> David >>>>>>>>>> >>>> >>>> >>>>>>>>>> >>>> >>>> On Wed, Jan 13, 2021 at 5:34 PM Ajit Khaparde < >>>>>>>>>> ajit.khaparde@broadcom.com> wrote: >>>>>>>>>> >>>> >>>>> >>>>>>>>>> >>>> >>>>> Hi David, >>>>>>>>>> >>>> >>>>> I will take a look. >>>>>>>>>> >>>> >>>>> Do you see similar issues on x86? I am asking because >>>>>>>>>> >>>> >>>>> even I would start with that to create a baseline and >>>>>>>>>> then >>>>>>>>>> >>>> >>>>> attempt on ARM. >>>>>>>>>> >>>> >>>>> >>>>>>>>>> >>>> >>>>> Thanks >>>>>>>>>> >>>> >>>>> Ajit >>>>>>>>>> >>>> >>>>> >>>>>>>>>> >>>> >>>>> On Wed, Jan 13, 2021 at 12:08 PM David Liu < >>>>>>>>>> dliu@iol.unh.edu> wrote: >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>> Hi Ajit, >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>> We have a 25G Broadcom NIC that is installed on an >>>>>>>>>> Arm machine. >>>>>>>>>> >>>> >>>>>> And I am running into a problem when I try to run >>>>>>>>>> nic_single_core_perf on the NIC. >>>>>>>>>> >>>> >>>>>> Currently, we are using: Trex v2.86 and dts from >>>>>>>>>> http://git.dpdk.org/tools/dts/ >>>>>>>>>> >>>> >>>>>> All the NICs are up and running when testing. >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>> The problem is an error when I try to run the test >>>>>>>>>> case inside the nic_single_core_perf: >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>>> TestNicSingleCorePerf: Test running at parameters: >>>>>>>>>> framesize: 64, rxd/txd: 512 >>>>>>>>>> >>>> >>>>>>> dut.172.18.0.41: >>>>>>>>>> x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 32,33 -n 4 >>>>>>>>>> --file-prefix=dpdk_15311_20210113190237 -a 0000:93:00.0 -a 0000:93:00.1 >>>>>>>>>> -- -i --portmask=0x3 --txd=512 --rxd=512 --nb-cores=1 >>>>>>>>>> >>>> >>>>>>> dut.172.18.0.41: start >>>>>>>>>> >>>> >>>>>>> TestNicSingleCorePerf: Test Case >>>>>>>>>> test_perf_nic_single_core Result ERROR: Traceback (most recent call last): >>>>>>>>>> >>>> >>>>>>> File "/opt/dts/framework/test_case.py", line 319, >>>>>>>>>> in _execute_test_case >>>>>>>>>> >>>> >>>>>>> case_obj() >>>>>>>>>> >>>> >>>>>>> File "tests/TestSuite_nic_single_core_perf.py", >>>>>>>>>> line 196, in test_perf_nic_single_core >>>>>>>>>> >>>> >>>>>>> self.perf_test(self.nb_ports) >>>>>>>>>> >>>> >>>>>>> File "tests/TestSuite_nic_single_core_perf.py", >>>>>>>>>> line 270, in perf_test >>>>>>>>>> >>>> >>>>>>> _, packets_received = >>>>>>>>>> self.tester.pktgen.measure_throughput(stream_ids=streams, >>>>>>>>>> options=traffic_opt) >>>>>>>>>> >>>> >>>>>>> File "/opt/dts/framework/pktgen_base.py", line >>>>>>>>>> 245, in measure_throughput >>>>>>>>>> >>>> >>>>>>> self._prepare_transmission(stream_ids=stream_ids) >>>>>>>>>> >>>> >>>>>>> File "/opt/dts/framework/pktgen_trex.py", line >>>>>>>>>> 778, in _prepare_transmission >>>>>>>>>> >>>> >>>>>>> self._conn.reset(ports=self._ports) >>>>>>>>>> >>>> >>>>>>> File >>>>>>>>>> "/opt/trex/v2.86/automation/trex_control_plane/interactive/trex/common/trex_api_annotators.py", >>>>>>>>>> line 51, in wrap2 >>>>>>>>>> >>>> >>>>>>> ret = f(*args, **kwargs) >>>>>>>>>> >>>> >>>>>>> File >>>>>>>>>> "/opt/trex/v2.86/automation/trex_control_plane/interactive/trex/stl/trex_stl_client.py", >>>>>>>>>> line 339, in reset >>>>>>>>>> >>>> >>>>>>> self.clear_stats(ports) >>>>>>>>>> >>>> >>>>>>> File >>>>>>>>>> "/opt/trex/v2.86/automation/trex_control_plane/interactive/trex/common/trex_api_annotators.py", >>>>>>>>>> line 51, in wrap2 >>>>>>>>>> >>>> >>>>>>> ret = f(*args, **kwargs) >>>>>>>>>> >>>> >>>>>>> File >>>>>>>>>> "/opt/trex/v2.86/automation/trex_control_plane/interactive/trex/stl/trex_stl_client.py", >>>>>>>>>> line 1492, in clear_stats >>>>>>>>>> >>>> >>>>>>> self._clear_stats_common(ports, clear_global, >>>>>>>>>> clear_xstats) >>>>>>>>>> >>>> >>>>>>> File >>>>>>>>>> "/opt/trex/v2.86/automation/trex_control_plane/interactive/trex/common/trex_client.py", >>>>>>>>>> line 2876, in _clear_stats_common >>>>>>>>>> >>>> >>>>>>> raise TRexError(rc) >>>>>>>>>> >>>> >>>>>>> trex.common.trex_exceptions.TRexError: *** [RPC] - >>>>>>>>>> Failed to get server response from tcp://172.18.0.40:4501 >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>> I also try to run TRex in stateless mode >>>>>>>>>> with./t-rex-64 -i --cfg /etc/trex_cfg.yaml and connect with ./trex-console >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>> Then start sending traffic with command >>>>>>>>>> >>>> >>>>>>> >>>>>>>>>> >>>> >>>>>>> trex>start -f stl/imix.py >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>> But this will cause an error to turn off Trex. >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>>> trex> >>>>>>>>>> >>>> >>>>>>> 2021-01-13 19:56:21 - [server][warning] - Server >>>>>>>>>> has been shutdown - cause: 'WATCHDOG: task 'Trex DP core 1' has not >>>>>>>>>> responded for more than 1.00135 seconds - timeout is 1 seconds >>>>>>>>>> >>>> >>>>>>> *** traceback follows *** >>>>>>>>>> >>>> >>>>>>> 1 0x561be173cf5a ./_t-rex-64(+0x19af5a) >>>>>>>>>> [0x561be173cf5a] >>>>>>>>>> >>>> >>>>>>> 2 0x7feea3ac0980 >>>>>>>>>> /lib/x86_64-linux-gnu/libpthread.so.0(+0x12980) [0x7feea3ac0980] >>>>>>>>>> >>>> >>>>>>> 3 0x561be1a05a2a rte_delay_us_block + 106 >>>>>>>>>> >>>> >>>>>>> 4 0x561be16ce874 >>>>>>>>>> CCoreEthIF::send_burst(CCorePerPort*, unsigned short, >>>>>>>>>> CVirtualIFPerSideStats*) + 3220 >>>>>>>>>> >>>> >>>>>>> 5 0x561be16abf57 CCoreEthIF::flush_tx_queue() >>>>>>>>>> + 31 >>>>>>>>>> >>>> >>>>>>> 6 0x561be171e3d9 >>>>>>>>>> CNodeGenerator::handle_maintenance(CFlowGenListPerThread*) + 265 >>>>>>>>>> >>>> >>>>>>> 7 0x561be171f7ec >>>>>>>>>> CNodeGenerator::handle_flow_sync(CGenNode*, CFlowGenListPerThread*, bool&) >>>>>>>>>> + 92 >>>>>>>>>> >>>> >>>>>>> 8 0x561be171fc98 >>>>>>>>>> CNodeGenerator::handle_slow_messages(unsigned char, CGenNode*, >>>>>>>>>> CFlowGenListPerThread*, bool) + 184 >>>>>>>>>> >>>> >>>>>>> 9 0x561be16cb5f1 int >>>>>>>>>> CNodeGenerator::flush_file_realtime<23, false>(double, double, >>>>>>>>>> CFlowGenListPerThread*, double&) + 881 >>>>>>>>>> >>>> >>>>>>> 10 0x561be1905212 >>>>>>>>>> TrexStatelessDpCore::start_scheduler() + 226 >>>>>>>>>> >>>> >>>>>>> 11 0x561be1883ae9 TrexDpCore::start() + 89 >>>>>>>>>> >>>> >>>>>>> 12 0x561be1714113 >>>>>>>>>> CFlowGenListPerThread::start(std::__cxx11::basic_string>>>>>>>>> std::char_traits, std::allocator >&, CPreviewMode&) + 115 >>>>>>>>>> >>>> >>>>>>> 13 0x561be16af8dd >>>>>>>>>> CGlobalTRex::run_in_core(unsigned char) + 487 >>>>>>>>>> >>>> >>>>>>> 14 0x561be16d11ad ./_t-rex-64(+0x12f1ad) >>>>>>>>>> [0x561be16d11ad] >>>>>>>>>> >>>> >>>>>>> 15 0x561be1a1dfaa eal_thread_loop + 426 >>>>>>>>>> >>>> >>>>>>> 16 0x7feea3ab56db >>>>>>>>>> /lib/x86_64-linux-gnu/libpthread.so.0(+0x76db) [0x7feea3ab56db] >>>>>>>>>> >>>> >>>>>>> 17 0x7feea2a8571f clone + 63 >>>>>>>>>> >>>> >>>>>>> >>>>>>>>>> >>>> >>>>>>> *** addr2line information follows *** >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ??:0 >>>>>>>>>> >>>> >>>>>>> ' >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>> I believe if everything is working, this should not >>>>>>>>>> turn off trex but please correct me if I am wrong. >>>>>>>>>> >>>> >>>>>> I wonder if you have any suggestion of how I can >>>>>>>>>> approach this issue? >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>> Best, >>>>>>>>>> >>>> >>>>>> David >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>> >>>>>> >>>>>>>>>> >>>>>>>>> --000000000000bc136d05bc2d95a1 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Ajit,

Sorry for this issue.
If possible I would like to set up a time where we can do this in a call = to help get this solved faster.
Please let me know what would be = a good=C2=A0time for you.

Best,
David


On Thu, Feb 25, 2021 at 12:55 PM David Liu <dliu@iol.unh.edu> wrote:=
Hi Ajit,

I=C2=A0changed=C2=A0the permission to allow y= ou to run sudo.
This should work now.
Let me know if yo= u still have issues.

Best,
David

On= Mon, Feb 22, 2021 at 11:11 PM Ajit Khaparde <ajit.khaparde@broadcom.com> wr= ote:
= David,
I tried the option to use sudo. And that didn't work.

Thanks
Aj= it

ajitkhaparde is not allowed to run sudo on arm-gigabyte.=C2=A0 This i= ncident will be reported.

----
sudo su
[sudo] password for ajitk= haparde:
ajitkhaparde is not allowed to run sudo on arm-dell.=C2=A0 Thi= s incident will be reported.
ajitkhaparde@arm-dell:/opt/dts$ sudo ./dts = -s
[sudo] password for ajitkhaparde:
ajitkhaparde is not allowed to = run sudo on arm-dell.=C2=A0 This incident will be reported.
=
On Thu= , Feb 18, 2021 at 10:03 AM Ajit Khaparde <ajit.khaparde@broadcom.com> wrote:=


On Thu, Feb 18, 2021 at 10:01 AM David Liu <dliu@iol.unh.edu> w= rote:
Hi=C2=A0Ajit,

This is likely caused by when dts= try to=C2=A0ssh into another machine as a nor= mal user which will prompt you for the password.

One solution would be "sudo su" as root to run the comm= and line since you should have root access.
=
= David,
Let me try this method first.
If it does not= work, we could try with the public ssh keys.
I will let you k= now.

Thanks
Ajit=C2=A0
<= span style=3D"background-color:rgb(248,249,250);color:rgb(32,33,36);font-fa= mily:Roboto,sans-serif;font-size:14px;white-space:pre-wrap">
Another= solution would be to let me add your public ssh key into both machines.


Best,
David
<= br>
On Fri,= Feb 12, 2021 at 5:48 PM Ajit Khaparde <ajit.khaparde@broadcom.com> wrote:
=
Thanks=C2=A0Owen.

When I run the dts command line suggested, I get the foll= owing error.

Thanks
Ajit

Traceback (most= recent call last):
=C2=A0 File "/opt/dts/framework/ssh_pexpect.py&= quot;, line 60, in _connect_host
=C2=A0 =C2=A0 self.password, original_p= rompt=3D'[$#>]', password_regex=3Dr'(?i)(?:password:)|(?:pas= sphrase for key)|(?i)(password for .+:)')
=C2=A0 File "/usr/loc= al/lib/python3.6/dist-packages/pexpect/pxssh.py", line 440, in login=C2=A0 =C2=A0 raise ExceptionPxssh('password refused')
pexpect= .pxssh.ExceptionPxssh: password refused
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0^^^^^^^^^^^^^^



On = Fri, Feb 12, 2021 at 12:09 PM Owen Hilyard <ohilyard@iol.unh.edu> wrote:
=
Hello Aj= it,

There was a misconfiguration in our identity managem= ent system. The issue should now=C2=A0be resolved.=C2=A0

Owen Hilyard

On Thu, Feb 11, 2021 at 9:38 PM 'Ajit Khaparde= ' via dpdklab <dpdklab@iol.unh.edu> wrote:
David,
I can us= e my credentials to login to rhea.
But the same credentials are not allowing me to login onto the se= rvers you provided.

<= /div>
Thanks
Ajit

ssh -l a= jitkhaparde arm-gigabyte.dpdklab.iol.unh.edu
Connection closed by 172.18.= 0.41 port 22

ssh -l ajitkhaparde arm-dell.dpdklab= .iol.unh.edu
Connection closed by 172.18.0.40 port 22

On Tu= e, Feb 9, 2021 at 6:36 AM David Liu <dliu@iol.unh.edu> wrote:
Hi=C2=A0Ajit,

<= /div>
Thanks for the update. Let me know if you need anything from me.<= /div>


Best,
David
On Sun, = Feb 7, 2021 at 11:04 PM Ajit Khaparde <ajit.khaparde@broadcom.com> wrote:
<= div style=3D"font-family:tahoma,sans-serif">David,
I had some trouble with my system over the past w= eek.
So I could not login= into the setup. I am hoping that my system will be restored early this wee= k
I will login into the s= etup after that.

Thanks
Ajit

On Tue, Feb 2, 2021 at 10:57 AM Ajit= Khaparde <ajit.khaparde@broadcom.com> wrote:
Hi David,
I actually did miss it. I will take a look.
Thanks for the refresh mail.

Thanks
Ajit

On Tue, Feb 2, 2021 at 8:58 AM David Liu <dliu@iol.unh.edu> wrote:
>
> Hi Ajit,
>
> Ping again in case if you miss the last email.
>
> Did you have a chance to give it a try on login to the machines?
>
> Just some notes, we are currently running compile and some performance= /functional testing.
> Which it may be hard for you to run dts, so please let me know if you = want me to stop these tests for you to debug.
>
> Step I run:
> CONF=3D"conf_dpdk" ./switch.sh Broadcom=C2=A0 =C2=A0#this is= to switch the dts configuration to Broadcom
> ./dts -s=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0#T= o start the dts
>
> Informatio:
> arm-dell.dpdklab.iol.unh.edu
> - dts - located in /opt/dts
> - Trex - located in /opt/trex/v2.87
>
> arm-gigabyte.dpdklab.iol.unh.edu
> - dpdk - located in /root/dpdk
>
> Best,
> David
>
> On Tue, Jan 26, 2021 at 4:59 PM David Liu <dliu@iol.unh.edu> wrote:
>>
>> Also, I had changed the configuration when I run Broadcom nic.
>> In the dts folder, you can start it with ./dts -s
>>
>> On Tue, Jan 26, 2021 at 4:54 PM David Liu <dliu@iol.unh.edu> wrote:
>>>
>>> Hi Ajit,
>>> Sorry for the late reply.
>>>
>>> You can ssh into the machine using the same VPN Username and P= assword.
>>> Can you try and see if that works?
>>>
>>> Informatio:
>>> arm-dell.dpdklab.iol.unh.edu
>>> - dts - located in /opt/dts
>>> - Trex - located in /opt/trex/v2.87
>>>
>>> arm-gigabyte.dpdklab.iol.unh.edu
>>> - dpdk - located in /root/dpdk
>>>
>>>
>>> Thanks,
>>> David
>>>
>>> On Tue, Jan 19, 2021 at 5:20 PM Ajit Khaparde <ajit.khaparde@broadcom.= com> wrote:
>>>>
>>>> Hi David,
>>>> Thanks for pinging me. Do you think I could login into the= setup and
>>>> see what is happening?
>>>> I do have the credentials for two systems in your lab - >>>> rhea.dpdklab.iol.unh.edu and io.dpdklab.iol.= unh.edu
>>>> If you can provide me details of the systems you are tryin= g to
>>>> configure, I could take a look.
>>>>
>>>> Thanks
>>>> Ajit
>>>>
>>>> On Tue, Jan 19, 2021 at 1:41 PM David Liu <dliu@iol.unh.edu> wrote: >>>> >
>>>> > Hi Ajit,
>>>> >
>>>> > Thank you for helping out.
>>>> >
>>>> > How are you doing with this issue?
>>>> >
>>>> > Please let me know if you need anything information f= rom us.
>>>> >
>>>> > Just some extra information that both Trex and dts ar= e on the same intel tester machine.
>>>> >
>>>> > Best,
>>>> > David
>>>> >
>>>> > On Thu, Jan 14, 2021 at 2:12 PM David Liu <dliu@iol.unh.edu> wro= te:
>>>> >>
>>>> >> Yes, so this is the same NIC work on x86.
>>>> >> By seeing the link, I am assuming you mean the po= rts that are using for Trex. If so they are UP before I start the Trex.
>>>> >>
>>>> >> Thank,
>>>> >> David
>>>> >>
>>>> >>
>>>> >> On Thu, Jan 14, 2021 at 1:11 AM Ajit Khaparde <= ;ajit.khapa= rde@broadcom.com> wrote:
>>>> >>>
>>>> >>> Does the same NIC work on x86?
>>>> >>> Also do you see link before you start the tre= x? I am trying to see if the port failed to successfully come up
>>>> >>> or if there is a problem with the link. Can y= ou check and tell?
>>>> >>>
>>>> >>> Thanks
>>>> >>> Ajit
>>>> >>>
>>>> >>> On Wed, Jan 13, 2021 at 4:20 PM David Liu <= ;dliu@iol.unh.edu= > wrote:
>>>> >>>>
>>>> >>>> Hi Ajit,
>>>> >>>>
>>>> >>>> Thank you for helping out.
>>>> >>>>
>>>> >>>> We have it working on the x86, but not th= e Arm.
>>>> >>>>
>>>> >>>>
>>>> >>>> Thanks,
>>>> >>>> David
>>>> >>>>
>>>> >>>> On Wed, Jan 13, 2021 at 5:34 PM Ajit Khap= arde <aj= it.khaparde@broadcom.com> wrote:
>>>> >>>>>
>>>> >>>>> Hi David,
>>>> >>>>> I will take a look.
>>>> >>>>> Do you see similar issues on x86? I a= m asking because
>>>> >>>>> even I would start with that to creat= e a baseline and then
>>>> >>>>> attempt on ARM.
>>>> >>>>>
>>>> >>>>> Thanks
>>>> >>>>> Ajit
>>>> >>>>>
>>>> >>>>> On Wed, Jan 13, 2021 at 12:08 PM Davi= d Liu <dliu@iol.un= h.edu> wrote:
>>>> >>>>>>
>>>> >>>>>> Hi Ajit,
>>>> >>>>>>
>>>> >>>>>> We have a 25G Broadcom NIC that i= s installed on an Arm machine.
>>>> >>>>>> And I am running into a problem w= hen I try to run nic_single_core_perf on the NIC.
>>>> >>>>>> Currently, we are using: Trex v2.= 86 and dts from http://git.dpdk.org/tools/dts/
>>>> >>>>>> All the NICs are up and running w= hen testing.
>>>> >>>>>>
>>>> >>>>>> The problem is an error when I tr= y to run the test case inside the nic_single_core_perf:
>>>> >>>>>>
>>>> >>>>>>> TestNicSingleCorePerf: Test r= unning at parameters: framesize: 64, rxd/txd: 512
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 dut.172.18.0.41: x86_64-native-linuxapp-gcc/app= /dpdk-testpmd -l 32,33 -n 4=C2=A0 --file-prefix=3Ddpdk_15311_20210113190237= =C2=A0 =C2=A0-a 0000:93:00.0 -a 0000:93:00.1 -- -i --portmask=3D0x3 --txd= =3D512 --rxd=3D512 --nb-cores=3D1
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 dut.172.18.0.41: start
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 TestNicSingleCorePerf: Test Case test_perf_nic_single_core Result ER= ROR: Traceback (most recent call last):
>>>> >>>>>>>=C2=A0 =C2=A0File "/opt/d= ts/framework/test_case.py", line 319, in _execute_test_case
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0case_obj()=
>>>> >>>>>>>=C2=A0 =C2=A0File "tests/= TestSuite_nic_single_core_perf.py", line 196, in test_perf_nic_single_= core
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0self.perf_= test(self.nb_ports)
>>>> >>>>>>>=C2=A0 =C2=A0File "tests/= TestSuite_nic_single_core_perf.py", line 270, in perf_test
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0_, packets= _received =3D self.tester.pktgen.measure_throughput(stream_ids=3Dstreams, o= ptions=3Dtraffic_opt)
>>>> >>>>>>>=C2=A0 =C2=A0File "/opt/d= ts/framework/pktgen_base.py", line 245, in measure_throughput
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0self._prep= are_transmission(stream_ids=3Dstream_ids)
>>>> >>>>>>>=C2=A0 =C2=A0File "/opt/d= ts/framework/pktgen_trex.py", line 778, in _prepare_transmission
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0self._conn= .reset(ports=3Dself._ports)
>>>> >>>>>>>=C2=A0 =C2=A0File "/opt/t= rex/v2.86/automation/trex_control_plane/interactive/trex/common/trex_api_an= notators.py", line 51, in wrap2
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0ret =3D f(= *args, **kwargs)
>>>> >>>>>>>=C2=A0 =C2=A0File "/opt/t= rex/v2.86/automation/trex_control_plane/interactive/trex/stl/trex_stl_clien= t.py", line 339, in reset
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0self.clear= _stats(ports)
>>>> >>>>>>>=C2=A0 =C2=A0File "/opt/t= rex/v2.86/automation/trex_control_plane/interactive/trex/common/trex_api_an= notators.py", line 51, in wrap2
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0ret =3D f(= *args, **kwargs)
>>>> >>>>>>>=C2=A0 =C2=A0File "/opt/t= rex/v2.86/automation/trex_control_plane/interactive/trex/stl/trex_stl_clien= t.py", line 1492, in clear_stats
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0self._clea= r_stats_common(ports, clear_global, clear_xstats)
>>>> >>>>>>>=C2=A0 =C2=A0File "/opt/t= rex/v2.86/automation/trex_control_plane/interactive/trex/common/trex_client= .py", line 2876, in _clear_stats_common
>>>> >>>>>>>=C2=A0 =C2=A0 =C2=A0raise TRex= Error(rc)
>>>> >>>>>>> trex.common.trex_exceptions.T= RexError: *** [RPC] - Failed to get server response from tcp://172.18.0.40:45= 01
>>>> >>>>>>
>>>> >>>>>>
>>>> >>>>>> I also try to run TRex in statele= ss mode with./t-rex-64 -i --cfg /etc/trex_cfg.yaml and=C2=A0 connect with .= /trex-console
>>>> >>>>>>
>>>> >>>>>> Then start sending traffic with c= ommand
>>>> >>>>>>>
>>>> >>>>>>> trex>start -f stl/imix.py<= br> >>>> >>>>>>
>>>> >>>>>>
>>>> >>>>>> But this will cause an error to t= urn off Trex.
>>>> >>>>>>
>>>> >>>>>>> trex>
>>>> >>>>>>> 2021-01-13 19:56:21 - [server= ][warning]=C2=A0 - Server has been shutdown - cause: 'WATCHDOG: task &#= 39;Trex DP core 1' has not responded for more than 1.00135 seconds - ti= meout is 1 seconds
>>>> >>>>>>> *** traceback follows ***
>>>> >>>>>>> 1=C2=A0 =C2=A0 =C2=A0 =C2=A00= x561be173cf5a ./_t-rex-64(+0x19af5a) [0x561be173cf5a]
>>>> >>>>>>> 2=C2=A0 =C2=A0 =C2=A0 =C2=A00= x7feea3ac0980 /lib/x86_64-linux-gnu/libpthread.so.0(+0x12980) [0x7feea3ac09= 80]
>>>> >>>>>>> 3=C2=A0 =C2=A0 =C2=A0 =C2=A00= x561be1a05a2a rte_delay_us_block + 106
>>>> >>>>>>> 4=C2=A0 =C2=A0 =C2=A0 =C2=A00= x561be16ce874 CCoreEthIF::send_burst(CCorePerPort*, unsigned short, CVirtua= lIFPerSideStats*) + 3220
>>>> >>>>>>> 5=C2=A0 =C2=A0 =C2=A0 =C2=A00= x561be16abf57 CCoreEthIF::flush_tx_queue() + 31
>>>> >>>>>>> 6=C2=A0 =C2=A0 =C2=A0 =C2=A00= x561be171e3d9 CNodeGenerator::handle_maintenance(CFlowGenListPerThread*) + = 265
>>>> >>>>>>> 7=C2=A0 =C2=A0 =C2=A0 =C2=A00= x561be171f7ec CNodeGenerator::handle_flow_sync(CGenNode*, CFlowGenListPerTh= read*, bool&) + 92
>>>> >>>>>>> 8=C2=A0 =C2=A0 =C2=A0 =C2=A00= x561be171fc98 CNodeGenerator::handle_slow_messages(unsigned char, CGenNode*= , CFlowGenListPerThread*, bool) + 184
>>>> >>>>>>> 9=C2=A0 =C2=A0 =C2=A0 =C2=A00= x561be16cb5f1 int CNodeGenerator::flush_file_realtime<23, false>(doub= le, double, CFlowGenListPerThread*, double&) + 881
>>>> >>>>>>> 10=C2=A0 =C2=A0 =C2=A0 0x561b= e1905212 TrexStatelessDpCore::start_scheduler() + 226
>>>> >>>>>>> 11=C2=A0 =C2=A0 =C2=A0 0x561b= e1883ae9 TrexDpCore::start() + 89
>>>> >>>>>>> 12=C2=A0 =C2=A0 =C2=A0 0x561b= e1714113 CFlowGenListPerThread::start(std::__cxx11::basic_string<char, s= td::char_traits<char>, std::allocator<char> >&, CPreview= Mode&) + 115
>>>> >>>>>>> 13=C2=A0 =C2=A0 =C2=A0 0x561b= e16af8dd CGlobalTRex::run_in_core(unsigned char) + 487
>>>> >>>>>>> 14=C2=A0 =C2=A0 =C2=A0 0x561b= e16d11ad ./_t-rex-64(+0x12f1ad) [0x561be16d11ad]
>>>> >>>>>>> 15=C2=A0 =C2=A0 =C2=A0 0x561b= e1a1dfaa eal_thread_loop + 426
>>>> >>>>>>> 16=C2=A0 =C2=A0 =C2=A0 0x7fee= a3ab56db /lib/x86_64-linux-gnu/libpthread.so.0(+0x76db) [0x7feea3ab56db] >>>> >>>>>>> 17=C2=A0 =C2=A0 =C2=A0 0x7fee= a2a8571f clone + 63
>>>> >>>>>>>
>>>> >>>>>>> *** addr2line information fol= lows ***
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> ??:0
>>>> >>>>>>> '
>>>> >>>>>>
>>>> >>>>>>
>>>> >>>>>> I believe if everything is workin= g, this should not turn off trex but please correct me if I am wrong.
>>>> >>>>>> I wonder if you have any suggesti= on of how I can approach this issue?
>>>> >>>>>>
>>>> >>>>>> Best,
>>>> >>>>>> David
>>>> >>>>>>
>>>> >>>>>>
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