[ndnSIM] [EXT] A question about ndn examples testing

[Jonas]

I have this too
>
Hi,

Just met another problem when using “./waf xxxx —vis” command. It indeed gave me output showing the network topology. But I still get the errors below. I’m sure kiwi is installed successfully.

caster at ubuntu:~/ndnSim/ns-3$ ./waf --run ndn-first --vis
Waf: Entering directory `/home/caster/ndnSim/ns-3/build'
Waf: Leaving directory `/home/caster/ndnSim/ns-3/build'
Build commands will be stored in build/compile_commands.json
'build' finished successfully (1.725s)
Could not load plugin 'show_last_packets.py': No module named 'kiwi.ui'
Could not load icon applets-screenshooter due to missing gnomedesktop Python module
scanning topology: 3 nodes...
scanning topology: calling graphviz layout
scanning topology: all done.

Cheers,
Caster

2024年3月22日 下午3:48，Sirapop Theeranantachai <sirapop741 at gmail.com> 写道：

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*internal module.

If renaming doesn't work, please let us know. You may take a look at how I modify a waf script here as an example:
https://github.com/markverick/ndn-hypatia/blob/b253270e653aebc88bcf21c249877c446c000e25/wscript#L1036


On Fri, Mar 22, 2024, 12:41 AM Sirapop Theeranantachai <sirapop741 at gmail.com<mailto:sirapop741 at gmail.com>> wrote:
Hi Yitong,

Let me explain briefly about what is happening during the installation. ndnSIM is an external module for ns-3. When you run the installation script, it pulls a patched version of ns-3, and then place the actual ndnSIM module inside ns-3 as /src/ndnSIM.

When you want to run something, you would want to run it in ns-3 (not in the src folder). Normally, you wouldn't need to modify the wscript file if you place your codes in the /scratch folder. According to the root wscript (https://github.com/named-data-ndnSIM/ns-3-dev/blob/1b3bab9b6dba5f1e616c0b286eb889e9ce3d5d59/wscript#L1034), it will add files with extension ".cc".

If your code does not end with .cc, you should rename it. If your code base is not a single file, you need create a folder inside /scratch to add your program as a folder. If nothing works, let me know or try tinkering with wscript. It's written in Python.

Good luck!
Mark

On Fri, Mar 22, 2024, 12:06 AM 李怿曈 Yitong LI <yitongli at hkust-gz.edu.cn<mailto:yitongli at hkust-gz.edu.cn>> wrote:
Hi Mark,

Thanks. But how to modify the “wscript” file, I haven’t found any demo for that.

Cheers,
Caster

2024年3月22日 下午12:26，Sirapop Theeranantachai <sirapop741 at gmail.com<mailto:sirapop741 at gmail.com>> 写道：

你通常不会收到来自 sirapop741 at gmail.com<mailto:sirapop741 at gmail.com> 的电子邮件。了解这一点为什么很重要<https://aka.ms/LearnAboutSenderIdentification>
Hi Yitong,

You need to add an entry to the "wscript" file in the same directory you run ./waf. You can modify the script to make it either run on "/scratch" or "/examples".

Best,
Mark


On Thu, Mar 21, 2024 at 8:14 PM 李怿曈 Yitong LI via ndnSIM <ndnsim at lists.cs.ucla.edu<mailto:ndnsim at lists.cs.ucla.edu>> wrote:
Hi Junxiao,

I’m confused about which directory should I store my .cpp in order to run it. I’ve tried putting them into "/scratch” and “/src/ndnSIM/examples”, my program is named “non-first.cpp”. Then I use "./waf --run ndn-first” to run it. An error shows that “program ’non-first’ not found;”

Cheers,
Caster

2024年3月21日 下午5:00，Junxiao Shi <shijunxiao at arizona.edu<mailto:shijunxiao at arizona.edu>> 写道：

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Hi Yitong

Try installing this package:
sudo apt install python-is-python3

Yours, Junxiao

On Thu, Mar 21, 2024, 03:41 李怿曈 Yitong LI <yitongli at hkust-gz.edu.cn<mailto:yitongli at hkust-gz.edu.cn>> wrote:

External Email

Hi,

I’ve installed ndn successfully using “./waf configure --disable-python --enable-examples” suggested in the documentation. When I tried running example using “./waf —run=ndn-simple”, it gave an error. It says “/usr/bin/env: ‘python’: No such file or directory”. I’ve exported the environment variable before.

Thanks,
Caster
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