Test int64x64 fails?

[Petri Väisänen]

Hi,

I'm installing the ns-3.30 within the windows subsystem for linux at windows 10 and when running the tests (% ./test.py) one fail is generated:

631 of 635 tests passed (631 passed, 3 skipped, 1 failed, 0 crashed, 0 valgrind errors)
List of SKIPped tests:
    ns3-tcp-cwnd (requires NSC)
    ns3-tcp-interoperability (requires NSC)
    nsc-tcp-loss (requires NSC)
List of FAILed tests:
    int64x64

Ubuntu App is version 18.04. Is this something one needs to be concerned or can this fail be ignored?

Br,

Petri

[Manoj Paul]

I am using 14.04 and ns3.27 is working fine. Issue must be some where else. Did you built it ./build.py ?

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[Petri Väisänen]

Hi,

Yes, build with "% ./build.py --enable-examples --enable-tests" command.

Br,

Petri

Other setup:

   61  sudo apt-get install gcc g++ python python3 python3-dev
   63  sudo apt-get install python3-setuptools git mercurial
   64  sudo apt-get install gdb valgrind
   65  sudo apt-get install tcpdump
   66  sudo apt-get install sqlite sqlite3 libsqlite3-dev
   67  sudo apt-get install libxml2 libxml2-dev
   68  sudo apt-get install autoconf cvs bzr unrar

   86  git clone https://gitlab.com/nsnam/ns-3-allinone.git

On Friday, February 7, 2020 at 7:07:19 PM UTC+2, Manoj Paul wrote:

I am using 14.04 and ns3.27 is working fine. Issue must be some where else. Did you built it ./build.py ?

On Fri, Feb 7, 2020, 6:26 PM Petri Väisänen <petri.j...@gmail.com> wrote:

Hi,

I'm installing the ns-3.30 within the windows subsystem for linux at windows 10 and when running the tests (% ./test.py) one fail is generated:

631 of 635 tests passed (631 passed, 3 skipped, 1 failed, 0 crashed, 0 valgrind errors)
List of SKIPped tests:
    ns3-tcp-cwnd (requires NSC)
    ns3-tcp-interoperability (requires NSC)
    nsc-tcp-loss (requires NSC)
List of FAILed tests:
    int64x64

Ubuntu App is version 18.04. Is this something one needs to be concerned or can this fail be ignored?

Br,

Petri

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[Jing Yang]

Hi Petri,

How did you solve this problem? I have the same error when I was testing. 

I installed ns-3.30 within the subsystem for Linux at widows 10, and the ubutun app is 16.04.

Thank you.

Best,

Jing

[Gabriel Ferreira]

I've hit the same issues and those are due to rounding errors in WSLv1.
They use the wrong configuration of the floating point unit and refuse to fix it not to cause issues to Windows processes and to keep things fast.

WSLv2 fixes the issues, but it also is way slower for CPU intensive applications, so you got to choose your poison.

https://github.com/microsoft/WSL/issues/830