ifconfig on Termux
dummy0: flags=195<UP,BROADCAST,RUNNING,NOARP> mtu 1500
inet6 fe80::488e:42ff:fe43:b843 prefixlen 64 scopeid 0x20<link>
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen
0 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3 bytes 210 (210.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen
0 (UNSPEC)
RX packets 12 bytes 1285 (1.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 12 bytes 1285 (1.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
p2p0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen
1000 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
rmnet_data0: flags=65<UP,RUNNING> mtu 1500
inet 10.132.157.153 netmask 255.255.255.252
inet6 fe80::fbbc:50e0:b07d:6380 prefixlen 64 scopeid 0x20<link>
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen
1000 (UNSPEC)
RX packets 3041 bytes 1828676 (1.7 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3079 bytes 794069 (775.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
rmnet_data7: flags=65<UP,RUNNING> mtu 2000
inet6 fe80::e516:d4c5:e5f7:e54e prefixlen 64 scopeid 0x20<link>
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen
1000 (UNSPEC)
RX packets 8 bytes 620 (620.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 10 bytes 752 (752.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
rmnet_ipa0: flags=65<UP,RUNNING> mtu 2000
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen
1000 (UNSPEC)
RX packets 1926 bytes 1865884 (1.7 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3089 bytes 794821 (776.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlan0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen
1000 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ipaddr on Termux:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group
default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: dummy0: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UNKNOWN group default
link/ether 4a:8e:42:43:b8:43 brd ff:ff:ff:ff:ff:ff
inet6 fe80::488e:42ff:fe43:b843/64 scope link
valid_lft forever preferred_lft forever
3: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default
link/sit 0.0.0.0 brd 0.0.0.0
4: rmnet_ipa0: <UP,LOWER_UP> mtu 2000 qdisc pfifo_fast state UNKNOWN group
default qlen 1000
link/[530]
5: rmnet_data0: <UP,LOWER_UP> mtu 1500 qdisc htb state UNKNOWN group
default qlen 1000
link/[530]
inet 10.132.157.153/30 scope global rmnet_data0
valid_lft forever preferred_lft forever
inet6 fe80::fbbc:50e0:b07d:6380/64 scope link
valid_lft forever preferred_lft forever
6: rmnet_data1: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
7: rmnet_data2: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
8: rmnet_data3: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
9: rmnet_data4: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
10: rmnet_data5: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
11: rmnet_data6: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
12: rmnet_data7: <UP,LOWER_UP> mtu 2000 qdisc htb state UNKNOWN group
default qlen 1000
link/[530]
inet6 fe80::e516:d4c5:e5f7:e54e/64 scope link
valid_lft forever preferred_lft forever
13: r_rmnet_data0: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
14: r_rmnet_data1: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
15: r_rmnet_data2: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
16: r_rmnet_data3: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
17: r_rmnet_data4: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
18: r_rmnet_data5: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
19: r_rmnet_data6: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
20: r_rmnet_data7: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
21: r_rmnet_data8: <> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/[530]
22: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN
group default qlen 1000
link/ether 04:d1:3a:07:70:4b brd ff:ff:ff:ff:ff:ff
23: p2p0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN
group default qlen 1000
link/ether 06:d1:3a:07:70:4b brd ff:ff:ff:ff:ff:ff
The above is the output of ifconfig and ip addr on Termux. OpenMPI works as
expected on a single node, which is what I desire.
I'm sure I can get OpenMPI to work on a PC or laptop running Windows or
Linux.
That's not my question, however.
On Thu, 25 Feb 2021, 23:49 Jeff Squyres (jsquyres), <jsquy...@cisco.com>
wrote:
> You asked several questions:
>
> > But I'm able to get Apache working on a different port 8080. Is that
> useful?
>
> That's fine, but Apache has different requirements than Open MPI.
>
> > Do you think executing mpirun as a normal user will work?
>
> If it didn't work as root, it most likely won't work as a normal user.
>
> > Yes, it's self-learning.
> > I have no applications to run.
>
> Do you have any other MacOS / Linux environment in which to run Open MPI?
> That might end up being simpler.
>
> > I'd imagine the builders of Arch Linux on Termux would want to know why
> OpenMPI is not functioning as expected.
>
> Possibly. Open MPI needs the MAC address of Linux interfaces; that
> doesn't seem to be working in Arch Linux on Termux.
>
>
>
> On Feb 25, 2021, at 12:32 PM, LINUS FERNANDES <linus.fernan...@gmail.com>
> wrote:
>
> I'd imagine the builders of Arch Linux on Termux would want to know why
> OpenMPI is not functioning as expected.
>
> On Thu, 25 Feb 2021, 20:17 Jeff Squyres (jsquyres), <jsquy...@cisco.com>
> wrote:
>
>> I don't know how many people on this list will be familiar with Termux or
>> Arch Linux. From a quick Google, it looks like Termux is an Android
>> emulator (that runs on Android? That doesn't make sense to me, but I'm
>> wholly unfamiliar with that ecosystem, so I don't have the background /
>> grok the context) and provides some kind of Linux environment. And on top
>> of that, you're installing Arch Linux. Is that correct?
>>
>> If that's anywhere close to correct, it sounds like there could be
>> multiple layers of virtualization there, and that could lead to wonkiness
>> in the emulation of the IP stack.
>>
>> I do note that the only interface it looks like Open MPI could use is
>> rmnet_data0, but that's in an UNKNOWN state:
>>
>> 5: rmnet_data0: <UP,LOWER_UP> mtu 1500 qdisc htb state UNKNOWN group
>> default qlen 1000
>> link/[530]
>> inet 10.140.58.138/30 scope global rmnet_data0
>> valid_lft forever preferred_lft forever
>> inet6 fe80::93a5:ad99:4660:adc4/64 scope link
>> valid_lft forever preferred_lft forever
>>
>> Errno==13 is EACCESS, which generically translates to "permission
>> denied". Since you're running as root, this suggests that something
>> outside of your local environment (e.g., outside of that immediate layer of
>> virtualization) is preventing Open MPI from making that
>> ioctl(SIOCGIFHWADDR) call (all that call is trying to do is discover the
>> MAC address of that interface).
>>
>> Indeed, it looks like rmnet_data0 somehow doesn't have a MAC address...?
>>
>> rmnet_data0: flags=65<UP,RUNNING> mtu 1500
>> inet 10.140.58.138 netmask 255.255.255.252
>> inet6 fe80::93a5:ad99:4660:adc4 prefixlen 64 scopeid 0x20<link>
>> unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen
>> 1000 (UNSPEC)
>> RX packets 416796 bytes 376287723 (358.8 MiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 318293 bytes 69933666 (66.6 MiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> That's... weird. I don't know the details of this network stack; it's
>> somewhat outside the bounds of "normal" IP-based networking if there's no
>> MAC address. As such, it doesn't surprise me that -- given that one of
>> Open MPI's core assumptions fails -- Open MPI fails / refuses to run.
>>
>> I don't know if anyone has tried to run Open MPI in such a virtualized
>> environment before.
>>
>>
>>
>>
>> On Feb 25, 2021, at 6:04 AM, LINUS FERNANDES via users <
>> users@lists.open-mpi.org> wrote:
>>
>> So the OpenMPI version on Arch Linux can't be made operational?
>>
>> On Thu, 25 Feb 2021, 15:43 LINUS FERNANDES, <linus.fernan...@gmail.com>
>> wrote:
>>
>>> Nope. None of the commands exist. So no, I'd say.
>>>
>>> On Thu, 25 Feb 2021, 15:11 Gilles Gouaillardet via users, <
>>> users@lists.open-mpi.org> wrote:
>>>
>>>>
>>>> https://www.letmegooglethat.com/?q=how+to+check+if+selinux+is+enabled&l=1
>>>>
>>>> On Thu, Feb 25, 2021 at 6:15 PM LINUS FERNANDES via users
>>>> <users@lists.open-mpi.org> wrote:
>>>> >
>>>> > How do I know that? I'm not a Linux expert. I simply want to get
>>>> OpenMPI running on Arch Linux so that I can test out their Java wrappers
>>>> which I obviously can't on Termux since it doesn't support OpenJDK.
>>>> >
>>>> > On Thu, 25 Feb 2021, 13:37 Gilles Gouaillardet via users, <
>>>> users@lists.open-mpi.org> wrote:
>>>> >>
>>>> >> Is SELinux running on ArchLinux under Termux?
>>>> >>
>>>> >> On 2/25/2021 4:36 PM, LINUS FERNANDES via users wrote:
>>>> >> > Yes, I did not receive this in my inbox since I set to receive
>>>> digest.
>>>> >> >
>>>> >> > --------
>>>> >> > ifconfig output:
>>>> >> >
>>>> >> > dummy0: flags=195<UP,BROADCAST,RUNNING,NOARP> mtu 1500
>>>> >> > inet6 fe80::38a0:1bff:fe81:d4f5 prefixlen 64 scopeid
>>>> 0x20<link>
>>>> >> > unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
>>>> >> > txqueuelen 0 (UNSPEC)
>>>> >> > RX packets 0 bytes 0 (0.0 B)
>>>> >> > RX errors 0 dropped 0 overruns 0 frame 0
>>>> >> > TX packets 3 bytes 210 (210.0 B)
>>>> >> > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>> >> >
>>>> >> > lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
>>>> >> > inet 127.0.0.1 netmask 255.0.0.0
>>>> >> > inet6 ::1 prefixlen 128 scopeid 0x10<host>
>>>> >> > unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
>>>> >> > txqueuelen 0 (UNSPEC)
>>>> >> > RX packets 17247 bytes 2062939 (1.9 MiB)
>>>> >> > RX errors 0 dropped 0 overruns 0 frame 0
>>>> >> > TX packets 17247 bytes 2062939 (1.9 MiB)
>>>> >> > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>> >> >
>>>> >> > p2p0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
>>>> >> > unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
>>>> >> > txqueuelen 1000 (UNSPEC)
>>>> >> > RX packets 0 bytes 0 (0.0 B)
>>>> >> > RX errors 0 dropped 0 overruns 0 frame 0
>>>> >> > TX packets 0 bytes 0 (0.0 B)
>>>> >> > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>> >> >
>>>> >> > rmnet_data0: flags=65<UP,RUNNING> mtu 1500
>>>> >> > inet 10.140.58.138 netmask 255.255.255.252
>>>> >> > inet6 fe80::93a5:ad99:4660:adc4 prefixlen 64 scopeid
>>>> 0x20<link>
>>>> >> > unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
>>>> >> > txqueuelen 1000 (UNSPEC)
>>>> >> > RX packets 416796 bytes 376287723 (358.8 MiB)
>>>> >> > RX errors 0 dropped 0 overruns 0 frame 0
>>>> >> > TX packets 318293 bytes 69933666 (66.6 MiB)
>>>> >> > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>> >> >
>>>> >> > rmnet_data7: flags=65<UP,RUNNING> mtu 2000
>>>> >> > inet6 fe80::a6b7:c914:44de:639 prefixlen 64 scopeid
>>>> 0x20<link>
>>>> >> > unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
>>>> >> > txqueuelen 1000 (UNSPEC)
>>>> >> > RX packets 8 bytes 620 (620.0 B)
>>>> >> > RX errors 0 dropped 0 overruns 0 frame 0
>>>> >> > TX packets 10 bytes 752 (752.0 B)
>>>> >> > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>> >> >
>>>> >> > rmnet_ipa0: flags=65<UP,RUNNING> mtu 2000
>>>> >> > unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
>>>> >> > txqueuelen 1000 (UNSPEC)
>>>> >> > RX packets 222785 bytes 381290027 (363.6 MiB)
>>>> >> > RX errors 0 dropped 0 overruns 0 frame 0
>>>> >> > TX packets 318303 bytes 69934418 (66.6 MiB)
>>>> >> > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>> >> >
>>>> >> > wlan0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
>>>> >> > unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
>>>> >> > txqueuelen 1000 (UNSPEC)
>>>> >> > RX packets 650238 bytes 739939859 (705.6 MiB)
>>>> >> > RX errors 0 dropped 0 overruns 0 frame 0
>>>> >> > TX packets 408284 bytes 63728624 (60.7 MiB)
>>>> >> > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>> >> >
>>>> >> >
>>>> >> > -----
>>>> >> > ip addr output:
>>>> >> >
>>>> >> > 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
>>>> >> > group default
>>>> >> > link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>>>> >> > inet 127.0.0.1/8 <http://127.0.0.1/8> scope host lo
>>>> >> > valid_lft forever preferred_lft forever
>>>> >> > inet6 ::1/128 scope host
>>>> >> > valid_lft forever preferred_lft forever
>>>> >> > 2: dummy0: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue
>>>> state
>>>> >> > UNKNOWN group default
>>>> >> > link/ether 3a:a0:1b:81:d4:f5 brd ff:ff:ff:ff:ff:ff
>>>> >> > inet6 fe80::38a0:1bff:fe81:d4f5/64 scope link
>>>> >> > valid_lft forever preferred_lft forever
>>>> >> > 3: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default
>>>> >> > link/sit 0.0.0.0 brd 0.0.0.0
>>>> >> > 4: rmnet_ipa0: <UP,LOWER_UP> mtu 2000 qdisc pfifo_fast state
>>>> UNKNOWN
>>>> >> > group default qlen 1000
>>>> >> > link/[530]
>>>> >> > 5: rmnet_data0: <UP,LOWER_UP> mtu 1500 qdisc htb state UNKNOWN
>>>> group
>>>> >> > default qlen 1000
>>>> >> > link/[530]
>>>> >> > inet 10.140.58.138/30 <http://10.140.58.138/30> scope global
>>>> >> > rmnet_data0
>>>> >> > valid_lft forever preferred_lft forever
>>>> >> > inet6 fe80::93a5:ad99:4660:adc4/64 scope link
>>>> >> > valid_lft forever preferred_lft forever
>>>> >> > 6: rmnet_data1: <> mtu 1500 qdisc noop state DOWN group default
>>>> qlen 1000
>>>> >> > link/[530]
>>>> >> > 7: rmnet_data2: <> mtu 1500 qdisc noop state DOWN group default
>>>> qlen 1000
>>>> >> > link/[530]
>>>> >> > 8: rmnet_data3: <> mtu 1500 qdisc noop state DOWN group default
>>>> qlen 1000
>>>> >> > link/[530]
>>>> >> > 9: rmnet_data4: <> mtu 1500 qdisc noop state DOWN group default
>>>> qlen 1000
>>>> >> > link/[530]
>>>> >> > 10: rmnet_data5: <> mtu 1500 qdisc noop state DOWN group default
>>>> qlen 1000
>>>> >> > link/[530]
>>>> >> > 11: rmnet_data6: <> mtu 1500 qdisc noop state DOWN group default
>>>> qlen 1000
>>>> >> > link/[530]
>>>> >> > 12: rmnet_data7: <UP,LOWER_UP> mtu 2000 qdisc htb state UNKNOWN
>>>> group
>>>> >> > default qlen 1000
>>>> >> > link/[530]
>>>> >> > inet6 fe80::a6b7:c914:44de:639/64 scope link
>>>> >> > valid_lft forever preferred_lft forever
>>>> >> > 13: r_rmnet_data0: <> mtu 1500 qdisc noop state DOWN group default
>>>> >> > qlen 1000
>>>> >> > link/[530]
>>>> >> > 14: r_rmnet_data1: <> mtu 1500 qdisc noop state DOWN group default
>>>> >> > qlen 1000
>>>> >> > link/[530]
>>>> >> > 15: r_rmnet_data2: <> mtu 1500 qdisc noop state DOWN group default
>>>> >> > qlen 1000
>>>> >> > link/[530]
>>>> >> > 16: r_rmnet_data3: <> mtu 1500 qdisc noop state DOWN group default
>>>> >> > qlen 1000
>>>> >> > link/[530]
>>>> >> > 17: r_rmnet_data4: <> mtu 1500 qdisc noop state DOWN group default
>>>> >> > qlen 1000
>>>> >> > link/[530]
>>>> >> > 18: r_rmnet_data5: <> mtu 1500 qdisc noop state DOWN group default
>>>> >> > qlen 1000
>>>> >> > link/[530]
>>>> >> > 19: r_rmnet_data6: <> mtu 1500 qdisc noop state DOWN group default
>>>> >> > qlen 1000
>>>> >> > link/[530]
>>>> >> > 20: r_rmnet_data7: <> mtu 1500 qdisc noop state DOWN group default
>>>> >> > qlen 1000
>>>> >> > link/[530]
>>>> >> > 21: r_rmnet_data8: <> mtu 1500 qdisc noop state DOWN group default
>>>> >> > qlen 1000
>>>> >> > link/[530]
>>>> >> > 22: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq
>>>> state
>>>> >> > DOWN group default qlen 1000
>>>> >> > link/ether 04:d1:3a:07:70:4b brd ff:ff:ff:ff:ff:ff
>>>> >> > 23: p2p0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq
>>>> state
>>>> >> > DOWN group default qlen 1000
>>>> >> > link/ether 06:d1:3a:07:70:4b brd ff:ff:ff:ff:ff:ff
>>>> >> >
>>>> >> >
>>>> >> > This is on Arch Linux on Termux.
>>>> >> >
>>>> >> > Similar output on Termux available.
>>>> >> >
>>>> >> >
>>>>
>>>
>>
>> --
>> Jeff Squyres
>> jsquy...@cisco.com
>>
>>
>
> --
> Jeff Squyres
> jsquy...@cisco.com
>
>
