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TCP backend: does not work on MacOS #144

Closed weidendo closed 6 years ago

weidendo commented 6 years ago

It is expected that the TCP backend does not work when using UNIX domain sockets, as it uses linux-specific "abstract" UNIX domains sockets.

However, forcing TCP sockets via a config file with

0 = localhost 4444
1 = localhost 4445

does not work either. Both processes hang on each example. Will provide details soon.

AlexanderKurtz commented 6 years ago

Could you try something like this with the latest master?

$ cat config.txt 
[general]
# nothing here

[addresses]
rank0 = localhost 2000
rank1 = localhost 2001
$ export LAIK_BACKEND=tcp LAIK_TCP_CONFIG=config.txt 
$ time ( examples/jac3d 300 & examples/jac3d 300; wait )
300 x 300 x 300 cells (mem 432.0 MB), running 50 iterations with 2 tasks
Residuum after  1 iters: 81833143.888938
Residuum after 11 iters: 145928.481950
Residuum after 21 iters: 34990.353157
Residuum after 31 iters: 19320.487049
Residuum after 41 iters: 12616.052283

real    0m9.135s
user    0m18.030s
sys 0m0.208s
$
weidendo commented 6 years ago

Works, nice!

Now I can try to couple my Dell and my Mac laptops. Perhaps we need to get automatic load balancing working :-)