openmpi runtime error: Hello World run on hosts
I'm trying to setup a cluster. Up to now I'm testing it only with 1 master and 1 slave. Running the script from the master it starts printing the HelloWorld, but then I get the following error:
Primary job terminated normally, but 1 process returned a non-zero exit code.. Per user-direction, the job has been aborted.
it keeps printing HelloWorld and after a while:
mpirun detected that one or more processes exited with non-zero status, thus causing the job to be terminated. The first process to do so was:
Process name: [[62648,1],2]
Exit code: 2
Then the code stops. By chance I tried to run the script from the slave and it works. I can't figure out why.
I've set passwordless SSH and running a file located in a nfs-mounted folder.
Can you help me?
Thanks
parallel-processing cluster-computing openmpi
asked Nov 19 at 22:01
Fabio Semeraro
62
|
show 4 more comments
I'm trying to setup a cluster. Up to now I'm testing it only with 1 master and 1 slave. Running the script from the master it starts printing the HelloWorld, but then I get the following error:
Primary job terminated normally, but 1 process returned a non-zero exit code.. Per user-direction, the job has been aborted.
it keeps printing HelloWorld and after a while:
mpirun detected that one or more processes exited with non-zero status, thus causing the job to be terminated. The first process to do so was:
Process name: [[62648,1],2]
Exit code: 2
Then the code stops. By chance I tried to run the script from the slave and it works. I can't figure out why.
I've set passwordless SSH and running a file located in a nfs-mounted folder.
Can you help me?
Thanks
parallel-processing cluster-computing openmpi
asked Nov 19 at 22:01
Fabio Semeraro
62
please post your code !
– Gilles Gouaillardet
Nov 20 at 0:00
It is a simple HelloWorld in Python:while True: print('HelloWorld')Then I do:mpirun -np 4 -hostfile myhosts python3 helloworld.pyRunning it from the slave, the mpirun works perfectly. I'm trying to figure out why the master isn't able to do the same.
– Fabio Semeraro
Nov 20 at 0:04
can you simplypython3 helloworld.pyon all your nodes ?
– Gilles Gouaillardet
Nov 20 at 0:09
In serial and in local parallel it works on all nodes. The error arises when I try to use both master and slave from master, while from slave I can run the command and all runs.
– Fabio Semeraro
Nov 20 at 0:18
this program basically overflowsstdout, so I am not sure of what you expect. what if youmpirun ... hostname? if it works, then I suggest you try ampi4pyhelloworld.
– Gilles Gouaillardet
Nov 20 at 0:24
|
show 4 more comments
I'm trying to setup a cluster. Up to now I'm testing it only with 1 master and 1 slave. Running the script from the master it starts printing the HelloWorld, but then I get the following error:
Primary job terminated normally, but 1 process returned a non-zero exit code.. Per user-direction, the job has been aborted.
it keeps printing HelloWorld and after a while:
mpirun detected that one or more processes exited with non-zero status, thus causing the job to be terminated. The first process to do so was:
Process name: [[62648,1],2]
Exit code: 2
Then the code stops. By chance I tried to run the script from the slave and it works. I can't figure out why.
I've set passwordless SSH and running a file located in a nfs-mounted folder.
Can you help me?
Thanks
parallel-processing cluster-computing openmpi
asked Nov 19 at 22:01
Fabio Semeraro
62
I'm trying to setup a cluster. Up to now I'm testing it only with 1 master and 1 slave. Running the script from the master it starts printing the HelloWorld, but then I get the following error:
Primary job terminated normally, but 1 process returned a non-zero exit code.. Per user-direction, the job has been aborted.
it keeps printing HelloWorld and after a while:
mpirun detected that one or more processes exited with non-zero status, thus causing the job to be terminated. The first process to do so was:
Process name: [[62648,1],2]
Exit code: 2
Then the code stops. By chance I tried to run the script from the slave and it works. I can't figure out why.
I've set passwordless SSH and running a file located in a nfs-mounted folder.
Can you help me?
Thanks
parallel-processing cluster-computing openmpi
parallel-processing cluster-computing openmpi
asked Nov 19 at 22:01
Fabio Semeraro
62
asked Nov 19 at 22:01
Fabio Semeraro
62
asked Nov 19 at 22:01
Fabio Semeraro
62
asked Nov 19 at 22:01
Fabio Semeraro
62
asked Nov 19 at 22:01
Fabio Semeraro
62
62
please post your code !
– Gilles Gouaillardet
Nov 20 at 0:00
It is a simple HelloWorld in Python:while True: print('HelloWorld')Then I do:mpirun -np 4 -hostfile myhosts python3 helloworld.pyRunning it from the slave, the mpirun works perfectly. I'm trying to figure out why the master isn't able to do the same.
– Fabio Semeraro
Nov 20 at 0:04
can you simplypython3 helloworld.pyon all your nodes ?
– Gilles Gouaillardet
Nov 20 at 0:09
In serial and in local parallel it works on all nodes. The error arises when I try to use both master and slave from master, while from slave I can run the command and all runs.
– Fabio Semeraro
Nov 20 at 0:18
this program basically overflowsstdout, so I am not sure of what you expect. what if youmpirun ... hostname? if it works, then I suggest you try ampi4pyhelloworld.
– Gilles Gouaillardet
Nov 20 at 0:24
|
show 4 more comments
please post your code !
– Gilles Gouaillardet
Nov 20 at 0:00
It is a simple HelloWorld in Python:while True: print('HelloWorld')Then I do:mpirun -np 4 -hostfile myhosts python3 helloworld.pyRunning it from the slave, the mpirun works perfectly. I'm trying to figure out why the master isn't able to do the same.
– Fabio Semeraro
Nov 20 at 0:04
can you simplypython3 helloworld.pyon all your nodes ?
– Gilles Gouaillardet
Nov 20 at 0:09
In serial and in local parallel it works on all nodes. The error arises when I try to use both master and slave from master, while from slave I can run the command and all runs.
– Fabio Semeraro
Nov 20 at 0:18
this program basically overflowsstdout, so I am not sure of what you expect. what if youmpirun ... hostname? if it works, then I suggest you try ampi4pyhelloworld.
– Gilles Gouaillardet
Nov 20 at 0:24
please post your code !
– Gilles Gouaillardet
Nov 20 at 0:00
please post your code !
– Gilles Gouaillardet
Nov 20 at 0:00
It is a simple HelloWorld in Python:
while True: print('HelloWorld') Then I do: mpirun -np 4 -hostfile myhosts python3 helloworld.py Running it from the slave, the mpirun works perfectly. I'm trying to figure out why the master isn't able to do the same.– Fabio Semeraro
Nov 20 at 0:04
It is a simple HelloWorld in Python:
while True: print('HelloWorld') Then I do: mpirun -np 4 -hostfile myhosts python3 helloworld.py Running it from the slave, the mpirun works perfectly. I'm trying to figure out why the master isn't able to do the same.– Fabio Semeraro
Nov 20 at 0:04
can you simply
python3 helloworld.py on all your nodes ?– Gilles Gouaillardet
Nov 20 at 0:09
can you simply
python3 helloworld.py on all your nodes ?– Gilles Gouaillardet
Nov 20 at 0:09
In serial and in local parallel it works on all nodes. The error arises when I try to use both master and slave from master, while from slave I can run the command and all runs.
– Fabio Semeraro
Nov 20 at 0:18
In serial and in local parallel it works on all nodes. The error arises when I try to use both master and slave from master, while from slave I can run the command and all runs.
– Fabio Semeraro
Nov 20 at 0:18
this program basically overflows
stdout, so I am not sure of what you expect. what if you mpirun ... hostname ? if it works, then I suggest you try a mpi4py helloworld.– Gilles Gouaillardet
Nov 20 at 0:24
this program basically overflows
stdout, so I am not sure of what you expect. what if you mpirun ... hostname ? if it works, then I suggest you try a mpi4py helloworld.– Gilles Gouaillardet
Nov 20 at 0:24
|
show 4 more comments
1 Answer
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SOLVED: I've parsed all configurations files I've modified and finally there was a mistake in /etc/hosts. This is about the program working if launched from the node to the master and not viceversa. Regarding the program stopping, it is somehow related to the node not able to find the file to run. Fixed this setting up again the nfs.
Thanks for your help, hope this can be useful to other users.
answered Dec 16 at 20:17
Fabio Semeraro
62
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SOLVED: I've parsed all configurations files I've modified and finally there was a mistake in /etc/hosts. This is about the program working if launched from the node to the master and not viceversa. Regarding the program stopping, it is somehow related to the node not able to find the file to run. Fixed this setting up again the nfs.
Thanks for your help, hope this can be useful to other users.
answered Dec 16 at 20:17
Fabio Semeraro
62
add a comment |
SOLVED: I've parsed all configurations files I've modified and finally there was a mistake in /etc/hosts. This is about the program working if launched from the node to the master and not viceversa. Regarding the program stopping, it is somehow related to the node not able to find the file to run. Fixed this setting up again the nfs.
Thanks for your help, hope this can be useful to other users.
answered Dec 16 at 20:17
Fabio Semeraro
62
add a comment |
SOLVED: I've parsed all configurations files I've modified and finally there was a mistake in /etc/hosts. This is about the program working if launched from the node to the master and not viceversa. Regarding the program stopping, it is somehow related to the node not able to find the file to run. Fixed this setting up again the nfs.
Thanks for your help, hope this can be useful to other users.
answered Dec 16 at 20:17
Fabio Semeraro
62
SOLVED: I've parsed all configurations files I've modified and finally there was a mistake in /etc/hosts. This is about the program working if launched from the node to the master and not viceversa. Regarding the program stopping, it is somehow related to the node not able to find the file to run. Fixed this setting up again the nfs.
Thanks for your help, hope this can be useful to other users.
answered Dec 16 at 20:17
Fabio Semeraro
62
answered Dec 16 at 20:17
Fabio Semeraro
62
answered Dec 16 at 20:17
Fabio Semeraro
62
answered Dec 16 at 20:17
Fabio Semeraro
62
62
add a comment |
add a comment |
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please post your code !
– Gilles Gouaillardet
Nov 20 at 0:00
It is a simple HelloWorld in Python:
while True: print('HelloWorld')Then I do:mpirun -np 4 -hostfile myhosts python3 helloworld.pyRunning it from the slave, the mpirun works perfectly. I'm trying to figure out why the master isn't able to do the same.– Fabio Semeraro
Nov 20 at 0:04
can you simply
python3 helloworld.pyon all your nodes ?– Gilles Gouaillardet
Nov 20 at 0:09
In serial and in local parallel it works on all nodes. The error arises when I try to use both master and slave from master, while from slave I can run the command and all runs.
– Fabio Semeraro
Nov 20 at 0:18
this program basically overflows
stdout, so I am not sure of what you expect. what if youmpirun ... hostname? if it works, then I suggest you try ampi4pyhelloworld.– Gilles Gouaillardet
Nov 20 at 0:24