ERROR: child process failed, exited with error number 100

[Mehrian]

Dear all
I'm trying to test the branin.py on the cluster (On my laptop every thing is OK), and I have the following error when I try to start mongo using command ; "mongod --fork --logpath --dbpath".

ERROR: child process failed, exited with error number 100

I have to mention that, when I type "mongo" on the cluster it says:

MongoDB shell version: 2.4.9
connecting to: test
Server has startup warnings:
Mon May 11 13:09:59.173 [initandlisten]
Mon May 11 13:09:59.173 [initandlisten] ** WARNING: You are running on a NUMA machine.
Mon May 11 13:09:59.173 [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
Mon May 11 13:09:59.173 [initandlisten] ** numactl --interleave=all mongod [other options]
Mon May 11 13:09:59.173 [initandlisten]

So, I tried starting mongo using command; "numactl --interleave=all mongod --fork --logpath --dbpath", but didn't see any difference in the output!

Thanks,
Mohammad

[JasperSnoek]

Hi Mohammad, try running the same command without the --fork argument and
it will give you a more interpret-able error message.

Jasper

On Mon, May 11, 2015 at 8:42 AM, Mehrian notifications@github.com wrote:

Dear all
I'm trying to test the branin.py on the cluster (On my laptop every thing
is OK), and I have the following error when I try to start mongo using
command ; "mongod --fork --logpath --dbpath".

ERROR: child process failed, exited with error number 100

I have to mention that, when I type "mongo" on the cluster it says:

MongoDB shell version: 2.4.9
connecting to: test
Server has startup warnings:
Mon May 11 13:09:59.173 [initandlisten]
Mon May 11 13:09:59.173 [initandlisten] ** WARNING: You are running on a
NUMA machine.
Mon May 11 13:09:59.173 [initandlisten] ** We suggest launching mongod
like this to avoid performance problems:
Mon May 11 13:09:59.173 [initandlisten] ** numactl --interleave=all mongod
[other options]
Mon May 11 13:09:59.173 [initandlisten]

So, I tried starting mongo using command; "numactl --interleave=all mongod
--fork --logpath --dbpath", but didn't see any difference in the output!

Thanks,
Mohammad

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#21.

[Mehrian]

Hi Jasper
When I tried it without --fork, it seems that Mongo doesn't start, because when I run the command "python main.py", the output is as follow. I think the problem is somehow related to the cluster. because I ran the branin.py on my laptop without any error! I'm wondering if I have to install additional stuff on the cluster!

Traceback (most recent call last):
File "main.py", line 198, in
from spearmint.utils.database.mongodb import MongoDB
ImportError: No module named spearmint.utils.database.mongodb

Mohammad

[JasperSnoek]

Can you show what the error message is when you run mongod without --fork?

Jasper

On Tue, May 12, 2015 at 3:43 AM, Mehrian notifications@github.com wrote:

Hi Jasper
When I tried it without --fork, it seems that Mongo doesn't start, because
when I run the command "python main.py", the output is as follow. I think
the problem is somehow related to the cluster. because I ran the branin.py
on my laptop without any error! I'm wondering if I have to install
additional stuff on the cluster!

Traceback (most recent call last):
File "main.py", line 198, in
from spearmint.utils.database.mongodb import MongoDB
ImportError: No module named spearmint.utils.database.mongodb

Mohammad

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#21 (comment).

[Mehrian]

There is no error when I run it without --fork! The output is like this:

log file [/home/mehrianmohammad/Spearmint-master/examples/simple/--dbpath] exists; copied to temporary file [/home/mehrianmohammad/Spearmint-master/examples/simple/--dbpath.2015-05-12T14-26-16]

Mohammad

[JasperSnoek]

Ok, that looks fine. You'll likely just have to install spearmint with pip
"pip install -e </path/to/spearmint/root>" or add the spearmint directory
to your pythonpath.

Jasper

On Tue, May 12, 2015 at 10:26 AM, Mehrian notifications@github.com wrote:

There is no error when I run it without --fork! The output is like this:

log file [/home/mehrianmohammad/Spearmint-master/examples/simple/--dbpath]
exists; copied to temporary file
[/home/mehrianmohammad/Spearmint-master/examples/simple/--dbpath.2015-05-12T14-26-16]

Mohammad

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#21 (comment).

[Mehrian]

Hi Jasper
On the cluster that I have installed Spearmint package, I am NOT the administrative!
So, Would you please let me know what changes I have to made while installing the package from the beginning to use it as a normal user?
I think lots of my errors are because the fact that I don't have access to some administrative files?!!

Also, I install spearmint again! ("pip install -e </path/to/spearmint/root>"), and I have no more that child process error for one day!! and again today I see that error (I think these are all because I'm NOT the admin on the cluster!)

Thanks in advance,
Mohammad

[JasperSnoek]

Hi Mehrian, that unfortunately often depends on the exact configuration on
the cluster. However, I'd recommend installing the anaconda python
distribution. They allow you to run it in a virtual environment that
doesn't require admin privileges.

Jasper

On Wed, May 27, 2015 at 10:40 AM, Mehrian notifications@github.com wrote:

Hi Jasper
On the cluster that I have installed Spearmint package, I am NOT the
administrative!

So, Would you please let me know what changes I have to made while
installing the package from the beginning to use it as a normal user?
I think lots of my errors are because the fact that I don't have access to
some administrative files?!!
Thanks in advance,
Mohammad

—
Reply to this email directly or view it on GitHub
#21 (comment).