Re: [slurm-users] run bash script in spank plugin

[Yair Yarom]

I'm also in favor of epilog scripts, though it really depends on what
you are eventually trying to achieve.

Also, I'm not sure I understand what you meant by the slurm job
sleeping for 6 seconds and rebooting. You did want it to reboot, no?
The 4 "missing" seconds might be the time difference between the spank
and the job starting times.

If you still require the spank plugin and it doesn't work, I can
suggest trying to remove the '&' from the exec, and the wait() from
the end, though I'm not sure it'll matter. You could monitor the node
directly and see if the spank plugin script is inside a slurm
controlled cgroup. In which case, you'd have to move it out of it.


On Mon, Jun 4, 2018 at 6:37 PM, Brian Andrus  wrote:
> Seems like there are better approaches.
>
> In this situation, I would use an epilogue script and give sudo access to
> the script. Check out https://slurm.schedmd.com/prolog_epilog.html
>
> That would likely be much easier and fit into the methodology slurm uses.
>
> Brian Andrus
> Firstspot, Inc.
>
>
> On 6/4/2018 8:11 AM, Tueur Volvo wrote:
>
> I would like to run a bash script or binary executable as root (even if the
> user who started the job doesn't have root rights) at the end of a job if I
> put an option in my spank plugin
>
> 2018-06-04 16:36 GMT+02:00 John Hearns :
>>
>> That kinnddd  of...  defeats...  the purpose  of a job
>> scheduler.
>> I am very sure that you know why you need this and you have a good reason
>> for doing it.  Over to others on the list, sorry.
>>
>> On 4 June 2018 at 16:15, Tueur Volvo  wrote:
>>>
>>> no I don't have dependency treated.
>>>
>>> during the job, I would like to run a program on the machine running the
>>> job
>>> but I'd like the program to keep running even after the job ends.
>>>
>>> 2018-06-04 15:30 GMT+02:00 John Hearns :

 Tueur what are you trying to achieve here?  The example you give is
 touch /tmp/newfile.txt'
 I think you are trying to send a signal to another process. Could this
 be 'Hey - the job has finished and there is a new file for you to process'
 If that is so, there may be better ways to do this. If you have a
 post-processing step, then you can submit a job whihc depends on the main
 job.
 https://hpc.nih.gov/docs/job_dependencies.html

 On 4 June 2018 at 15:20, Tueur Volvo  wrote:
>
> thanks for your answer, i try some solution but it's not work
>
> i try to add setsid and setpgrp for isolate my new process but slurm
> job sleep 6secondes and reboot my machine (i test with reboot command, but
> we can make other bash command, it's just example)
>
> pid_t cpid; //process id's and process groups
>
> cpid = fork();
>
> if( cpid == 0 ){
> setsid();
> setpgrp();
> execl("/bin/sh", "sh", "-c", "sleep 10; reboot1&", NULL);
>
> }
> wait(NULL);
>
>
> maybe i have a error in my code ?
>
> 2018-05-31 9:37 GMT+02:00 Yair Yarom :
>>
>> Hi,
>>
>> I'm not sure how slurm/spank handles child processes but this might be
>> intentional. So there might be some issues if this were to work.
>>
>> You can try instead of calling system(), to use fork() + exec(). If
>> that still doesn't work, try calling setsid() before the exec(). I can
>> think of situations where your process might still get killed, e.g. if
>> slurm (or even systemd) kills all subprocesses of the "job", by
>> looking at the cgroup. If that's the case, you'll need to move it to
>> another cgroup in addition/instead of setsid().
>>
>> Yair.
>>
>>
>>
>> On Wed, May 30, 2018 at 5:16 PM, Tueur Volvo 
>> wrote:
>> > Hello i have question, how run in background bash script in spank
>> > plugin ?
>> >
>> > in my spank plugin in function : slurm_spank_task_init_privileged
>> >
>> > i want to run this script :
>> >
>> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
>> >
>> > i want to run in independant process this bash script, i don't want
>> > wait 10
>> > seconde in my slurm plugin
>> >
>> > i have this code :
>> > int slurm_spank_task_init_privileged (spank_t sp, int ac, char **av)
>> > {
>> >
>> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
>> >
>> > return 0;
>> >
>> > }
>> >
>> > actualy it's not work, when slurm ending to run my job, he kill my
>> > nohup
>> > command
>> >
>> > if i  had in my c code sleep 12, my bash script work
>> >
>> >
>> > int slurm_spank_task_init_privileged (spank_t sp, int ac, char **av)
>> > {
>> >
>> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
>> >
>> > sleep(12);
>> >
>> > return 0;
>> >
>> > }
>> >
>> > but i don't want to wai

Re: [slurm-users] run bash script in spank plugin

[Brian Andrus]

Seems like there are better approaches.

In this situation, I would use an epilogue script and give sudo access 
to the script. Check out https://slurm.schedmd.com/prolog_epilog.html


That would likely be much easier and fit into the methodology slurm uses.

Brian Andrus
Firstspot, Inc.


On 6/4/2018 8:11 AM, Tueur Volvo wrote:
I would like to run a bash script or binary executable as root (even 
if the user who started the job doesn't have root rights) at the end 
of a job if I put an option in my spank plugin


2018-06-04 16:36 GMT+02:00 John Hearns >:


That kinnddd  of...  defeats...  the purpose  of a job
scheduler.
I am very sure that you know why you need this and you have a good
reason for doing it.  Over to others on the list, sorry.

On 4 June 2018 at 16:15, Tueur Volvo mailto:huitr...@gmail.com>> wrote:

no I don't have dependency treated.

during the job, I would like to run a program on the machine
running the job
but I'd like the program to keep running even after the job ends.

2018-06-04 15:30 GMT+02:00 John Hearns mailto:hear...@googlemail.com>>:

Tueur what are you trying to achieve here?  The example
you give istouch /tmp/newfile.txt'
I think you are trying to send a signal to another
process. Could this be 'Hey - the job has finished and
there is a new file for you to process'
If that is so, there may be better ways to do this. If you
have a post-processing step, then you can submit a job
whihc depends on the main job.
https://hpc.nih.gov/docs/job_dependencies.html


On 4 June 2018 at 15:20, Tueur Volvo mailto:huitr...@gmail.com>> wrote:

thanks for your answer, i try some solution but it's
not work

i try to add setsid and setpgrp for isolate my new
process but slurm job sleep 6secondes and reboot my
machine (i test with reboot command, but we can make
other bash command, it's just example)

    pid_t cpid; //process id's and process groups

    cpid = fork();

    if( cpid == 0 ){
    setsid();
    setpgrp();
execl("/bin/sh", "sh", "-c", "sleep 10; reboot1&", NULL);

    }
    wait(NULL);


maybe i have a error in my code ?

2018-05-31 9:37 GMT+02:00 Yair Yarom
mailto:ir...@cs.huji.ac.il>>:

Hi,

I'm not sure how slurm/spank handles child
processes but this might be
intentional. So there might be some issues if this
were to work.

You can try instead of calling system(), to use
fork() + exec(). If
that still doesn't work, try calling setsid()
before the exec(). I can
think of situations where your process might still
get killed, e.g. if
slurm (or even systemd) kills all subprocesses of
the "job", by
looking at the cgroup. If that's the case, you'll
need to move it to
another cgroup in addition/instead of setsid().

    Yair.



On Wed, May 30, 2018 at 5:16 PM, Tueur Volvo
mailto:huitr...@gmail.com>>
wrote:
> Hello i have question, how run in background
bash script in spank plugin ?
>
> in my spank plugin in function :
slurm_spank_task_init_privileged
>
> i want to run this script :
>
> system("nohup bash -c 'sleep 10 ; touch
/tmp/newfile.txt' &");
>
> i want to run in independant process this bash
script, i don't want wait 10
> seconde in my slurm plugin
>
> i have this code :
> int slurm_spank_task_init_privileged (spank_t
sp, int ac, char **av) {
>
> system("nohup bash -c 'sleep 10 ; touch
/tmp/newfile.txt' &");
>
> return 0;
>
> }
>
> actualy it's not work, when slurm ending to run
my job, he kill my nohup
> command
>
 

Re: [slurm-users] run bash script in spank plugin

[Tueur Volvo]

I would like to run a bash script or binary executable as root (even if the
user who started the job doesn't have root rights) at the end of a job if I
put an option in my spank plugin

2018-06-04 16:36 GMT+02:00 John Hearns :

> That kinnddd  of...  defeats...  the purpose  of a job
> scheduler.
> I am very sure that you know why you need this and you have a good reason
> for doing it.  Over to others on the list, sorry.
>
> On 4 June 2018 at 16:15, Tueur Volvo  wrote:
>
>> no I don't have dependency treated.
>>
>> during the job, I would like to run a program on the machine running the
>> job
>> but I'd like the program to keep running even after the job ends.
>>
>> 2018-06-04 15:30 GMT+02:00 John Hearns :
>>
>>> Tueur what are you trying to achieve here?  The example you give is
>>> touch /tmp/newfile.txt'
>>> I think you are trying to send a signal to another process. Could this
>>> be 'Hey - the job has finished and there is a new file for you to process'
>>> If that is so, there may be better ways to do this. If you have a
>>> post-processing step, then you can submit a job whihc depends on the main
>>> job.
>>> https://hpc.nih.gov/docs/job_dependencies.html
>>>
>>> On 4 June 2018 at 15:20, Tueur Volvo  wrote:
>>>
 thanks for your answer, i try some solution but it's not work

 i try to add setsid and setpgrp for isolate my new process but slurm
 job sleep 6secondes and reboot my machine (i test with reboot command, but
 we can make other bash command, it's just example)

 pid_t cpid; //process id's and process groups

 cpid = fork();

 if( cpid == 0 ){
 setsid();
 setpgrp();
 execl("/bin/sh", "sh", "-c", "sleep 10; reboot1&", NULL);

 }
 wait(NULL);


 maybe i have a error in my code ?

 2018-05-31 9:37 GMT+02:00 Yair Yarom :

> Hi,
>
> I'm not sure how slurm/spank handles child processes but this might be
> intentional. So there might be some issues if this were to work.
>
> You can try instead of calling system(), to use fork() + exec(). If
> that still doesn't work, try calling setsid() before the exec(). I can
> think of situations where your process might still get killed, e.g. if
> slurm (or even systemd) kills all subprocesses of the "job", by
> looking at the cgroup. If that's the case, you'll need to move it to
> another cgroup in addition/instead of setsid().
>
> Yair.
>
>
>
> On Wed, May 30, 2018 at 5:16 PM, Tueur Volvo 
> wrote:
> > Hello i have question, how run in background bash script in spank
> plugin ?
> >
> > in my spank plugin in function : slurm_spank_task_init_privileged
> >
> > i want to run this script :
> >
> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
> >
> > i want to run in independant process this bash script, i don't want
> wait 10
> > seconde in my slurm plugin
> >
> > i have this code :
> > int slurm_spank_task_init_privileged (spank_t sp, int ac, char
> **av) {
> >
> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
> >
> > return 0;
> >
> > }
> >
> > actualy it's not work, when slurm ending to run my job, he kill my
> nohup
> > command
> >
> > if i  had in my c code sleep 12, my bash script work
> >
> >
> > int slurm_spank_task_init_privileged (spank_t sp, int ac, char
> **av) {
> >
> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
> >
> > sleep(12);
> >
> > return 0;
> >
> > }
> >
> > but i don't want to wait, i want to run my bash script in independant
> > process
> >
> > thanks for advance for your help
> >
> >
> >
> >
>
>

>>>
>>
>

Re: [slurm-users] run bash script in spank plugin

[John Hearns]

That kinnddd  of...  defeats...  the purpose  of a job
scheduler.
I am very sure that you know why you need this and you have a good reason
for doing it.  Over to others on the list, sorry.

On 4 June 2018 at 16:15, Tueur Volvo  wrote:

> no I don't have dependency treated.
>
> during the job, I would like to run a program on the machine running the
> job
> but I'd like the program to keep running even after the job ends.
>
> 2018-06-04 15:30 GMT+02:00 John Hearns :
>
>> Tueur what are you trying to achieve here?  The example you give is
>> touch /tmp/newfile.txt'
>> I think you are trying to send a signal to another process. Could this be
>> 'Hey - the job has finished and there is a new file for you to process'
>> If that is so, there may be better ways to do this. If you have a
>> post-processing step, then you can submit a job whihc depends on the main
>> job.
>> https://hpc.nih.gov/docs/job_dependencies.html
>>
>> On 4 June 2018 at 15:20, Tueur Volvo  wrote:
>>
>>> thanks for your answer, i try some solution but it's not work
>>>
>>> i try to add setsid and setpgrp for isolate my new process but slurm job
>>> sleep 6secondes and reboot my machine (i test with reboot command, but we
>>> can make other bash command, it's just example)
>>>
>>> pid_t cpid; //process id's and process groups
>>>
>>> cpid = fork();
>>>
>>> if( cpid == 0 ){
>>> setsid();
>>> setpgrp();
>>> execl("/bin/sh", "sh", "-c", "sleep 10; reboot1&", NULL);
>>>
>>> }
>>> wait(NULL);
>>>
>>>
>>> maybe i have a error in my code ?
>>>
>>> 2018-05-31 9:37 GMT+02:00 Yair Yarom :
>>>
 Hi,

 I'm not sure how slurm/spank handles child processes but this might be
 intentional. So there might be some issues if this were to work.

 You can try instead of calling system(), to use fork() + exec(). If
 that still doesn't work, try calling setsid() before the exec(). I can
 think of situations where your process might still get killed, e.g. if
 slurm (or even systemd) kills all subprocesses of the "job", by
 looking at the cgroup. If that's the case, you'll need to move it to
 another cgroup in addition/instead of setsid().

 Yair.



 On Wed, May 30, 2018 at 5:16 PM, Tueur Volvo 
 wrote:
 > Hello i have question, how run in background bash script in spank
 plugin ?
 >
 > in my spank plugin in function : slurm_spank_task_init_privileged
 >
 > i want to run this script :
 >
 > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
 >
 > i want to run in independant process this bash script, i don't want
 wait 10
 > seconde in my slurm plugin
 >
 > i have this code :
 > int slurm_spank_task_init_privileged (spank_t sp, int ac, char **av)
 {
 >
 > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
 >
 > return 0;
 >
 > }
 >
 > actualy it's not work, when slurm ending to run my job, he kill my
 nohup
 > command
 >
 > if i  had in my c code sleep 12, my bash script work
 >
 >
 > int slurm_spank_task_init_privileged (spank_t sp, int ac, char **av)
 {
 >
 > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
 >
 > sleep(12);
 >
 > return 0;
 >
 > }
 >
 > but i don't want to wait, i want to run my bash script in independant
 > process
 >
 > thanks for advance for your help
 >
 >
 >
 >


>>>
>>
>

Re: [slurm-users] run bash script in spank plugin

[Tueur Volvo]

no I don't have dependency treated.

during the job, I would like to run a program on the machine running the job
but I'd like the program to keep running even after the job ends.

2018-06-04 15:30 GMT+02:00 John Hearns :

> Tueur what are you trying to achieve here?  The example you give is
> touch /tmp/newfile.txt'
> I think you are trying to send a signal to another process. Could this be
> 'Hey - the job has finished and there is a new file for you to process'
> If that is so, there may be better ways to do this. If you have a
> post-processing step, then you can submit a job whihc depends on the main
> job.
> https://hpc.nih.gov/docs/job_dependencies.html
>
> On 4 June 2018 at 15:20, Tueur Volvo  wrote:
>
>> thanks for your answer, i try some solution but it's not work
>>
>> i try to add setsid and setpgrp for isolate my new process but slurm job
>> sleep 6secondes and reboot my machine (i test with reboot command, but we
>> can make other bash command, it's just example)
>>
>> pid_t cpid; //process id's and process groups
>>
>> cpid = fork();
>>
>> if( cpid == 0 ){
>> setsid();
>> setpgrp();
>> execl("/bin/sh", "sh", "-c", "sleep 10; reboot1&", NULL);
>>
>> }
>> wait(NULL);
>>
>>
>> maybe i have a error in my code ?
>>
>> 2018-05-31 9:37 GMT+02:00 Yair Yarom :
>>
>>> Hi,
>>>
>>> I'm not sure how slurm/spank handles child processes but this might be
>>> intentional. So there might be some issues if this were to work.
>>>
>>> You can try instead of calling system(), to use fork() + exec(). If
>>> that still doesn't work, try calling setsid() before the exec(). I can
>>> think of situations where your process might still get killed, e.g. if
>>> slurm (or even systemd) kills all subprocesses of the "job", by
>>> looking at the cgroup. If that's the case, you'll need to move it to
>>> another cgroup in addition/instead of setsid().
>>>
>>> Yair.
>>>
>>>
>>>
>>> On Wed, May 30, 2018 at 5:16 PM, Tueur Volvo  wrote:
>>> > Hello i have question, how run in background bash script in spank
>>> plugin ?
>>> >
>>> > in my spank plugin in function : slurm_spank_task_init_privileged
>>> >
>>> > i want to run this script :
>>> >
>>> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
>>> >
>>> > i want to run in independant process this bash script, i don't want
>>> wait 10
>>> > seconde in my slurm plugin
>>> >
>>> > i have this code :
>>> > int slurm_spank_task_init_privileged (spank_t sp, int ac, char **av) {
>>> >
>>> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
>>> >
>>> > return 0;
>>> >
>>> > }
>>> >
>>> > actualy it's not work, when slurm ending to run my job, he kill my
>>> nohup
>>> > command
>>> >
>>> > if i  had in my c code sleep 12, my bash script work
>>> >
>>> >
>>> > int slurm_spank_task_init_privileged (spank_t sp, int ac, char **av) {
>>> >
>>> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
>>> >
>>> > sleep(12);
>>> >
>>> > return 0;
>>> >
>>> > }
>>> >
>>> > but i don't want to wait, i want to run my bash script in independant
>>> > process
>>> >
>>> > thanks for advance for your help
>>> >
>>> >
>>> >
>>> >
>>>
>>>
>>
>

Re: [slurm-users] run bash script in spank plugin

[John Hearns]

Tueur what are you trying to achieve here?  The example you give is
touch /tmp/newfile.txt'
I think you are trying to send a signal to another process. Could this be
'Hey - the job has finished and there is a new file for you to process'
If that is so, there may be better ways to do this. If you have a
post-processing step, then you can submit a job whihc depends on the main
job.
https://hpc.nih.gov/docs/job_dependencies.html

On 4 June 2018 at 15:20, Tueur Volvo  wrote:

> thanks for your answer, i try some solution but it's not work
>
> i try to add setsid and setpgrp for isolate my new process but slurm job
> sleep 6secondes and reboot my machine (i test with reboot command, but we
> can make other bash command, it's just example)
>
> pid_t cpid; //process id's and process groups
>
> cpid = fork();
>
> if( cpid == 0 ){
> setsid();
> setpgrp();
> execl("/bin/sh", "sh", "-c", "sleep 10; reboot1&", NULL);
>
> }
> wait(NULL);
>
>
> maybe i have a error in my code ?
>
> 2018-05-31 9:37 GMT+02:00 Yair Yarom :
>
>> Hi,
>>
>> I'm not sure how slurm/spank handles child processes but this might be
>> intentional. So there might be some issues if this were to work.
>>
>> You can try instead of calling system(), to use fork() + exec(). If
>> that still doesn't work, try calling setsid() before the exec(). I can
>> think of situations where your process might still get killed, e.g. if
>> slurm (or even systemd) kills all subprocesses of the "job", by
>> looking at the cgroup. If that's the case, you'll need to move it to
>> another cgroup in addition/instead of setsid().
>>
>> Yair.
>>
>>
>>
>> On Wed, May 30, 2018 at 5:16 PM, Tueur Volvo  wrote:
>> > Hello i have question, how run in background bash script in spank
>> plugin ?
>> >
>> > in my spank plugin in function : slurm_spank_task_init_privileged
>> >
>> > i want to run this script :
>> >
>> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
>> >
>> > i want to run in independant process this bash script, i don't want
>> wait 10
>> > seconde in my slurm plugin
>> >
>> > i have this code :
>> > int slurm_spank_task_init_privileged (spank_t sp, int ac, char **av) {
>> >
>> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
>> >
>> > return 0;
>> >
>> > }
>> >
>> > actualy it's not work, when slurm ending to run my job, he kill my nohup
>> > command
>> >
>> > if i  had in my c code sleep 12, my bash script work
>> >
>> >
>> > int slurm_spank_task_init_privileged (spank_t sp, int ac, char **av) {
>> >
>> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
>> >
>> > sleep(12);
>> >
>> > return 0;
>> >
>> > }
>> >
>> > but i don't want to wait, i want to run my bash script in independant
>> > process
>> >
>> > thanks for advance for your help
>> >
>> >
>> >
>> >
>>
>>
>

Re: [slurm-users] run bash script in spank plugin

[Tueur Volvo]

thanks for your answer, i try some solution but it's not work

i try to add setsid and setpgrp for isolate my new process but slurm job
sleep 6secondes and reboot my machine (i test with reboot command, but we
can make other bash command, it's just example)

pid_t cpid; //process id's and process groups

cpid = fork();

if( cpid == 0 ){
setsid();
setpgrp();
execl("/bin/sh", "sh", "-c", "sleep 10; reboot1&", NULL);

}
wait(NULL);


maybe i have a error in my code ?

2018-05-31 9:37 GMT+02:00 Yair Yarom :

> Hi,
>
> I'm not sure how slurm/spank handles child processes but this might be
> intentional. So there might be some issues if this were to work.
>
> You can try instead of calling system(), to use fork() + exec(). If
> that still doesn't work, try calling setsid() before the exec(). I can
> think of situations where your process might still get killed, e.g. if
> slurm (or even systemd) kills all subprocesses of the "job", by
> looking at the cgroup. If that's the case, you'll need to move it to
> another cgroup in addition/instead of setsid().
>
> Yair.
>
>
>
> On Wed, May 30, 2018 at 5:16 PM, Tueur Volvo  wrote:
> > Hello i have question, how run in background bash script in spank plugin
> ?
> >
> > in my spank plugin in function : slurm_spank_task_init_privileged
> >
> > i want to run this script :
> >
> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
> >
> > i want to run in independant process this bash script, i don't want wait
> 10
> > seconde in my slurm plugin
> >
> > i have this code :
> > int slurm_spank_task_init_privileged (spank_t sp, int ac, char **av) {
> >
> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
> >
> > return 0;
> >
> > }
> >
> > actualy it's not work, when slurm ending to run my job, he kill my nohup
> > command
> >
> > if i  had in my c code sleep 12, my bash script work
> >
> >
> > int slurm_spank_task_init_privileged (spank_t sp, int ac, char **av) {
> >
> > system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
> >
> > sleep(12);
> >
> > return 0;
> >
> > }
> >
> > but i don't want to wait, i want to run my bash script in independant
> > process
> >
> > thanks for advance for your help
> >
> >
> >
> >
>
>

Re: [slurm-users] run bash script in spank plugin

[Yair Yarom]

Hi,

I'm not sure how slurm/spank handles child processes but this might be
intentional. So there might be some issues if this were to work.

You can try instead of calling system(), to use fork() + exec(). If
that still doesn't work, try calling setsid() before the exec(). I can
think of situations where your process might still get killed, e.g. if
slurm (or even systemd) kills all subprocesses of the "job", by
looking at the cgroup. If that's the case, you'll need to move it to
another cgroup in addition/instead of setsid().

Yair.



On Wed, May 30, 2018 at 5:16 PM, Tueur Volvo  wrote:
> Hello i have question, how run in background bash script in spank plugin ?
>
> in my spank plugin in function : slurm_spank_task_init_privileged
>
> i want to run this script :
>
> system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
>
> i want to run in independant process this bash script, i don't want wait 10
> seconde in my slurm plugin
>
> i have this code :
> int slurm_spank_task_init_privileged (spank_t sp, int ac, char **av) {
>
> system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
>
> return 0;
>
> }
>
> actualy it's not work, when slurm ending to run my job, he kill my nohup
> command
>
> if i  had in my c code sleep 12, my bash script work
>
>
> int slurm_spank_task_init_privileged (spank_t sp, int ac, char **av) {
>
> system("nohup bash -c 'sleep 10 ; touch /tmp/newfile.txt' &");
>
> sleep(12);
>
> return 0;
>
> }
>
> but i don't want to wait, i want to run my bash script in independant
> process
>
> thanks for advance for your help
>
>
>
>