I have added your address to the list manually.
Rajeev
> On Jun 1, 2017, at 8:58 AM, Alex Rast <adr1r17(a)soton.ac.uk> wrote:
>
> Yes. And no, nothing showed up. It's literally like the subscriptions are being sent into the void. I tried blind posting a message to the list from that account and also got absolutely no notification either way, neither a message bounce/refusal nor an acknowledgement.
>
> I'd have thought that if the system had objected in some way you'd get either an immediate message on the Web page when you pressed subscribe, or a 'sorry, your subscription was refused' or some other such message back to the proposed address, in any case, so that doesn't appear superficially to be the likely reason.
>
> On 31/05/17 23:25, Jeff Hammond wrote:
>> Have you checked your spam folder for the subscription confirmation email?
>> I am subscribed to this list using a gmail handle with a similar construction, so I doubt the system objects to your handle or host, although I've probably been subscribed for a decade at this point.
>> Jeff
>> On Wed, May 31, 2017 at 9:01 AM, Alex Rast <adr1r17(a)soton.ac.uk <mailto:[email protected]>> wrote:
>> Dear sirs,
>> I've only subscribed under this e-mail address in absolute
>> desperation, because the one I actually need to use:
>> alex.rast.technical(a)gmail.com
>> <mailto:[email protected]>, doesn't seem to work with
>> the system. I've tried subscribing multiple times with this approach
>> only to receive absolute silence and no indication either that
>> something went wrong.
>> What needs to be done to get the above-referenced e-mail subscribed
>> to the list?
>> _______________________________________________
>> discuss mailing list discuss(a)mpich.org <mailto:[email protected]>
>> To manage subscription options or unsubscribe:
>> https://lists.mpich.org/mailman/listinfo/discuss
>> <https://lists.mpich.org/mailman/listinfo/discuss>
>> --
>> Jeff Hammond
>> jeff.science(a)gmail.com <mailto:[email protected]>
>> http://jeffhammond.github.io/
>> _______________________________________________
>> discuss mailing list discuss(a)mpich.org
>> To manage subscription options or unsubscribe:
>> https://lists.mpich.org/mailman/listinfo/discuss
> _______________________________________________
> discuss mailing list discuss(a)mpich.org
> To manage subscription options or unsubscribe:
> https://lists.mpich.org/mailman/listinfo/discuss
_______________________________________________
discuss mailing list discuss(a)mpich.org
To manage subscription options or unsubscribe:
https://lists.mpich.org/mailman/listinfo/discuss
Yes. And no, nothing showed up. It's literally like the subscriptions
are being sent into the void. I tried blind posting a message to the
list from that account and also got absolutely no notification either
way, neither a message bounce/refusal nor an acknowledgement.
I'd have thought that if the system had objected in some way you'd get
either an immediate message on the Web page when you pressed subscribe,
or a 'sorry, your subscription was refused' or some other such message
back to the proposed address, in any case, so that doesn't appear
superficially to be the likely reason.
On 31/05/17 23:25, Jeff Hammond wrote:
> Have you checked your spam folder for the subscription confirmation email?
>
> I am subscribed to this list using a gmail handle with a similar
> construction, so I doubt the system objects to your handle or host,
> although I've probably been subscribed for a decade at this point.
>
> Jeff
>
> On Wed, May 31, 2017 at 9:01 AM, Alex Rast <adr1r17(a)soton.ac.uk
> <mailto:[email protected]>> wrote:
>
> Dear sirs,
>
> I've only subscribed under this e-mail address in absolute
> desperation, because the one I actually need to use:
> alex.rast.technical(a)gmail.com
> <mailto:[email protected]>, doesn't seem to work with
> the system. I've tried subscribing multiple times with this approach
> only to receive absolute silence and no indication either that
> something went wrong.
>
> What needs to be done to get the above-referenced e-mail subscribed
> to the list?
> _______________________________________________
> discuss mailing list discuss(a)mpich.org <mailto:[email protected]>
> To manage subscription options or unsubscribe:
> https://lists.mpich.org/mailman/listinfo/discuss
> <https://lists.mpich.org/mailman/listinfo/discuss>
>
>
>
>
> --
> Jeff Hammond
> jeff.science(a)gmail.com <mailto:[email protected]>
> http://jeffhammond.github.io/
>
>
> _______________________________________________
> discuss mailing list discuss(a)mpich.org
> To manage subscription options or unsubscribe:
> https://lists.mpich.org/mailman/listinfo/discuss
>
_______________________________________________
discuss mailing list discuss(a)mpich.org
To manage subscription options or unsubscribe:
https://lists.mpich.org/mailman/listinfo/discuss
Thanks for the reply and valuable suggestion.
One more Question:
Anyway to avoid bringing down(cleaning up ) all MPI jobs when one job dies.
Regards
Sanjeev
On Thu, Jun 1, 2017 at 10:25 AM, Guo, Yanfei <yguo(a)anl.gov> wrote:
> On 5/30/17, 10:19 PM, "sanjeev s" <snjv.workmail(a)gmail.com> wrote:
>
> > Hi,
>
>
> > I have added the detailed use case..
>
>
> > > I did not follow what were you trying to do here. Can you be more
> specific?
>
> > Suppose I have an application which accepts some request from client and
> do
> > the MPI job on request arrival(lazy load of mpi lib). Now I started this
> > application through mpiexec on 4 machines.
> > mpiexec will start my application on 4 machines not MPI jobs. On request
> > arrival I will distribute MPI jobs to this cluster after doing some
> processing
> > in my application on master node.(1 of out of 4 I will designate as
> master
> > node). Now I want to add one more machine( having my application) to
> this
> > cluster, without stopping my already running applications. My master
> process
> > should be able to see this 5th machine and distribute the task. Is there
> any
> > way to achieve this?
>
> Is this "application" an MPI program? If so, there are two options. 1.
> Starting
> the MPI process on the 5th machine and have it connect to your existing
> processes (with MPI_Comm_connect/MPI_Comm_accept). 2. Letting the existing
> processes spawn new processes on the new machine (with MPI_Comm_spawn).
> You can
> check out the book "Using Advanced MPI" for details and examples. If the
> aforementioned application is not an MPI program, then what you are trying
> to
> do is beyond the scope of MPI.
>
>
>
> > > Also, When I took the size(number of instance for that comm), I am not
> > > getting the count for client instance. To distribute the task, I need
> to have
> > > additional logic to handle this case in my application.
>
> > Can you be more specific about which comm you were referring to?
>
>
>
> > I am referring to MPI_COMM_WORLD. Is there any resize kind of api which
> will
> > give me how many jobs are there on this comm after doing one accept
> connection?
>
> MPI_COMM_WORLD is created during MPI_Init. It does not change when a new
> process group is connected. The communicator that accepts the connection
> will
> give you an intercommunicator which allows the accepting processes to talk
> to
> the connecting processes. You can merge this intercommunicator to a
> intracommunicator that contains all the processes.
>
> > Hope this helps in understanding the problem.
>
>
> > Regards
> > Sanjeev
>
> Yanfei Guo
>
>
>
>
> On Mon, May 29, 2017 at 8:48 AM, sanjeev s
> <snjv.workmail(a)gmail.com> wrote:
>
> Hi,
>
>
> Thanks for the reply. I have given the detailed use case below.
>
>
> Regards
> Sanjeev
>
>
>
>
>
> On Sat, May 27, 2017 at 2:30 AM, Guo, Yanfei
> <yguo(a)anl.gov> wrote:
>
> Hi Sanjeev,
>
> Please see the inline comments below.
>
> Yanfei Guo
> Postdoctoral Researcher
> MCS Division, ANL
>
>
> On 5/26/17, 10:40 AM, "sanjeev s" <snjv.workmail(a)gmail.com> wrote:
>
> > Hi,
>
>
> > In dynamic process, I read about two models: Client server and parent
> child.
>
>
> > Client Server : We need to have dedicated threads each for client and
> server. Now considering all instances same , we will end up doing lot of
> thread creation apart from our application worker threads.
>
> I assume you are referring to the connect/accept model by client/server.
> In that case, you may need one thread on the server side to handle the
> incoming connection because the `MPI_Comm_accept` call
> is blocking. A dedicated thread is not necessary in the client.
> It is your application’s job to decide who is the server.
>
>
>
>
>
> Yes I am referring to same connect/accept model. I don't want to put this
> logic in our application. I want some external process manager ( like
> Hydra) which can handle this form me .Please see below for detail use case.
>
>
>
>
> > Moreover when 1 instance (app) goes down, we want
> that instance to come up without doing much manual work. We don't want to
> club this logic in our application.
>
> I did not follow what were you trying to do here.
> Can you be more specific?
>
>
>
> Suppose I have an application which accepts some request from client and
> do the MPI job on request arrival(lazy load of mpi lib). Now I started this
> application through mpiexec on 4 machines.
> mpiexec will start my application on 4 machines not MPI jobs. On request
> arrival I will distribute MPI jobs to this cluster after doing some
> processing in my application on master node.(1 of out of 4 I will designate
> as master node). Now I
> want to add one more machine( having my application) to this cluster,
> without stopping my already running applications. My master process should
> be able to see this 5th machine and distribute the task. Is there any way
> to achieve this?
>
>
>
>
>
> > Also, When I took the size(number of instance for that comm), I am not
> getting the count for client instance. To distribute the task, I need to
> have additional logic to handle this case in my application.
>
> Can you be more specific about which comm you were referring to?
>
>
>
> I am referring to MPI_COMM_WORLD. Is there any resize kind of api which
> will give me how many jobs are there on this comm after doing one accept
> connection?
>
>
> > 2) Parent child: Suppose we have started 4 instance on 4 different
> machines. Now we need to add another server. I don't think parent child/
> client server is good option in this case.
>
>
> > We don't want to build process management capabilities in our
> application. We are looking for process management in MPI itself (e.g in
> Hydra )so that we can leverage on that.
>
>
> > Please correct me if I am missing something in my understanding of
> Dynamic model.
>
>
> Regards
> Sanjeev Sinha
>
>
>
>
>
> On Fri, May 26, 2017 at 8:46 PM, Halim Amer
> <aamer(a)anl.gov> wrote:
>
> Sanjeev,
>
> > More precisely my requirement is suppose I started 4 instances of my
> > application. Now I want to add one more instance dynamically to this set
>
> From my understanding, dynamic processes would work fine for this case.
> Could you elaborate on why the dynamic process model is not sufficient for
> your needs?
>
> Halim
> www.mcs.anl.gov/~aamer <http://www.mcs.anl.gov/~aamer> <
> http://www.mcs.anl.gov/~aamer>
>
> On 5/26/17 9:11 AM, sanjeev s wrote:
>
>
> Hi mpich,
>
> I have a requirement where in we need to add start stop application
> instances on the fly before starting a job.Is there any mpich service
> available. I looked through dynamic process model, but its not sufficing
> our need.
>
> More precisely my requirement is suppose I started 4 instances of my
> application. Now I want to add one more instance dynamically to this set
>
> Is there any tool which MPICH supports for fault tolerance behavior?
>
> Thanks
> Sanjeev
>
>
>
>
>
> _______________________________________________
> discuss mailing list discuss(a)mpich.org
> To manage subscription options or unsubscribe:
> https://lists.mpich.org/mailman/listinfo/discuss
>
>
>
> _______________________________________________
> discuss mailing list discuss(a)mpich.org
> To manage subscription options or unsubscribe:
> https://lists.mpich.org/mailman/listinfo/discuss
>
>
>
>
>
>
>
>
> _______________________________________________
> discuss mailing list discuss(a)mpich.org
> To manage subscription options or unsubscribe:
> https://lists.mpich.org/mailman/listinfo/discuss
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> _______________________________________________
> discuss mailing list discuss(a)mpich.org
> To manage subscription options or unsubscribe:
> https://lists.mpich.org/mailman/listinfo/discuss
>
On 5/30/17, 10:19 PM, "sanjeev s" <snjv.workmail(a)gmail.com> wrote:
> Hi,
> I have added the detailed use case..
> > I did not follow what were you trying to do here. Can you be more specific?
> Suppose I have an application which accepts some request from client and do
> the MPI job on request arrival(lazy load of mpi lib). Now I started this
> application through mpiexec on 4 machines.
> mpiexec will start my application on 4 machines not MPI jobs. On request
> arrival I will distribute MPI jobs to this cluster after doing some processing
> in my application on master node.(1 of out of 4 I will designate as master
> node). Now I want to add one more machine( having my application) to this
> cluster, without stopping my already running applications. My master process
> should be able to see this 5th machine and distribute the task. Is there any
> way to achieve this?
Is this "application" an MPI program? If so, there are two options. 1. Starting
the MPI process on the 5th machine and have it connect to your existing
processes (with MPI_Comm_connect/MPI_Comm_accept). 2. Letting the existing
processes spawn new processes on the new machine (with MPI_Comm_spawn). You can
check out the book "Using Advanced MPI" for details and examples. If the
aforementioned application is not an MPI program, then what you are trying to
do is beyond the scope of MPI.
> > Also, When I took the size(number of instance for that comm), I am not
> > getting the count for client instance. To distribute the task, I need to have
> > additional logic to handle this case in my application.
> Can you be more specific about which comm you were referring to?
> I am referring to MPI_COMM_WORLD. Is there any resize kind of api which will
> give me how many jobs are there on this comm after doing one accept connection?
MPI_COMM_WORLD is created during MPI_Init. It does not change when a new
process group is connected. The communicator that accepts the connection will
give you an intercommunicator which allows the accepting processes to talk to
the connecting processes. You can merge this intercommunicator to a
intracommunicator that contains all the processes.
> Hope this helps in understanding the problem.
> Regards
> Sanjeev
Yanfei Guo
On Mon, May 29, 2017 at 8:48 AM, sanjeev s
<snjv.workmail(a)gmail.com> wrote:
Hi,
Thanks for the reply. I have given the detailed use case below.
Regards
Sanjeev
On Sat, May 27, 2017 at 2:30 AM, Guo, Yanfei
<yguo(a)anl.gov> wrote:
Hi Sanjeev,
Please see the inline comments below.
Yanfei Guo
Postdoctoral Researcher
MCS Division, ANL
On 5/26/17, 10:40 AM, "sanjeev s" <snjv.workmail(a)gmail.com> wrote:
> Hi,
> In dynamic process, I read about two models: Client server and parent child.
> Client Server : We need to have dedicated threads each for client and server. Now considering all instances same , we will end up doing lot of thread creation apart from our application worker threads.
I assume you are referring to the connect/accept model by client/server. In that case, you may need one thread on the server side to handle the incoming connection because the `MPI_Comm_accept` call
is blocking. A dedicated thread is not necessary in the client.
It is your application’s job to decide who is the server.
Yes I am referring to same connect/accept model. I don't want to put this logic in our application. I want some external process manager ( like Hydra) which can handle this form me .Please see below for detail use case.
> Moreover when 1 instance (app) goes down, we want
that instance to come up without doing much manual work. We don't want to club this logic in our application.
I did not follow what were you trying to do here.
Can you be more specific?
Suppose I have an application which accepts some request from client and do the MPI job on request arrival(lazy load of mpi lib). Now I started this application through mpiexec on 4 machines.
mpiexec will start my application on 4 machines not MPI jobs. On request arrival I will distribute MPI jobs to this cluster after doing some processing in my application on master node.(1 of out of 4 I will designate as master node). Now I
want to add one more machine( having my application) to this cluster, without stopping my already running applications. My master process should be able to see this 5th machine and distribute the task. Is there any way to achieve this?
> Also, When I took the size(number of instance for that comm), I am not getting the count for client instance. To distribute the task, I need to have additional logic to handle this case in my application.
Can you be more specific about which comm you were referring to?
I am referring to MPI_COMM_WORLD. Is there any resize kind of api which will give me how many jobs are there on this comm after doing one accept connection?
> 2) Parent child: Suppose we have started 4 instance on 4 different machines. Now we need to add another server. I don't think parent child/ client server is good option in this case.
> We don't want to build process management capabilities in our application. We are looking for process management in MPI itself (e.g in Hydra )so that we can leverage on that.
> Please correct me if I am missing something in my understanding of Dynamic model.
Regards
Sanjeev Sinha
On Fri, May 26, 2017 at 8:46 PM, Halim Amer
<aamer(a)anl.gov> wrote:
Sanjeev,
> More precisely my requirement is suppose I started 4 instances of my
> application. Now I want to add one more instance dynamically to this set
From my understanding, dynamic processes would work fine for this case. Could you elaborate on why the dynamic process model is not sufficient for your needs?
Halim
www.mcs.anl.gov/~aamer <http://www.mcs.anl.gov/~aamer> <http://www.mcs.anl.gov/~aamer>
On 5/26/17 9:11 AM, sanjeev s wrote:
Hi mpich,
I have a requirement where in we need to add start stop application
instances on the fly before starting a job.Is there any mpich service
available. I looked through dynamic process model, but its not sufficing
our need.
More precisely my requirement is suppose I started 4 instances of my
application. Now I want to add one more instance dynamically to this set
Is there any tool which MPICH supports for fault tolerance behavior?
Thanks
Sanjeev
_______________________________________________
discuss mailing list discuss(a)mpich.org
To manage subscription options or unsubscribe:
https://lists.mpich.org/mailman/listinfo/discuss
_______________________________________________
discuss mailing list discuss(a)mpich.org
To manage subscription options or unsubscribe:
https://lists.mpich.org/mailman/listinfo/discuss
_______________________________________________
discuss mailing list discuss(a)mpich.org
To manage subscription options or unsubscribe:
https://lists.mpich.org/mailman/listinfo/discuss
_______________________________________________
discuss mailing list discuss(a)mpich.org
To manage subscription options or unsubscribe:
https://lists.mpich.org/mailman/listinfo/discuss
