John and Martijn,
On 11/30/15 7:57 PM, john Matlock wrote:
> As I said earlier, it has been a long time since I worked with MPI (1991 to
> be exact) so I am not quite understanding your application or the software
> topology. Let me ask a few more questions. It seems you say that a
> request
2015-11-30 0:56 GMT+03:00 Martijn Slouter :
> Hello John,
> as far as I know, all processes are equivalent, although the one with
> rank 0 is usually used for logging unless each process has to
> contribute its own logging messages.
>
> I am using the openmpi MPI software
Am 29.11.2015 um 19:24 schrieb Martijn Slouter:
Thanks for your reply, comments below:
...
Any suggestion how I can accomplish the configuration, if I start
tomcat with the MPI web application using "mpirun -n 2 java ..." so
that only the first MPI process opens the tomcat communication ports,
As I said earlier, it has been a long time since I worked with MPI (1991 to
be exact) so I am not quite understanding your application or the software
topology. Let me ask a few more questions. It seems you say that a
request for processing comes in, the task it split among many hosts using
MPI,
It has been a lot of years since I worked with MPI, but IIRC one "host" has
to be the master (usually called mpirun or mpiexec) that distributes the
tasks to the "dependent hosts" and then collects the processed results. If
this is true, then using one machine as a dedicated front end makes sense
Hello John,
as far as I know, all processes are equivalent, although the one with
rank 0 is usually used for logging unless each process has to
contribute its own logging messages.
I am using the openmpi MPI software as basis with business logic
written in C and a JNI interface to make it
Thanks for your reply, comments below:
On Fri, Nov 27, 2015 at 10:15 AM, Konstantin Kolinko
wrote:
> What is your goal, your expectation of Tomcat? What these n instances
> should do that 1 instance cannot?
They are running cpu-intensive calculations on distributed hosts
Hi Konstantin,
-Original Message-
From: Konstantin Kolinko [mailto:knst.koli...@gmail.com]
Sent: 27 November 2015 09:15
To: Tomcat Users List <users@tomcat.apache.org>
Subject: Re: Can tomcat serve MPI (parallel) applications?
2015-11-26 23:18 GMT+03:00 Martijn Slouter <ma
2015-11-26 23:18 GMT+03:00 Martijn Slouter :
> Hello,
> I am looking for a solution for a tomcat container, which is supposed to
> serve a web application, which is using MPI (openmpi) internally. (The
> servlet is making JNI calls to C library functions. I have validated
Hello,
I am looking for a solution for a tomcat container, which is supposed to
serve a web application, which is using MPI (openmpi) internally. (The
servlet is making JNI calls to C library functions. I have validated that
this Java-MPI connection runs without problems when NOT using tomcat.)
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