Thanks.
> From: jsquy...@cisco.com
> To: us...@open-mpi.org
> Date: Mon, 28 Sep 2009 11:49:36 -0400
> Subject: Re: [OMPI users] How to create multi-thread parallel program using
> thread-safe send and recv?
>
> On Sep 28, 2009, at 11:48 AM, guosong wrote:
>
> > O
On Sep 28, 2009, at 11:48 AM, guosong wrote:
Oh, thanks. I found that mpich2/gnu supports MPI_THREAD_MULTIPLE by
default on my server. So if it supports MPI_THREAD_MULTIPLE, does it
mean that I can run the program without segmentation fault (if there
is no other bugs ^_^)
Hypothetically,
Date: Mon, 28 Sep 2009 11:28:31 -0400
> Subject: Re: [OMPI users] How to create multi-thread parallel program using
> thread-safe send and recv?
>
> On Sep 27, 2009, at 1:45 PM, guosong wrote:
>
> > Hi Loh,
> > I used MPI_Init_thread(&argc,&argv, MPI_THREAD_MULT
On Sep 27, 2009, at 1:45 PM, guosong wrote:
Hi Loh,
I used MPI_Init_thread(&argc,&argv, MPI_THREAD_MULTIPLE, &provided);
in my program and got provided = 0 which turns out to be the
MPI_THREAD_SINGLE. Does this mean that I can not use
MPI_THREAD_MULTIPLE model?
Correct.
To get Open MPI
: [OMPI users] How to create multi-thread parallel program using
thread-safe send and recv?
guosong wrote:
I used MPI_Init_thread(&argc,&argv, MPI_THREAD_MULTIPLE, &provided); in my
program and got provided = 0 which turns out to be the MPI_THREAD_SINGLE. Does
this mean that I
guosong wrote:
I
used MPI_Init_thread(&argc,&argv, MPI_THREAD_MULTIPLE,
&provided); in my program and got provided = 0 which turns out to
be the MPI_THREAD_SINGLE. Does this mean that I can not use
MPI_THREAD_MULTIPLE model?
Right. I've not done much multithreaded MPI work. Someone else on
quot; sends to "<< nprocs-1 << " sMSG.x = " <<
sMSG.x << endl;
MPI_Recv(&rMSG, MSG_QUERY_SIZE, MPI_CHAR, nprocs-1, myid, MPI_COMM_WORLD,
&status2);
//MPI_Irecv(&rMSG, MSG_QUERY_SIZE, MPI_CHAR, nprocs-1, myid, MPI_COMM_WORLD,
&requ2);
//MPI_
This is just a test example. The real project behind it needs to configure like
that.
> From: te...@chem.gu.se
> To: us...@open-mpi.org
> Date: Wed, 23 Sep 2009 09:39:22 +1000
> Subject: Re: [OMPI users] How to create multi-thread parallel program using
> thread-safe send and re
If you want all threads to communicate via MPI, and your initially
launching multiple parents, I don't really see the advantage of using
threads at all. Why not launch 12 MPI processes?
On Tue, 2009-09-22 at 10:32 -0700, Eugene Loh wrote:
> guosong wrote:
> > Thanks for responding. I used a linu
guosong wrote:
Thanks
for responding. I used a linux cluster. I think I would like to create
a model that is multithreaded and each thread can make MPI calls. I
attached test code as follow. It has two pthreads and there are MPI
calls in both of those two threads. In the main function, there
myid <<
endl;
fflush(stdout);
}
pret1 = pthread_create(&pt1, NULL, backRecv, NULL);
if(pret1 != 0)
{
cout << myid << "backRecv Thread Create Failed." << endl;
exit(1);
}
pret2 = pthread_create(&pt2, NULL, backID, NULL);
if(pret2
guosong wrote:
Hi
all,
I would like to write a multi-thread parallel program. I used pthread.
Basicly, I want to create two background threads besides the main
thread(process). For example, if I use "-np 4", the program should have
4 main processes on four processors and two background thre
Hi all,
I would like to write a multi-thread parallel program. I used pthread. Basicly,
I want to create two background threads besides the main thread(process). For
example, if I use "-np 4", the program should have 4 main processes on four
processors and two background threads for each main
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