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
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
: [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
Wait(&requ2, &status2);
cout << "SLAVE: " << myid << " recvs from "<< nprocs-1 << " rMSG.flag = " <<
rMSG.flag << endl;
MPI_Send(&rMSG, MSG_QUERY_SIZE, MPI_CHAR, right, 222, MPI_COMM_WORLD);
//MPI_Isend(&a
OMPI users] Is there an "flush()"-like function in MPI?
guosong wrote:
Thanks for reply. One more thing I would like to know is that since the message
has already left the sender, how to make sure that the receiver side receives
this message? From the output of my program, it seems th
@lists.open-mpi.org
Date: Sat, 26 Sep 2009 08:42:35 -0700
From: eugene@sun.com
To: us...@open-mpi.org
Subject: Re: [OMPI users] Is there an "flush()"-like function in MPI?
guosong wrote:
Hi all,
I am wondering if there is an flush()-like function in MPI. I saw the output of
my pr
Hi all,
I am wondering if there is an flush()-like function in MPI. I saw the output of
my program. One sent something but some other process did not receive it, just
sitting there waiting. I used MPI_Isend for sending and MPI_Recv for receiving.
Is it possible the message was lost or the mess
cv?
>
> 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 w
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
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
Thanks. I thought those threads will not interfere with each other since they
have no common variables except std IO.
List-Post: users@lists.open-mpi.org
Date: Thu, 3 Sep 2009 09:01:28 -0700
From: eugene@sun.com
To: us...@open-mpi.org
Subject: Re: [OMPI users] Help!
guosong wrote:
I
I am new to open MPI
I have a simple program below:
#include
#include
#include "mpi.h"
using namespace std;
void* backID(void* arg)
{
int myid;
MPI_Comm_rank(MPI_COMM_WORLD, &myid);
cout << myid << " create background ID" << endl;
int v;
MPI_Status status;
int m;
int x, y;
int count
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