thanks
I know that.
MPI_irecv() ;
do other works;
MPI_wait();
But, my message receiver is much slower than sender.
when the sender is doing its local works, the sender has sent out their
messages. but at this time, the sender is very busy doing its local work and
cannot post MPI_irecv to get
I have used the wrapper compilers ($FC=mpif90 and $CC=mpicc), even then i
was getting these errors. Anyway I used -lmpi in place of -lmpich and the
build was successful. Thanks a lot for your help :)
Cheers,
Srinivas
On Fri, Jun 25, 2010 at 5:19 PM, Jeff Squyres wrote:
> On Jun 25, 2010, at 4:1
Hi,
Am 28.06.2010 um 08:10 schrieb Srinivas Gopal:
I have used the wrapper compilers ($FC=mpif90 and $CC=mpicc), even
then i was getting these errors. Anyway I used -lmpi in place of -
lmpich and the build was successful. Thanks a lot for your help :)
I saw makefiles, where the compilers (i
Hi all,
I observed MPI_ISEND & IRECV performing little better than persistenent
communication; although I was hoping/desiring the opposite case??
What is the be the best way of using MPI persistent communication in an
iterative/repetative kind of code about calling MPI_Free(); Should we call
MPI
On Jun 28, 2010, at 4:03 AM, amjad ali wrote:
> (1)
> Call this subroutines 1000 times
> =
> call MPI_RECV_Init()
> call MPI_Send_Init()
> call MPI_Startall()
> call MPI_Free()
> =
>
> (2)
Hi Jeff S.
Thank you very much for your reply.
I am still feeling some confusion. Please guide.
The idea is to do this:
>
>MPI_Recv_init()
>MPI_Send_init()
>for (i = 0; i < 1000; ++i) {
>MPI_Startall()
>/* do whatever */
>MPI_Waitall()
>}
>for (i = 0;
amjad ali wrote:
Hi Jeff S.
Thank you very much for your reply.
I am still feeling some confusion. Please guide.
The
idea is to do this:
MPI_Recv_init()
MPI_Send_init()
for (i = 0; i < 1000; ++i) {
MPI_Startall()
/* do whatever */
MPI_Waitall
Use MPI_Iprobe. It's a nonblocking probe that allow you to see if a message
is coming. So in your receiver code you just periodically probe to see if
messages are coming your way.
On Sun, Jun 27, 2010 at 9:11 PM, Jack Bryan wrote:
> thanks
>
> I know that.
>
> MPI_irecv() ;
>
> do other works
Hi,
I am developing a runtime detector for noncrashing
bugs in MPI applications. It is capable of collecting
MPI communication and diagnose if a node is abnormal
based on its communication with other nodes.
Therefore, it is highly desirable to have a couple of
noncrashing bugs from real-life
>
> You would break the MPI_Irecv and MPI_Isend calls up into two parts:
> MPI_Send_init and MPI_Recv_init in the first part and MPI_Start[all] in the
> second part. The first part needs to be moved out of the subroutine... at
> least outside of the loop in sub1() and maybe even outside the
> 1000
amjad ali wrote:
You would break the MPI_Irecv
and MPI_Isend calls up into two parts:
MPI_Send_init and MPI_Recv_init in the first part and MPI_Start[all] in
the second part. The first part needs to be moved out of the
subroutine... at least outside of the loop in sub1() and maybe
Dear E. Loh.
**
>
>
> Another is whether you can overlap communications and computation. This
> does not require persistent channels, but only nonblocking communications
> (MPI_Isend/MPI_Irecv). Again, there are no MPI guarantees here, so you may
> have to break your computation up and insert MP
I guess that if the receiver want to ensure that the sender should send data
only when the receiver will be able/free to receive data,
then use MPI-Barriers.
On Mon, Jun 28, 2010 at 12:53 PM, David Zhang wrote:
> Use MPI_Iprobe. It's a nonblocking probe that allow you to see if a
> message i
amjad ali wrote:
Dear E. Loh.
Another is whether you can
overlap communications and computation.
This does not require persistent channels, but only nonblocking
communications (MPI_Isend/MPI_Irecv). Again, there are no MPI
guarantees here, so you may have to break your computatio
Dear All,
I am using Open MPI : mpirun (Open MPI) 1.3.4
I got error:
terminate called after throwing an instance of
'boost::exception_detail::clone_impl
>' what(): MPI_Test: MPI_ERR_TRUNCATE: message truncated
I installed boost MPI library and compile and run the program by openMPI. It
see
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