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> Von: "Pradeep Jha"
> An: "Open MPI Users"
> Gesendet: Freitag, 10. Januar 2014 10:23:40
> Betreff: Re: [OMPI users] Calling a v
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> - Ursprüngliche Mail -
> Von: "Pradeep Jha"
> An: "Open MPI Users"
> Gesendet: F
- Ursprüngliche Mail -
Von: "Pradeep Jha"
An: "Open MPI Users"
Gesendet: Freitag, 10. Januar 2014 10:23:40
Betreff: Re: [OMPI users] Calling a variable from another processor
Thanks for your responses. I am still not able to figure it out. I will further
simply
Thanks for your responses. I am still not able to figure it out. I will
further simply my problem statement. Can someone please help me with a
fortran90 code for that.
1) I have N processors each with an array A of size S
2) On any random processor (say rank X), I calculate the two integer
values,
One sided is quite simple to understand. It is like file io. You read/write
(get/put) to a memory object. If you want to make it hard to screw up, use
passive target bss wrap you calls in lock/unlock so every operation is globally
visible where it's called.
I've never deadlocked RMA while p2p
MPI one-sided stuff is actually pretty complicated; I wouldn't suggest it for a
beginner (I don't even recommend it for many MPI experts ;-) ).
Why not look at the MPI_SOURCE in the status that you got back from the
MPI_RECV? In fortran, it would look something like (typed off the top of my
he
Hello,
I suggest you have a look onto the MPI one-sided functionality (Section 11 of
the MPI Spec 3.0).
Create a window to allow the other processes to access the arrays A directly
via MPI_Get/MPI_Put.
Be aware of synchronization which you have to implement via MPI_Win_fence or
manual locking.
