Open MPI User's Mailing List Archives

Subject: Re: [OMPI users] How does OpenMPI decided to use which algorithm inMPI_Bcast????????????????
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2009-09-17 10:13:01

• Next message: Jeff Squyres: "Re: [OMPI users] OpenMPI much slower than Mpich2"
• Previous message: Jeff Squyres: "Re: [OMPI users] Multi-threading with OpenMPI ?"
• In reply to: shan axida: "[OMPI users] How does OpenMPI decided to use which algorithm in MPI_Bcast????????????????"
• Next in thread: Jayanta Roy: "Re: [OMPI users] explicit routing for multiple network interfaces"

Search through the mailing list archives -- this question has been
discussed a few times.

On Sep 3, 2009, at 2:03 AM, shan axida wrote:

> Hi,
> I had a glance at OpenMPI source codes and there are several
> algorithms for MPI_Bcast function.
> My question is how is the algorithm decided to use in a given
> MPI_Bcast call? message size?
> Anyone give me little detailed information for this question?
>
> Thanks a lot.
>
> Axida
>
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users

-- 
Jeff Squyres
jsquyres_at_[hidden]

• Next message: Jeff Squyres: "Re: [OMPI users] OpenMPI much slower than Mpich2"
• Previous message: Jeff Squyres: "Re: [OMPI users] Multi-threading with OpenMPI ?"
• In reply to: shan axida: "[OMPI users] How does OpenMPI decided to use which algorithm in MPI_Bcast????????????????"
• Next in thread: Jayanta Roy: "Re: [OMPI users] explicit routing for multiple network interfaces"