> On Apr 25, 2016, at 11:33 , Dave Love wrote:
>
> George Bosilca writes:
>
>> Dave,
>>
>> You are absolutely right, the parameters are now 6-7 years old,
>> gathered on interconnects long gone. Moreover, several discussions in
>> this mailing list indicated that they do not match current net
George Bosilca writes:
> Dave,
>
> You are absolutely right, the parameters are now 6-7 years old,
> gathered on interconnects long gone. Moreover, several discussions in
> this mailing list indicated that they do not match current network
> capabilities.
>
> I have recently reshuffled the tuned
Dave,
You are absolutely right, the parameters are now 6-7 years old, gathered on
interconnects long gone. Moreover, several discussions in this mailing list
indicated that they do not match current network capabilities.
I have recently reshuffled the tuned module to move all the algorithms in
George Bosilca writes:
> Matthieu,
>
> If you are talking about how Open MPI selects between different broadcast
> algorithms you might want to read [1]. We have implemented a dozen
> different broadcast algorithms and have run a set of tests to measure their
> performance.
I'd been meaning to
-
> *From:* users [users-boun...@open-mpi.org] on behalf of George Bosilca [
> bosi...@icl.utk.edu]
> *Sent:* Tuesday, April 19, 2016 2:03 PM
> *To:* Open MPI Users
> *Subject:* Re: [OMPI users] MPI_Bcast implementations in OpenMPI
>
> Matthieu,
>
> If you are talkin
Users
Subject: Re: [OMPI users] MPI_Bcast implementations in OpenMPI
Matthieu,
If you are talking about how Open MPI selects between different broadcast
algorithms you might want to read [1]. We have implemented a dozen different
broadcast algorithms and have run a set of tests to measure their
Matthieu,
If you are talking about how Open MPI selects between different broadcast
algorithms you might want to read [1]. We have implemented a dozen
different broadcast algorithms and have run a set of tests to measure their
performance. We then used a quad tree clasiffication algorithm to minim
On Apr 15, 2016, at 9:18 AM, Dorier, Matthieu wrote:
>
> I'd like to know how OpenMPI implements MPI_Bcast. And if different
> implementations are provided, how one is selected.
This is a fairly complicated topic. This old paper is the foundation for how
Open MPI works (it's a bit different t
Hi,
I'd like to know how OpenMPI implements MPI_Bcast. And if different
implementations are provided, how one is selected.
Thanks,
Matthieu Dorier
