mpi
What’s Next for MPI?
MPI-3 has been out for over a year and a half. MPICH supports all of the mandatory MPI-3 behavior and some of its optional semantics. Open MPI supports all of MPI-3 except the new one-sided semantics. New functionality is becoming mature in both, and that maturity is trickling down to the impleme…
Open MPI 1.7.4 released!
It took us longer than we intended, but we finally released Open MPI v1.7.4. Woo hoo! (we got nice coverage from El Reg, too) This is a monster release; it represents hundreds (thousands? millions?) of person-hours of work. Consider this a ginormous “thank you!” to the entire Open MP…
More Network Locality (Netloc) progress
We announced the Network locality project at SC’13, and generated a LOT of interest (far more than I even anticipated!). As a refresher, here’s a link to a a blog entry we wrote about Netloc back in November. There is still much work to be done; we’re actively continuing work in m…
InsideHPC podcast: MPI collaboration with OpenFabrics
In my last blog post, I described a new collaboration between the MPI community and the OpenFabrics verbs community. The collaboration started with the OpenFrameworks group asking the MPI community to list its requirements for a lower layer network API to the OpenFabrics OpenFrameworks working group…
A fun thing happened on the way to the OpenFrameworks discussion today…
A few months ago, Sean Hefty from Intel started an effort to design a new low-level network API to replace libibverbs. That is, it’s not libibverbs 2.0 — it’s a new API that aims to both expand the scope of what libibverbs did, and also to address many of its much-criticized shortc…
Call for Papers: EuroMPI/Asia 2014
The 21st European MPI Users’ Group Meeting, EuroMPI/AISA 2014, will be held in Kyoto, Japan, 9th – 12th September, 2014. Background and topics EuroMPI is the preeminent meeting for users, developers and researchers to interact and discuss new developments and applications of message-pass…
MPI_FESTIVUS(3)
NAME MPI_Festivus – An MPI function for the rest of us…
Call for Workshops: EuroMPI/Asia 2014
The 21st European MPI Users’ Group Meeting, EuroMPI/AISA 2014, will be held in Kyoto, Japan, 9th – 12th September, 2014. In addition to the main conference’s technical program, EuroMPI/ASIA 2014 is soliciting proposals for one-day or half-day workshops to be held in conjunction wit…
Open MPI: Binding to core by default
After years of discussion, the upcoming release of Open MPI 1.7.4 will change how processes are laid out (“mapped”) and bound by default. Here’s the specifics: If the number of processes is <= 2, processes will be mapped by core If the number of processes is > 2, processes…