High Performance Computing Networking

DEFUNCT – MPI_BCAST: Musings, development news, and other tidbits

To be deactivated end FY19

MPI Sessions: a proposal for the MPI Forum

MPI Sessions: a proposal for the MPI Forum

Slides from Open MPI SC'15 SotU and MPI Forum BOFs

Slides from Open MPI SC'15 SotU and MPI Forum BOFs

It's that time again! SC'15

It's that time again! SC'15

More crazy MPI ideas: Fault detection and recovery

I had a good conversation with an ISV yesterday who makes a popular MPI-based simulation application.  One of the things I like to do in these kinds of conversations is ask the ISV engineers two questions: What new features do you want from the MPI implementations that you use? What new features or changes do you want […]

Libfabric: Cisco’s journey, playing well with MPI

In the previous blog entry, I shared the slides of one of the mini-talks that I gave at EuroMPI 2015 in Bordeaux, France (and don’t forget to start planning for EuroMPI 2016 in Edinburgh, Scottland). The second mini-talk I gave was twofold in itself: I discussed Cisco’s journey from the Verbs API to the Libfabric API, and […]

Crazy ideas to revamp MPI_INIT and MPI_FINALIZE

I recently had the pleasure of attending EuroMPI 2015, hosted by INRIA in Bordeaux, France (…hey, you should attend EuroMPI 2016 in Edinburgh, Scottland!). I gave two mini-talks during my speaking slot, the first of which was entitled: Crazy ideas about revamping MPI_INIT and MPI_FINALIZE.

New life for C++ in MPI

I recently received an interesting email from Heiko Bauke about a new C++-based message-passing library that he is working on called MPL. His library aims to make a simple-to-use library that exploits the features available in modern C++ compliers — it’s not a simple 1:1 mapping of C-to-C++ bindings like the MPI 2.x C++ bindings were.

MPI-3.1 books now available in hardcover

Similar to previous versions of the standard, the MPI-3.1 standard is now available in hardcover. Even though I have a copy of the MPI-3.1 PDF for quick/easy reference on my laptop, I find something intangibly inherently useful (and comforting?) in having a paper copy of the standard to thumb through. The books have been (literally) […]

Libfabric paper at IEEE Hot Interconnects

Later today, Sean Hefty will present a paper about the OpenFabrics Interfaces (a.k.a. “libfabric“) at the 2015 IEEE Hot Interconnects conference. Libfabric is the next-generation Linux library being developed by an open source consortium of vendors and academic researchers that implements the OpenFabrics Interfaces, specifically designed to expose application-focused networking functionality to high performance applications (e.g., MPI, PGAS, […]

MPI outside of C and Fortran (part 2)

In my previous blog entry, I answered a user question about how MPI defines its global constants, specifically in the context of interactions with other languages. I went beyond that answer, and also explained why MPI does not define an ABI. In this entry, I’ll go into the “how does MPI interact with other languages?” part […]

MPI outside of C and Fortran

Recently, a reader asked me about how MPI defines its global constants. More specifically, the user was asking how MPI defines its interactions with languages other than C and Fortran (i.e., the two officially-supported language bindings). This is a good question, and has implications on both the MPI standards documents and various MPI implementations.  Let’s dive […]

EuroMPI 2015 Call for participation

EuroMPI 2015 is presented in cooperation with ACM and SIGHPC in Bordeaux France, 21st – 23rd September, 2015. EuroMPI is the prime annual meeting for researchers, developers, and students in message-passing parallel computing with MPI and related paradigms. Deadline of early registration is Sept 1st, 2015