It was pointed out to me that in my last blog post (Don’t leak MPI_Requests), I failed to mention the MPI_REQUEST_FREE function. True enough — I did fail to mention it. But I did so on purpose, because MPI_REQUEST_FREE is evil. Let me explain…
With the Mayan apocalypse safely behind us, now we can now safely discuss MPI again. An MPI application developer came to me the other day with a potential bug in Open MPI: he noticed that Open MPI was consuming vast amounts of memory such that trying to allocate memory from his application failed. Ouch! It turns out, […]
Today’s guest blog entry comes from Daniel Holmes, an Applications Developers at the EPCC. I met Jeff at EuroMPI in September, and he has invited me to write a few words on my experience of developing an MPI library. My PhD involved building a message passing library using C#; not accessing an existing MPI library […]
It’s that time of year again — time to start preparing for Euro MPI 2013! Next year, we’ll be heading to Madrid, Spain September 15-18. Here’s a snipit from the call for papers: Topics of interest include, but are not limited to: MPI implementation issues and improvements Extensions to and shortcomings of MPI Tools […]
My team demonstrated our new ultra-low latency Ethernet solution in the Cisco booth at SC this past week (it was so busy that I didn’t get to post this until it was all over!). The short version is that we have implemented operating system bypass and NIC hardware offload via the Linux OpenFabrics verbs API […]
The MPICH folks have released an RC candidate for MPICH 3.0: A new preview release of MPICH, 3.0rc1, is now available for download. The primary focus of this release is to provide full support for the MPI-3 standard. Other smaller features including support for ARM v7 native atomics are also included.
The MPI-3.0 standard is now available in hardcover (it’s green!). The book is available for cost by Dr. Rolf Rabenseifner at HLRS; no profit is being made by these sales. Here’s an excerpt from Rolf’s original announcement: As a service (at costs) for users of the Message Passing Interface, HLRS has printed the new Standard, […]
Going to Salt Lake City for Supercomputing 2012 next week? So are we! Be sure to drop by and see us in the Cisco booth (#2517). I’ll be there, demonstrating and talking about our latest developments in ultra low latency Ethernet (hint: it includes 250ns port-to-port Ethernet switch latency and our latest MPI/OS-bypass technology on the […]
