Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

I've confirmed. Thanks. Takahiro Kawashima, MPI development team, Fujitsu > Done -- thank you! > > On Jan 11, 2013, at 3:52 AM, "Kawashima, Takahiro" > wrote: > > > Hi Open MPI core members and Rayson, > > > > I've confirmed to the authors and created the bibtex

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Hi Open MPI core members and Rayson, I've confirmed to the authors and created the bibtex reference. Could you make a page in the "Open MPI Publications" page that links to Fujitsu's PDF file? The attached file contains information of title, authors, abstract, link URL, and bibtex reference.

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Hi, Sorry for not replying sooner. I'm taliking with the authors (they are not in this list) and will request linking the PDF soon if they allowed. Takahiro Kawashima, MPI development team, Fujitsu > Our policy so far was that adding a paper to the list of publication on the > Open MPI website

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Our policy so far was that adding a paper to the list of publication on the Open MPI website was a discretionary action at the authors' request. I don't see any compelling reason to change. Moreover, Fujitsu being a contributor of the Open MPI community, there is no obstacle of adding a link to

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Hi Ralph, Since the whole journal is available online, and is reachable by Google, I don't believe we can get into copyright issues by providing a link to it (but then, I also know that there are countries that have more crazy web page linking rules!).

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

I'm unaware of any formal criteria. The papers currently located there are those written by members of the OMPI community, but we can certainly link to something written by someone else, so long as we don't get into copyright issues. On Sep 19, 2012, at 11:57 PM, Rayson Ho

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

I found this paper recently, "MPI Library and Low-Level Communication on the K computer", available at: http://www.fujitsu.com/downloads/MAG/vol48-3/paper11.pdf What are the criteria for adding papers to the "Open MPI Publications" page? Rayson

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Dear Yuki and Takahiro, Thanks for the bug report and for the patch. I pushed a [nearly identical] patch in the trunk in https://svn.open-mpi.org/trac/ompi/changeset/25488. A special version for the 1.4 has been prepared and has been attached to the ticket #2916

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 14/11/11 21:27, Y.MATSUMOTO wrote: > I'm a member of MPI library development team in Fujitsu, > Takahiro Kawashima, who sent mail before, is my colleague. > We start to feed back. First of all I'd like to say congratulations on breaking 10PF, and

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Dear Open MPI community, I'm a member of MPI library development team in Fujitsu, Takahiro Kawashima, who sent mail before, is my colleague. We start to feed back. First, we fixed about MPI_LB/MPI_UB and data packing problem. Program crashes when it meets all of the following conditions: a:

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

On Jul 3, 2011, at 8:40 PM, Kawashima wrote: >> Does your llp sed path order MPI matching ordering? Eg if some prior isend >> is already queued, could the llp send overtake it? > > Yes, LLP send may overtake queued isend. > But we use correct PML send_sequence. So the LLP message is queued as

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Hi Jeff, > Does your llp sed path order MPI matching ordering? Eg if some prior isend > is already queued, could the llp send overtake it? Yes, LLP send may overtake queued isend. But we use correct PML send_sequence. So the LLP message is queued as unexpected message on receiver side, and I

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Does your llp sed path order MPI matching ordering? Eg if some prior isend is already queued, could the llp send overtake it? Sent from my phone. No type good. On Jun 29, 2011, at 8:27 AM, "Kawashima" wrote: > Hi Jeff, > >>> First, we created a new BTL

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Hi Jeff, > > First, we created a new BTL component, 'tofu BTL'. It's not so special > > one but dedicated to our Tofu interconnect. But its latency was not > > enough for us. > > > > So we created a new framework, 'LLP', and its component, 'tofu LLP'. > > It bypasses request object creation in

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

On Jun 29, 2011, at 3:57 AM, Kawashima wrote: > First, we created a new BTL component, 'tofu BTL'. It's not so special > one but dedicated to our Tofu interconnect. But its latency was not > enough for us. > > So we created a new framework, 'LLP', and its component, 'tofu LLP'. > It bypasses

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Hi Sylvain, > > Also, we modified tuned COLL to implement interconnect-and-topology- > > specific bcast/allgather/alltoall/allreduce algorithm. These algorithm > > implementations also bypass PML/BML/BTL to eliminate protocol and > software > > overhead. > This seems perfectly valid to me. The

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Kawashima-san, Congratulations for your machine, this is a stunning achievement ! > Kawashima wrote : > Also, we modified tuned COLL to implement interconnect-and-topology- > specific bcast/allgather/alltoall/allreduce algorithm. These algorithm > implementations

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Hi Jeff, Ralph, and all, Thank you for your reply. RIKEN and Fujitsu will work toword 10Pflops with Open MPI continuously. Here we can explain some parts of our MPI: As page 13 of Koh Hotta's presentation shows, we extended OMPI communication layers. >

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

I echo what Ralph said -- congratulations! Let us know when you'll be ready to contribute back what you can. Thanks! On Jun 27, 2011, at 9:58 PM, Takahiro Kawashima wrote: > Dear Open MPI community, > > I'm a member of MPI library development team in Fujitsu. Shinji > Sumimoto, whose name

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Dear Open MPI community, I'm a member of MPI library development team in Fujitsu. Shinji Sumimoto, whose name appears in Jeff's blog, is one of our bosses. As Rayson and Jeff noted, K computer, world's most powerful HPC system developed by RIKEN and Fujitsu, utilizes Open MPI as a base of its

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

On Sat, Jun 25, 2011 at 9:23 PM, Jeff Squyres wrote: > I got more information: > >   http://blogs.cisco.com/performance/open-mpi-powers-8-petaflops/ That's really awesome!! SC08: "Open MPI: 10^15 Flops Can't Be Wrong" 2011: "Open MPI: 8 * 10^15 Flops Can't Be Wrong" And

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

Any info available on the launch environment used, and how long it took to start the 8Pf job? On Jun 25, 2011, at 7:23 PM, Jeff Squyres wrote: > I got more information: > > http://blogs.cisco.com/performance/open-mpi-powers-8-petaflops/ > > Short version: yes, Open MPI is used on K and was

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

I got more information: http://blogs.cisco.com/performance/open-mpi-powers-8-petaflops/ Short version: yes, Open MPI is used on K and was used to power the 8PF runs. w00t! On Jun 24, 2011, at 7:16 PM, Jeff Squyres wrote: > w00t! > > OMPI powers 8 petaflops! > (at least I'm guessing

Re: [OMPI devel] "Open MPI"-based MPI library used by K computer

w00t! OMPI powers 8 petaflops! (at least I'm guessing that -- does anyone know if that's true?) On Jun 24, 2011, at 7:03 PM, Rayson Ho wrote: > Interesting... page 11: > > http://www.fujitsu.com/downloads/TC/sc10/programming-on-k-computer.pdf > > Open MPI based: > > * Open Standard, Open

[OMPI devel] "Open MPI"-based MPI library used by K computer

Interesting... page 11: http://www.fujitsu.com/downloads/TC/sc10/programming-on-k-computer.pdf Open MPI based: * Open Standard, Open Source, Multi-Platform including PC Cluster. * Adding extension to Open MPI for "Tofu" interconnect Rayson == Grid Engine / Open Grid