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!).
http://www.fujitsu.com/global/news/publications/periodicals/fstj/archives/vol48-3.html Rayson ================================================== Open Grid Scheduler - The Official Open Source Grid Engine http://gridscheduler.sourceforge.net/ Scalable Cloud HPC: 10,000-node OGS/GE Amazon EC2 cluster http://blogs.scalablelogic.com/2012/11/running-10000-node-grid-engine-cluster.html On Thu, Sep 20, 2012 at 6:46 AM, Ralph Castain <r...@open-mpi.org> wrote: > 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 <raysonlo...@gmail.com> wrote: > >> 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 >> >> ================================================== >> Open Grid Scheduler - The Official Open Source Grid Engine >> http://gridscheduler.sourceforge.net/ >> >> >> On Fri, Nov 18, 2011 at 5:32 AM, George Bosilca <bosi...@eecs.utk.edu> wrote: >>> 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 (https://svn.open-mpi.org/trac/ompi/ticket/2916). >>> >>> Thanks, >>> george. >>> >>> >>> On Nov 14, 2011, at 02:27 , Y.MATSUMOTO wrote: >>> >>>> 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: The type of sending data is contiguous and derived type. >>>> b: Either or both of MPI_LB and MPI_UB is used in the data type. >>>> c: The size of sending data is smaller than extent(Data type has gap). >>>> d: Send-count is bigger than 1. >>>> e: Total size of data is bigger than "eager limit" >>>> >>>> This problem occurs in attachment C program. >>>> >>>> An incorrect-address accessing occurs >>>> because an unintended value of "done" inputs and >>>> the value of "max_allowd" becomes minus >>>> in the following place in "ompi/datatype/datatype_pack.c(in version >>>> 1.4.3)". >>>> >>>> >>>> (ompi/datatype/datatype_pack.c) >>>> 188 packed_buffer = (unsigned char *) iov[iov_count].iov_base; >>>> 189 done = pConv->bConverted - i * pData->size; /* partial >>>> data from last pack */ >>>> 190 if( done != 0 ) { /* still some data to copy from the >>>> last time */ >>>> 191 done = pData->size - done; >>>> 192 OMPI_DDT_SAFEGUARD_POINTER( user_memory, done, >>>> pConv->pBaseBuf, pData, pConv->count ); >>>> 193 MEMCPY_CSUM( packed_buffer, user_memory, done, pConv ); >>>> 194 packed_buffer += done; >>>> 195 max_allowed -= done; >>>> 196 total_bytes_converted += done; >>>> 197 user_memory += (extent - pData->size + done); >>>> 198 } >>>> >>>> This program assumes "done" as the size of partial data from last pack. >>>> However, when the program crashes, "done" equals the sum of all >>>> transmitted data size. >>>> It makes "max_allowed" to be a negative value. >>>> >>>> We modified the code as following and it passed our test suite. >>>> But we are not sure this fix is correct. Can anyone review this fix? >>>> Patch (against Open MPI 1.4 branch) is attached to this mail. >>>> >>>> - if( done != 0 ) { /* still some data to copy from the last >>>> time */ >>>> + if( (done + max_allowed) >= pData->size ) { /* still some >>>> data to copy from the last time */ >>>> >>>> Best regards, >>>> >>>> Yuki MATSUMOTO >>>> MPI development team, >>>> Fujitsu >>>> >>>> (2011/06/28 10:58), Takahiro Kawashima wrote: >>>>> 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 MPI >>>>> library. We, Fujitsu, are pleased to announce that, and also have special >>>>> thanks to Open MPI community. >>>>> We are sorry to be late announce! >>>>> >>>>> Our MPI library is based on Open MPI 1.4 series, and has a new point- >>>>> to-point component (BTL) and new topology-aware collective communication >>>>> algorithms (COLL). Also, it is adapted to our runtime environment (ESS, >>>>> PLM, GRPCOMM etc). >>>>> >>>>> K computer connects 68,544 nodes by our custom interconnect. >>>>> Its runtime environment is our proprietary one. So we don't use orted. >>>>> We cannot tell start-up time yet because of disclosure restriction, sorry. >>>>> >>>>> We are surprised by the extensibility of Open MPI, and have proved that >>>>> Open MPI is scalable to 68,000 processes level! We feel pleasure to >>>>> utilize such a great open-source software. >>>>> >>>>> We cannot tell detail of our technology yet because of our contract >>>>> with RIKEN AICS, however, we will plan to feedback of our improvements >>>>> and bug fixes. We can contribute some bug fixes soon, however, for >>>>> contribution of our improvements will be next year with Open MPI >>>>> agreement. >>>>> >>>>> Best regards, >>>>> >>>>> MPI development team, >>>>> Fujitsu >>>>> >>>>> >>>>>> 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 that -- does anyone know if that's true?) >>>>>>> >>>>>>> >>>> Open MPI based: >>>>>>>> >>>>>>>>>>> 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 Standard, Open Source, Multi-Platform including PC Cluster. >>>>>>>> * Adding extension to Open MPI for "Tofu" interconnect >>>>>>>> >>>>>>>> Rayson >>>>>>>> http://blogs.scalablelogic.com/ >> >> _______________________________________________ >> devel mailing list >> de...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/devel > > > _______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel
