Hi I have downloaded the developer version of source code by downloading a nightly Subversion snapshot tarball.And have installed the openmpi. Using
./configure --prefix=/usr/local make all install. But I want to install with all the development headers.So that I can write an application that can use Ompi internal headers. Thanks and Regards Pooja > On Apr 1, 2007, at 3:12 PM, Ralph Castain wrote: > >> I can't help you with the BTL question. On the others: > > Yes, you can "sorta" call BTL's directly from application programs > (are you trying to use MPI alongside other communication libraries, > and using the BTL components as a sample?), but there are issues > involved with this. > > First, you need to install Open MPI with all the development > headers. Open MPI normally only installs "mpi.h" and a small number > of other heads; installing *all* the headers will allow you to write > applications that use OMPI's internal headers (such as btl.h) while > developing outside of the Open MPI source tree. > > Second, you probably won't want to access the BTL's directly. To > make this make sense, here's how the code is organized (even if the > specific call sequence is not exactly this layered for performance/ > optimization reasons): > > MPI layer (e.g., MPI_SEND) > -> PML > -> BML > -> BTL > > You have two choices: > > 1. Go through the PML instead (this is what we do in the MPI > collectives, for example) -- but this imposes MPI semantics on > sending and receiving, which assumedly you are trying to avoid. > Check out ompi/mca/pml/pml.h. > > 2. Go through the BML instead -- the BTL Management Layer. This is > essentially a multiplexor for all the BTLs that have been > instantiated. I'm guessing that this is what you want to do > (remember that OMPI has true multi-device support; using the BML and > multiple BTLs is one of the ways that we do this). Have a look at > ompi/mca/bml/bml.h for the interface. > > There is also currently no mechanism to get the BML and BTL pointers > that were instantiated by the PML. However, if you're just doing > proof-of-concept code, you can extract these directly from the MPI > layer's global variables to see how this stuff works. > > To have full interoperability of the underlying BTLs and between > multiple upper-layer communication libraries (e.g., between OMPI and > something else) is something that we have talked about a little, but > have not done much work on. > > To see the BTL interface (just for completeness), see ompi/mca/btl/ > btl.h. > > You can probably see the pattern here... In all of Open MPI's > frameworks, the public interface is in <level>/mca/<framework>/ > <framework>.h, where <level> is one of opal, orte, or ompi, and > <framework> is the name of the framework. > >> 1. states are reported via the orte/mca/smr framework. You will see >> the >> states listed in orte/mca/smr/smr_types.h. We track both process >> and job >> states. Hopefully, the state names will be somewhat self- >> explanatory and >> indicative of the order in which they are traversed. The job states >> are set >> when *all* of the processes in the job reach the corresponding state. > > Note that these are very coarse-grained process-level states (e.g., > is a given process running or not?). It's not clear what kind of > states you were asking about -- the Open MPI code base has many > internal state machines for various message passing and other > mechanisms. > > What information are you looking for, specifically? > >> 2. I'm not sure what you mean by mapping MPI processes to "physical" >> processes, but I assume you mean how do we assign MPI ranks to >> processes on >> specific nodes. You will find that done in the orte/mca/rmaps >> framework. We >> currently only have one component in that framework - the round-robin >> implementation - that maps either by slot or by node, as indicated >> by the >> user. That code is fairly heavily commented, so you hopefully can >> understand >> what it is doing. >> >> Hope that helps! >> Ralph >> >> >> On 4/1/07 1:32 PM, "po...@cc.gatech.edu" <po...@cc.gatech.edu> wrote: >> >>> Hi >>> I am Pooja and I am working on a course project which requires me >>> -> to track the internal state changes of MPI and need me to >>> figure out >>> how does ORTE maps MPi Process to actual physical processes >>> ->Also I need to find way to get BTL transports work directly with >>> MPI >>> level calls. >>> I just want to know is this posible and if yes what procedure I >>> should >>> follow or I should look into which files (for change). >>> >>> >>> Please Help >>> >>> Thanks and Regards >>> Pooja >>> >>> _______________________________________________ >>> 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 > > > -- > Jeff Squyres > Cisco Systems > > _______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel >
