Problem solved. The program has a bug. Instead of using the status variable (array) the program uses the stat variable (scalar). Therefore there is a buffer overflow.
On Monday 14 August 2006 09:58, Sven Stork wrote: > The problem is that after the MPI_Recv call the loop > variable is set to 0, and therefore the loop doesn't stop > as supposed to be for 2 processes. > > If you use another temp. varaible as parameter the program > works. The strange thing is that temp. variable wont be changed and still > contains the origin value while the loop variable still gets changed (this > time to a value higher than 0). > > On Friday 11 August 2006 17:07, Jeff Squyres wrote: > > I'm not quite sure I understand -- does the application hang in an MPI call? > > Or is there some compiler error that is causing it to execute a DO loop > > incorrectly? > > > > > > On 8/11/06 6:25 AM, "Sven Stork" <st...@hlrs.de> wrote: > > > > > The real problem is not the -g it is the -O0 option which will be > > > automatically added by -g. If you compile with "-g -ON" for 0 < N > everythings > > > works as expected. > > > > > > Thanks, > > > Sven > > > > > > On Friday 11 August 2006 11:54, Bettina Krammer wrote: > > >> Hi, > > >> > > >> when I use the attached hello.f with Open MPI 1.1.0 and underlying Intel > > >> 9.0 or 9.1 compiler on our Xeon cluster, it is deadlocking when compiled > > >> with -g option but works without -g: > > >> > > >> =================== > > >> output with -g: > > >> > > >> $mpirun -np 2 ./hello-g > > >> > > >> My rank is 0 ! > > >> waiting for message from 1 > > >> My rank is 1 ! > > >> Greetings from process 1 ! > > >> Sending message from 1 ! > > >> Message recieved: HelloFromMexxxxxxxxx! > > >> waiting for message from 1 > > >> > > >> [...deadlock...] > > >> =================== > > >> > > >> output without -g: > > >> > > >> $mpirun -np 2 ./hello-no-g > > >> > > >> My rank is 0 ! > > >> waiting for message from 1 > > >> My rank is 1 ! > > >> Greetings from process 1 ! > > >> Sending message from 1 ! > > >> Message recieved: HelloFromMexxxxxxxxx! > > >> All done... 0 > > >> All done... 1 > > >> =================== > > >> > > >> Thanks, Bettina Krammer > > >> > > >> (The example is taken from the distribution of DDT, to be found in > > >> ddt/examples. The problem is reproducible with the simplified > > >> hello-simple.f. The deadlock occurs in the DO source... MPI_Recv(...) > > >> .... loop) > > >> =================== > > >> The config.log is not available to me. > > >> > > >> hpc43203 cacau1 219$ompi_info > > >> Open MPI: 1.1 > > >> Open MPI SVN revision: r10477 > > >> Open RTE: 1.1 > > >> Open RTE SVN revision: r10477 > > >> OPAL: 1.1 > > >> OPAL SVN revision: r10477 > > >> Prefix: /opt/OpenMPI/1.1.0/ > > >> Configured architecture: x86_64-unknown-linux-gnu > > >> Configured by: hpcraink > > >> Configured on: Mon Jul 31 12:55:30 CEST 2006 > > >> Configure host: cacau1 > > >> Built by: hpcraink > > >> Built on: Mon Jul 31 13:16:04 CEST 2006 > > >> Built host: cacau1 > > >> C bindings: yes > > >> C++ bindings: yes > > >> Fortran77 bindings: yes (all) > > >> Fortran90 bindings: yes > > >> Fortran90 bindings size: small > > >> C compiler: icc > > >> C compiler absolute: /opt/intel/compiler/9.1/cce/bin/icc > > >> C++ compiler: icpc > > >> C++ compiler absolute: /opt/intel/compiler/9.1/cce/bin/icpc > > >> Fortran77 compiler: ifc > > >> Fortran77 compiler abs: /opt/intel/compiler/9.1/fce/bin/ifc > > >> Fortran90 compiler: ifc > > >> Fortran90 compiler abs: /opt/intel/compiler/9.1/fce/bin/ifc > > >> C profiling: yes > > >> C++ profiling: yes > > >> Fortran77 profiling: yes > > >> Fortran90 profiling: yes > > >> C++ exceptions: no > > >> Thread support: posix (mpi: no, progress: no) > > >> Internal debug support: no > > >> MPI parameter check: runtime > > >> Memory profiling support: no > > >> Memory debugging support: no > > >> libltdl support: yes > > >> MCA memory: ptmalloc2 (MCA v1.0, API v1.0, Component v1.1) > > >> MCA paffinity: linux (MCA v1.0, API v1.0, Component v1.1) > > >> MCA maffinity: first_use (MCA v1.0, API v1.0, Component v1.1) > > >> MCA maffinity: libnuma (MCA v1.0, API v1.0, Component v1.1) > > >> MCA timer: linux (MCA v1.0, API v1.0, Component v1.1) > > >> MCA allocator: basic (MCA v1.0, API v1.0, Component v1.0) > > >> MCA allocator: bucket (MCA v1.0, API v1.0, Component v1.0) > > >> MCA coll: basic (MCA v1.0, API v1.0, Component v1.1) > > >> MCA coll: hierarch (MCA v1.0, API v1.0, Component v1.1) > > >> MCA coll: self (MCA v1.0, API v1.0, Component v1.1) > > >> MCA coll: sm (MCA v1.0, API v1.0, Component v1.1) > > >> MCA coll: tuned (MCA v1.0, API v1.0, Component v1.1) > > >> MCA io: romio (MCA v1.0, API v1.0, Component v1.1) > > >> MCA mpool: sm (MCA v1.0, API v1.0, Component v1.1) > > >> MCA mpool: mvapi (MCA v1.0, API v1.0, Component v1.1) > > >> MCA pml: ob1 (MCA v1.0, API v1.0, Component v1.1) > > >> MCA bml: r2 (MCA v1.0, API v1.0, Component v1.1) > > >> MCA rcache: rb (MCA v1.0, API v1.0, Component v1.1) > > >> MCA btl: self (MCA v1.0, API v1.0, Component v1.1) > > >> MCA btl: sm (MCA v1.0, API v1.0, Component v1.1) > > >> MCA btl: mvapi (MCA v1.0, API v1.0, Component v1.1) > > >> MCA btl: tcp (MCA v1.0, API v1.0, Component v1.0) > > >> MCA topo: unity (MCA v1.0, API v1.0, Component v1.1) > > >> MCA osc: pt2pt (MCA v1.0, API v1.0, Component v1.0) > > >> MCA gpr: null (MCA v1.0, API v1.0, Component v1.1) > > >> MCA gpr: proxy (MCA v1.0, API v1.0, Component v1.1) > > >> MCA gpr: replica (MCA v1.0, API v1.0, Component v1.1) > > >> MCA iof: proxy (MCA v1.0, API v1.0, Component v1.1) > > >> MCA iof: svc (MCA v1.0, API v1.0, Component v1.1) > > >> MCA ns: proxy (MCA v1.0, API v1.0, Component v1.1) > > >> MCA ns: replica (MCA v1.0, API v1.0, Component v1.1) > > >> MCA oob: tcp (MCA v1.0, API v1.0, Component v1.0) > > >> MCA ras: dash_host (MCA v1.0, API v1.0, Component v1.1) > > >> MCA ras: hostfile (MCA v1.0, API v1.0, Component v1.1) > > >> MCA ras: localhost (MCA v1.0, API v1.0, Component v1.1) > > >> MCA ras: slurm (MCA v1.0, API v1.0, Component v1.1) > > >> MCA ras: tm (MCA v1.0, API v1.0, Component v1.1) > > >> MCA rds: hostfile (MCA v1.0, API v1.0, Component v1.1) > > >> MCA rds: resfile (MCA v1.0, API v1.0, Component v1.1) > > >> MCA rmaps: round_robin (MCA v1.0, API v1.0, Component > v1.1) > > >> MCA rmgr: proxy (MCA v1.0, API v1.0, Component v1.1) > > >> MCA rmgr: urm (MCA v1.0, API v1.0, Component v1.1) > > >> MCA rml: oob (MCA v1.0, API v1.0, Component v1.1) > > >> MCA pls: fork (MCA v1.0, API v1.0, Component v1.1) > > >> MCA pls: rsh (MCA v1.0, API v1.0, Component v1.1) > > >> MCA pls: slurm (MCA v1.0, API v1.0, Component v1.1) > > >> MCA pls: tm (MCA v1.0, API v1.0, Component v1.1) > > >> MCA sds: env (MCA v1.0, API v1.0, Component v1.1) > > >> MCA sds: seed (MCA v1.0, API v1.0, Component v1.1) > > >> MCA sds: singleton (MCA v1.0, API v1.0, Component v1.1) > > >> MCA sds: pipe (MCA v1.0, API v1.0, Component v1.1) > > >> MCA sds: slurm (MCA v1.0, API v1.0, Component v1.1) > > >> > > >> > > >> -- > > >> --------------------------------------------- > > >> * NEW PHONE AND FAX-NUMBERS * > > >> --------------------------------------------- > > >> Dipl.-Math. Bettina Krammer > > >> High Performance Computing Center (HLRS) > > >> University of Stuttgart > > >> Nobelstrasse 19 > > >> D-70569 Stuttgart > > >> > > >> Phone: ++49 (0)711-685-65890 > > >> Fax: ++49 (0)711-685-65832 > > >> email: kram...@hlrs.de > > >> URL: http://www.hlrs.de > > >> --------------------------------------------- > > >> > > > _______________________________________________ > > > devel mailing list > > > de...@open-mpi.org > > > http://www.open-mpi.org/mailman/listinfo.cgi/devel > > > > > > -- > > Jeff Squyres > > Server Virtualization Business Unit > > Cisco Systems > > _______________________________________________ > > 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 >
