Program is a hybrid OpenMP and OpenMPI matrix multiplication. Time is 0.004174 4.000000 4.000000 4.000000 4.000000 4.000000 4.000000 4.000000 4.000000 4.000000 4.000000 4.000000 4.000000 4.000000 4.000000 4.000000 4.000000 This is the program output. If you see, it is just printed only once by the second case.
On Fri, Jul 12, 2019 at 6:00 PM Ralph Castain via devel < devel@lists.open-mpi.org> wrote: > Afraid I don't know anything about that program, but it looks like it is > printing the same number of times in both cases. It only appears to be more > in the first case because the line wraps due to the number of PUs in the > list > > > On Jul 12, 2019, at 3:00 AM, Dangeti Tharun kumar < > cs15mtech11...@iith.ac.in> wrote: > > Thanks, Ralph. > > Why is the output of the program(mm-llvm.out) being run is printed only > once, while the mpirun from intel prints as many times as mentioned in the > command line? > > > On Thu, Jul 11, 2019 at 11:08 PM Ralph Castain via devel < > devel@lists.open-mpi.org> wrote: > >> Because OMPI binds to core by default when np=2. If you have an OpenMP >> process, you want to add “--bind-to numa" to your mpirun cmd line. >> >> >> On Jul 11, 2019, at 10:28 AM, Dangeti Tharun kumar via devel < >> devel@lists.open-mpi.org> wrote: >> >> >> Hi Devs, >> >> I have build openmpi with LLVM-8 compiler, I tried a simple example on a >> 2 socket machine. >> The following is the output of mpirun from ICC(intel c compiler package) >> and mpirun from openmpi: >> >> Why the CPU topology(highlighted below) identified by both of them are >> different? Not sure, if this behavior is correct. >> >> $>intel/bin/mpirun -np 2 ./mm-llvm.out >> >> OMP: Info #211: KMP_AFFINITY: decoding x2APIC ids. >> OMP: Info #211: KMP_AFFINITY: decoding x2APIC ids. >> OMP: Info #209: KMP_AFFINITY: Affinity capable, using global cpuid leaf >> 11 info >> OMP: Info #154: KMP_AFFINITY: Initial OS proc set respected: >> 0,1,4,5,8,9,12,13,16,17,20,21,24,25,28,29,32,33,36,37,40,41,44,45,48,49,52,53,56,57,60,61,64,65,68,69,72,73,76,77,80,81,84,85,88,89,92,93,96,97,100,101,104,105,108,109 >> OMP: Info #156: KMP_AFFINITY: 56 available OS procs >> OMP: Info #157: KMP_AFFINITY: Uniform topology >> *OMP: Info #179: KMP_AFFINITY: 2 packages x 14 cores/pkg x 2 threads/core >> (28 total cores)* >> OMP: Info #249: KMP_AFFINITY: pid 89736 tid 89736 thread 0 bound to OS >> proc set >> 0,1,4,5,8,9,12,13,16,17,20,21,24,25,28,29,32,33,36,37,40,41,44,45,48,49,52,53,56,57,60,61,64,65,68,69,72,73,76,77,80,81,84,85,88,89,92,93,96,97,100,101,104,105,108,109 >> OMP: Info #249: KMP_AFFINITY: pid 89736 tid 89752 thread 1 bound to OS >> proc set >> 0,1,4,5,8,9,12,13,16,17,20,21,24,25,28,29,32,33,36,37,40,41,44,45,48,49,52,53,56,57,60,61,64,65,68,69,72,73,76,77,80,81,84,85,88,89,92,93,96,97,100,101,104,105,108,109 >> OMP: Info #249: KMP_AFFINITY: pid 89736 tid 89753 thread 2 bound to OS >> proc set >> 0,1,4,5,8,9,12,13,16,17,20,21,24,25,28,29,32,33,36,37,40,41,44,45,48,49,52,53,56,57,60,61,64,65,68,69,72,73,76,77,80,81,84,85,88,89,92,93,96,97,100,101,104,105,108,109 >> OMP: Info #249: KMP_AFFINITY: pid 89736 tid 89754 thread 3 bound to OS >> proc set >> 0,1,4,5,8,9,12,13,16,17,20,21,24,25,28,29,32,33,36,37,40,41,44,45,48,49,52,53,56,57,60,61,64,65,68,69,72,73,76,77,80,81,84,85,88,89,92,93,96,97,100,101,104,105,108,109 >> OMP: Info #209: KMP_AFFINITY: Affinity capable, using global cpuid leaf >> 11 info >> OMP: Info #154: KMP_AFFINITY: Initial OS proc set respected: >> 2,3,6,7,10,11,14,15,18,19,22,23,26,27,30,31,34,35,38,39,42,43,46,47,50,51,54,55,58,59,62,63,66,67,70,71,74,75,78,79,82,83,86,87,90,91,94,95,98,99,102,103,106,107,110,111 >> OMP: Info #156: KMP_AFFINITY: 56 available OS procs >> OMP: Info #157: KMP_AFFINITY: Uniform topology >> *OMP: Info #179: KMP_AFFINITY: 2 packages x 14 cores/pkg x 2 threads/core >> (28 total cores)* >> OMP: Info #249: KMP_AFFINITY: pid 89737 tid 89737 thread 0 bound to OS >> proc set >> 2,3,6,7,10,11,14,15,18,19,22,23,26,27,30,31,34,35,38,39,42,43,46,47,50,51,54,55,58,59,62,63,66,67,70,71,74,75,78,79,82,83,86,87,90,91,94,95,98,99,102,103,106,107,110,111 >> OMP: Info #249: KMP_AFFINITY: pid 89737 tid 89755 thread 1 bound to OS >> proc set >> 2,3,6,7,10,11,14,15,18,19,22,23,26,27,30,31,34,35,38,39,42,43,46,47,50,51,54,55,58,59,62,63,66,67,70,71,74,75,78,79,82,83,86,87,90,91,94,95,98,99,102,103,106,107,110,111 >> OMP: Info #249: KMP_AFFINITY: pid 89737 tid 89756 thread 2 bound to OS >> proc set >> 2,3,6,7,10,11,14,15,18,19,22,23,26,27,30,31,34,35,38,39,42,43,46,47,50,51,54,55,58,59,62,63,66,67,70,71,74,75,78,79,82,83,86,87,90,91,94,95,98,99,102,103,106,107,110,111 >> OMP: Info #249: KMP_AFFINITY: pid 89737 tid 89757 thread 3 bound to OS >> proc set >> 2,3,6,7,10,11,14,15,18,19,22,23,26,27,30,31,34,35,38,39,42,43,46,47,50,51,54,55,58,59,62,63,66,67,70,71,74,75,78,79,82,83,86,87,90,91,94,95,98,99,102,103,106,107,110,111 >> Time is 0.004174 >> 4.000000 4.000000 4.000000 4.000000 >> 4.000000 4.000000 4.000000 4.000000 >> 4.000000 4.000000 4.000000 4.000000 >> 4.000000 4.000000 4.000000 4.000000 >> Time is 0.004542 >> 4.000000 4.000000 4.000000 4.000000 >> 4.000000 4.000000 4.000000 4.000000 >> 4.000000 4.000000 4.000000 4.000000 >> 4.000000 4.000000 4.000000 4.000000 >> >> $>openmpi/bin/mpirun -np 2 ./mm-llvm.out >> >> OMP: Info #211: KMP_AFFINITY: decoding x2APIC ids. >> OMP: Info #211: KMP_AFFINITY: decoding x2APIC ids. >> OMP: Info #209: KMP_AFFINITY: Affinity capable, using global cpuid leaf >> 11 info >> OMP: Info #154: KMP_AFFINITY: Initial OS proc set respected: 0,56 >> OMP: Info #156: KMP_AFFINITY: 2 available OS procs >> OMP: Info #157: KMP_AFFINITY: Uniform topology >> OMP: Info #209: KMP_AFFINITY: Affinity capable, using global cpuid leaf >> 11 info >> OMP: Info #154: KMP_AFFINITY: Initial OS proc set respected: 4,60 >> *OMP: Info #179: KMP_AFFINITY: 1 packages x 1 cores/pkg x 2 threads/core >> (1 total cores)* >> OMP: Info #156: KMP_AFFINITY: 2 available OS procs >> OMP: Info #157: KMP_AFFINITY: Uniform topology >> *OMP: Info #179: KMP_AFFINITY: 1 packages x 1 cores/pkg x 2 threads/core >> (1 total cores)* >> OMP: Info #249: KMP_AFFINITY: pid 89768 tid 89768 thread 0 bound to OS >> proc set 4,60 >> OMP: Info #249: KMP_AFFINITY: pid 89767 tid 89767 thread 0 bound to OS >> proc set 0,56 >> OMP: Info #249: KMP_AFFINITY: pid 89767 tid 89773 thread 1 bound to OS >> proc set 0,56 >> OMP: Info #249: KMP_AFFINITY: pid 89768 tid 89774 thread 1 bound to OS >> proc set 4,60 >> OMP: Info #249: KMP_AFFINITY: pid 89767 tid 89777 thread 3 bound to OS >> proc set 0,56 >> OMP: Info #249: KMP_AFFINITY: pid 89768 tid 89778 thread 3 bound to OS >> proc set 4,60 >> OMP: Info #249: KMP_AFFINITY: pid 89767 tid 89775 thread 2 bound to OS >> proc set 0,56 >> OMP: Info #249: KMP_AFFINITY: pid 89768 tid 89776 thread 2 bound to OS >> proc set 4,60 >> Time is 0.002159 >> 4.000000 4.000000 4.000000 4.000000 >> 4.000000 4.000000 4.000000 4.000000 >> 4.000000 4.000000 4.000000 4.000000 >> 4.000000 4.000000 4.000000 4.000000 >> >> >> -- >> Regards, >> DTharun >> _______________________________________________ >> devel mailing list >> devel@lists.open-mpi.org >> https://lists.open-mpi.org/mailman/listinfo/devel >> >> >> _______________________________________________ >> devel mailing list >> devel@lists.open-mpi.org >> https://lists.open-mpi.org/mailman/listinfo/devel > > > > -- > Regards, > DTharun > > > _______________________________________________ > devel mailing list > devel@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/devel -- Regards, DTharun
_______________________________________________ devel mailing list devel@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/devel
