[OMPI users] Limitation of MPI_BCAST

Hi, I am using openmpi 1.6 and when I tried to send a large array through MPI_BCAST in fortran. The number of count is larger than 3 billions. Although I compiled openmpi and my code with the option to declare my fortran integer as 64 bit long in linux. I found out that fortran pbcast_f.c will

[OMPI users] [SPAM:## 71%] checkpoint --term core dump

Hi, I encountered a core dump when using ompi-checkpoint --term pid. Here is the trace: [genova:01808] *** Process received signal *** [genova:01808] Signal: Segmentation fault (11) [genova:01808] Signal code: Address not mapped (1) [genova:01808] Failing at address: 0x90 [genova:01808] [ 0]

[OMPI users] Question on MPI_Reduce_scatter limit

Dear all, I am using openmpi 1.6 on linux. I have a question on MPI_Reduce_scatter. I try to see how large the data can push through MPI_Reduce_scatter using the following code. size = (long) 1024*1024*1024*4; for(k=1;k<=16;++k) { bufsize = k*size/16; for(i=0;i

[OMPI users] fortran program with integer kind=8 using openmpi‏

Dear all, Thank you for all responses. There is another problem using -fdefault-integer-8. I am using 1.6.. For the i8: configure:44650: checking for the value of MPI_STATUS_SIZE configure:44674: result: 3 Fortran INTEGERs configure:44866: checking if Fortran compiler works configure:44895:

Re: [OMPI users] fortran program with integer kind=8 using openmpi

My concern is how do the C side know fortran integer using 8 bytes? My valgrind check show something like: ==8482== Invalid read of size 8 ==8482==at 0x5F4A50E: ompi_op_base_minloc_2integer (op_base_functions.c:631) ==8482==by 0xBF70DD1: ompi_coll_tuned_allreduce_intra_recursivedoubling

[OMPI users] fortran program with integer kind=8 using openmpi

Hi, I try to compile my fortran program in linux with gfortran44 using option -fdefault-integer-8, then all my integer will of kind=8. My question is what should I do with openmpi? I am using 1.6, should I compile openmpi with the same options? Will it get the correct size of MPI_INTEGER and

[OMPI users] hang in mpi_allreduce in single linux machine‏

Hi, When I ran multiple processes in a single machine, the programs are hanging in mpi_allreduce in different points during different runs. I am using 1.3.4. When I used different machines to run the processes, it is OK. Also, when I recompiled open mpi in debug mode, the problem goes