Intel® Clusters and HPC Technology

Error message: control_cb (./pm/pmiserv/pmiserv_cb.c:1151): assert (!closed) failed

Hello, I have the following error message when I run my FORTRAN code on a HPC of my university:

[mpiexec@node0653] control_cb (./pm/pmiserv/pmiserv_cb.c:1151): assert
(!closed) failed

I had my code attached. I can successfully compile my codes in debug mode without any error. Besides, I have already unblocked the stack size of my machine by adding in command line "ulimit -a unlimited." 

filehandle value problem MPI MPI_FILE_OPEN on Windows

Testing the Intel MPI libraries in windows 8.1.  I encounter some problems in the following statement.


I get return values for fh looking like this  -1212974328,  What's going on?

Performance issue with multi-rail support in Intel MPI 5.0


I am experiencing a severy performance loss when using multiple rails in Intel MPI 5.0 and the KNC and an mlx5 adapter (which has 2 ports). With Intel MPI 4.1 it was much better.

Let me give an example of the performance of our application (per KNC):

Problem on MPI: About Non-Blocking Collective operations


The structure of my code is,

         MPI_Allgatherv();  //Replaced by MPI_Iallgatherv();

Collective operations in part 2 is the bottleneck of this program.

windows authentication via Infiniband

Hello everyone,
I need your help with a problem of windows authentication .
I have changed the method of authentication in "delegation", but it still does not work, and a password is always required.
between master nodes and computes nodes, there are two types of networks, Gigabit LAN (seen by all the AD domain) and Infiniband (seen by masters and compute nodes). the scheduler sending all jobs via infiniband, is that it has an impact on the authentication method? if so, how can I bypass this problem?


Intel mpi/openmp hybrid programming on clustering!

Hello, Admin!
I'm now using Intel Cluster Studio Tool Kit! And I'm trying to run hybrid(mpi+openmp) program on 25 compute nodes!I compile my program using with -mt_mpi -openmp. I use I_MPI_DOMAIN=omp OMP_NUM_THREADS=2 environment variables, that means for every process(mpi) will have 2 threads(openmp).  I can run my program without errors still using with 14 compute nodes! But beyond 14 compute nodes, error outputs is following!

Checkpointing MPI jobs with Intel MPI version

Trying to run checkpointing with BLCR using the Intel MPI library. Compiled the source MPI codes using the Intel mpicc compiler. 

While running, used mpiexec.hydra -ckpoint on -ckpointlib blcr and other options. The checkpoints do get written, but the application crashes with a segfault after the first checkpoint itself (after having written a multi gigabyte checkpoint context file to disk) The applications run perfectly to completion when I run them without the checkpoint options. 

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