Fortran code aborts beyond 108 nodes
Hi,There is an issue we have been facing for the past few months.We used to use a C code for our simulations. It used to run successfully on 108 nodes (each node has 16 processors), but we could not...
View ArticleIntel MPI 5.0.1.037
Hi,I have two questions about Intel MPI on Micorsoft Windows 7 64bit.The first one concerning about Intel MPI 5.0.1.037. If I executeC:\Program Files (x86)\Intel\MPI-RT\5.0.1.037\em64t\bin\smpd...
View ArticleProblem in running mpirun command through newly created user
Hi Team,I am facing a problem while running mpirun command through newly created user.Package ID: l_mpi_p_4.0.3.008Any help will be highly appreciated.Regards.
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-perhost not working with IntelMPI v.5.0.1.035
-perhost option does not work as expected with IntelMPI v.5.0.1.035, though it does work with IntelMPI v.4.1.0.024: $ qsub -I -lnodes=2:ppn=16:compute,walltime=0:15:00 qsub: waiting for job...
View Article[6] Assertion failed in file ../../segment.c
Hi, we have compiled our parallel code by using the latest Intel's software stack. We do use a lot of passive RMA one-sided PUT/GET operations along with a derived datatypes. Now we are expericincing...
View ArticleIntel MPI issue with the usage of Slurm
To whom it may concern,Hello. We are using Slurm to manage our Cluster. However, we met a new issue of Intel MPI with Slurm. When one node reboots, the Intel MPI will fail with that node but manaully...
View ArticleProblems reading HDF5 files with IntelMPI?
Hi,is anyone aware of troubles with PHDF5 and IntelMPI? A test code to reads an HDF5 file in parallel has trouble when scaling if I run it with IntelMPI, but no trouble if I run it, for example, with...
View ArticleDAPL works but OFA not
Dear Intel colleagues,I have just set up a new diskless cluster. Running IMB "Pingpong" with -genv I_MPI_FABRICS shm:dapl shows promising performance. But with -genv I_MPI_FABRICS shm:ofa things never...
View ArticleFatal error in MPI_Init: Other MPI error, error stack: MPIR_Init_thread(264):...
Hello,I am running Intel MPI for Intel mp_linpack benchmark (xhpl_em64t).Steps:1. I sourced the mpivars.sh from /opt/intel/impi/bin64/mpivars.sh2. I did "mpdboot -f hostfile"$ cat hostfile node 1 node...
View ArticleUsing IMB to test multiple host p2p communications simultaneously
I was wondering if we can use the -multi option in IMB to test multiple p2p MPI connections. In a cluster of 2M nodes can we instruct IMB to create M p2p MPI communications simultaneously, with each...
View ArticleIFORT constant numbers
Hello,I have frequently heard that in C++ HPC xeon phi applications, it is beneficial to declare variables as const, if possible. However, I cannot seem to ascertain whether or not this is possible in...
View ArticleTuning Intel MPI for Phi
Does setting I_MPI_MIC=enablechange other MPI environment variables, particularly any that would tune MPI for the MIC system architecture? As a side question, has anyone written a Tuning and...
View Articlempiexec hang after program exit
Out product includes GUI and engine parts. Intel MPI 4.1 was used in engine code. GUI will can engine through mpiexec. Everything works fine on Windows 7 and Windows server 2008. When we run the...
View ArticleLinking with mpiicc (impi 5.0.1)
Hello, I have been trying to configure (and compile) the PETSc library with impi 5.0.1 (and ifort Version 15.0.0.090 Build 20140723) using mpiicc script for C compilation. However, the configure...
View ArticleIBM 4.0 and data-check
The data-check compile-time option seems poorly debugged.To reproduce:1. Compile IMB-MPI1 with data-check enabled (-DCHECK)2. Create a msg_lengths file (for L in `seq 0 100`; do echo $L >>...
View Articlempiexec starts multiple processes of same rank 0
Hello everybodyI am using the new Intel Composer XE 2015 which comes with a version of Intel MPI. I have been using OPENMPI before and compiled with g++ and my programs ran fine. Now with the new Intel...
View ArticleAnyway to make Intel MPI run with event-driven instead active polling?
Hi all,By default, IMPI keeps polling and take 100% of CPU when communicating. Anyway to make it event-driven to reduce the CPU load?Thanks.
View ArticleProblem with IntelIB-Basic, Intel MPI and I_MPI_FABRICS=tmi
Hi,We have a small cluster (head node + 4 nodes with 16 cores) using Intel infiniband. This cluster is under CentOS 6.6 (with the kernel of CentOS 6.5).On this cluster Intel Parallel Studio XE 2015 is...
View ArticleLooking for data of traces
Hello I am doing a study in which I would analyze trace data collected by the Intel®Trace Analyzer and Collector. Any directions or leads on where I could find this data would be very much...
View ArticleOrdering of images on different nodes using Coarray Fortran and IntelMPI
HelloI have a question about ordering of images when -coarray=distributed compiler option is used and the program is run on a cluster using IntelMPI libraries.Assuming that the number of images is the...
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