Conflict between IMSL and MPI
I am trying to divide my fortran code into several parts and I want to parallelize each part by using MPI. For each part, I use IMSL library to solve an optimization problem (use BCONF). However, I...
View Articlempiexec does not run
Hi I have encountered a weird problem with mpiexec. Currently I am using intel MPI that comes with intel parallel studio cluster edition on my Windows 10 machines. After installing the program, I...
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Issue while spawning processes across multiple nodes (EXIT CODE: 9)
Hi all, I am using intel parallel studio 2015 on Intel(R) Xeon(R) CPU E5-2680 v3 (RHEL-6.5) and currently facing issues with an mpi based application(Nas Parallel Benchmark-BT). Though the issue seems...
View ArticleUsing MSMPI.dll - fortran crash forrtl 157
I am trying to get a simple example working across 2 amazon nodes. When I run locally, its all fine. Then when I use -machinefile to launch across both nodes, the sample application on the slave node...
View ArticleOPA upgrade from 10.2 to 10.3
Are there best practices for upgrading between OPA versions? e.g. I want to upgrade from 10.2 to 10.3. The installation guide does not seem to have a "upgrade" section -...
View ArticleHow do I download older versions of MPI?
I have a user who has requested a specific version of mpirun be installed. How do I get to old versions? mpirun -V Intel(R) MPI Library for Linux* OS, Version 5.1.3 Build 20160120 (build id: 14053)...
View ArticleMPI performance problem on inter-switch connection
Hi,I have a cluster with 32 machines. The first 25 machines are on the first rack and the rest 7 machines are on the second rack. Each rack has a 1Gbps Ethernet switch.I run a MPI application which...
View ArticleSignal propagation with Intel MPI
Our lab recently added another HPC cluster and updated most other clusters to RHEL-7 (from 6). The PBS system was also updated to a newer supported version. My codes implement signal handlers to affect...
View Articlelibfabric.so.1 not found warning
One warning I get with I_MPI_DEBUG set to 5 is this odd one: [0] MPID_nem_ofi_init(): cannot load default ofi library libfabric.so, error=libfabric.so.1: cannot open shared object file: No such file...
View ArticleMPI 5.0 Runtime Environment silent uninstall
Hello,I'm an administrator at our company and are facing the task to uninstall the MPI 5.0 Runtime-Environment on 50+ Windows machines. The MPI 5.0 Runtime-Environment comes with an FEM Software we...
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MPI Performance issue on bi-directional communication
Hi,(I attached the performance measurement program written in C++)I am experiencing performance issue during bi-directional MPI_Send/MPI_Recv operations.The program runs two threads; (One for MPI_Send...
View ArticleMPI Bi-band shows MPI cannot exploit full duplex transmission mode
I am running performance benchmark with C++, Intel MPI and CentOS 7.I use two types of benchmarks:(1) Uni-band: https://software.intel.com/en-us/node/561907The first half of ranks communicates with the...
View ArticleMPI_Info_set crashes
Here is a small section of my test codeuse mpi....... call mpi_init(info) comm = mpi_comm_world call MPI_COMM_SIZE(comm, nproc, info) call MPI_COMM_RANK(comm, node_me, info) len0 = 300 len1...
View ArticleMPI_ISend bug on Fortran allocatable character
I am encountering what I believe to be a bug associated with allocatable character arrays and MPI_ISend. Sending allocatable character array with MPI_ISend and receiving with MPI_Recv returns junk. See...
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mpiifort running fine on some nodes and showing "open_hca: device mlx4_0 not...
Dear all,Using mpiifort on a cluster results in : "open_hca: device mlx4_0 not found" for some group nodes while for others there is no error and mpiifort runs perfectly fine. All the nodes have the...
View ArticleProblem executing HPCC and IMB benchmarks on IBM platform HPC
I am a newbie on HPC world, and I know a little about MPI and Infiniband.I want to execute the IMB 2017 and HPCC 1.5.0 benchmarks on our HPC to be sure that all is configured correctly.we have 32...
View ArticleMPI processes got killed when the computer goes in sleeping mode
I notice that all processes started under MPI are gone when the computer wakes up from a sleeping mode.Is this normal behavior? Is there any setting that keeps the processes alive? krDanyZona:...
View ArticleWhy runtime is invalid?
Hi, Intel technician,when I set the environmental variable OMP_SCHEDULE = runtime, the following warning is given:D:\users\dingjun\build\data>mx201610.exe -f...
View Articlewhy 'logic' value of KMP_AFFINITY is invalid?
Hi, INTEL technician, When environmental variable KMP_AFFINITY=logic, the following warning is given:D:\users\dingjun\tests>set KMP_AFFINITY=verbose,logicD:\users\dingjun\tests>set...
View Articlememory problem in I_MPI_WAIT_MODE=1 with shm:ofa fabrics
Hi,We found that when using the wait mode with shm:ofa fabrics, the processes of the MPI program use more memory than the other configurations. In some situations, the program crashes with memory...
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