Intel MPI Library Troubleshooting Guide
The latest versions of the Intel MPI Library User's Guides have added an expanded Troubleshooting section. It provides the following information:General Intel MPI Library troubleshooting...
View ArticleNew tutorial available on analyzing hybrid OpenMP+MPI applications
Discover how to use Intel® Parallel Studio to tune hybrid applications by reviewing MPI utilization inefficiencies and balancing thread load levels.This tutorial uses the sample heart_demo and guides...
View ArticleAnnouncing Intel® Parallel Studio XE 2019 Release
Just Released Intel® Parallel Studio XE 2019! Accelerate Parallel Code—Transform Enterprise to Cloud, & HPC to AIBoost your parallel application performance on the latest Intel® processors with...
View ArticleMPI locked to specific core on node
Hi all,I am running a multiple core single node machine. I wish to run several instances of a mpi processes (say 8 cores for each mpi process) but without the use of a scheduler. Is this possible, i.e....
View ArticleWhat is the correct way to kill MPI program on Windows?
Hi:I install Intel MPI 2019 update 7 on Windows 10 professional. Then I run IMB-MPI1.exe by the following command.mpiexec -localonly -n 4 IMB-MPI1.exeI know that using Ctrl+C in the same console window...
View Articlempirun error running in a cpuset
I've have errors using mpirun whitin a cpuset (regardles if the cset shield is activatet or not)cset set -lr cset: Name CPUs-X MEMs-X Tasks Subs Path ------------ ---------- - ------- - ----- ----...
View Article[-1:12528]ERROR:execvp error on file:...
在调试mpi时出现如下问题代码 program main include 'mpif.h' character* (MPI_MAX_PROCESSOR_NAME) processor_name integer myid,numprocs,namelen,rc,ierr call MPI_INIT( ierr ) call MPI_COMM_RANK( MPI_COMM_WORLD, myid,...
View Articleprocessor pinning does not seem to work on windows
Hi,I am using Intel MPI, build 20200312. I am trying to use various processor pinning options, like I_MPI_PIN_DOMAIN or I_MPI_PIN_PROCESSOR_LIST, and while the I_MPI_DEBUG output shows the expected...
View ArticleExternal library (Mellanox Infiniband SHARP)
Hi All,I have a question to ask about external library.While looking at various materials, I found out about the communication method called the SHARP(Scalable Hierarchical Aggregation and Reduction...
View ArticleHow to use "I_MPI_ADJUST" option efficiently?
Hi All,I found that I_MPI_ADJUST option can be used to test the performance improvement by changing the algorithm of MPI communication.I also learned that there is an AUTOTUNE function, so you can test...
View ArticleIMB_EXT no work
Dear experts,I compiled the IMB benchmark with intel19 and openmpi-4.0.3. All test run ok except IMB_EXT.If I run IMB_EXT in one node, all is ok, but if I run it in 2 nodes, when it runs de benchmark...
View Articlempirun init fatal error for hello world example
Hello,I'm running into a fatal error when trying to run the simple Hello world test with mpirun -np 2 and above. It works fine when using only one process. See the output below. Do you have an idea...
View ArticleAssertion failed in ch4_shm_coll.c at line 2147
Hi, I am using Intel Compiler 2019 (icc 19.1.0.166 20191121) with Intel MPI Version 2019 Update 6 Build 20191024. I am getting the following error quite reproducibly, when running GPAW on 16-56 MPI...
View ArticleMaximum number of MPI processes
Hello, I would like to ask about the maximum number of MPI processes supported in Intel MPI 2019.0.5Case in point, we was conducting massive parallel tests on Knight-Landings cluster. The total number...
View ArticleMPI Bus Error
I'm developing a MPI application, which relies heavily on the MPI shared memory. Recently, I keep hitting the following error messages: srun: error: compute-42-013: task 32: Bus errorsrun: Terminating...
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