Installing Quantum Espresso with Intel Parallel Studio and OpenMPI
Hi,I install the latest version of the Intel Parallel Studio and OpenMPI-2.0.1. Now when I try to install the quantum espresso I saw the following lines.ld: warning: libifport.so.5, needed by...
View Articlempiexec run on different os
Hello,I am developing a program using mpi routine with intel parallel studio xe 2013After compile, I want to distribute the developed software to other people who dont have cluster studio.Therefore, I...
View ArticlePinning of processes spawned with MPI_Comm_spawn
Hi,the I_MPI_PIN_* variables can be used to set to pretty much any cpu-mask for the MPI-ranks that are used. Unfortunately, the Intel MPI library doesn't set the mask correctly for processes that are...
View ArticleSilent installation of Intel MPI for Windows
Hi,I was trying to install Intel MPI for Windows (w_mpi-rt_p_5.1.3.180.exe) silently on the compute nodes of a Windows HPC cluster. I followed the instruction here:...
View ArticleIntel® MPI with C#
Hi,I was wondering if you had any recommended way of using Intel MPI with C#?The only resource that I found written by Intel was here. Which is a short tutorial that describes"...how you reuse the...
View ArticleThe matched MPI Send/Recv pairs are mixed up
Hi,Each MPI process has dedicated thread for each send/receive operation (I use MPI_Send/MPI_Recv calls). Because the data size is too big, I made each thread iterate over a for loop sending fixed...
View ArticleIs there any performance or space overheads for using 'tag' in MPI?
Hi, I wonder if there can be any performance or space overheads for using 'tag' in MPI.It would depend on how it is implemented, but I guess if it used a sort of hash map and keep (possible) multiple...
View ArticlePinning of processes spawned with MPI_Comm_spawn
(somehow, my previous post 700216 was initially in a draft state, then got published, but didn't appear on the mailing list)Hi,the I_MPI_PIN_* variables can be used to set to pretty much any cpu-mask...
View ArticleIntel Inspector: Uninitialized memory access for range loop
Hi all,I use following Software:* Microsoft Windows * Intel® Parallel Studio XE Composer Edition for C++ Windows* 2016 * Intel Inspector Xe 2016Following codes cause Uninitialized memory...
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 ArticleCompiler Error "Segmentation violation signal raised."
I was using compiler version (compilers_and_libraries_2016.1.150), and I updated into (compilers_and_libraries_2017.0.098).After the update, I cannot compile my application program due to the...
View ArticleReceived data has zeros...
I have a few mega bytes of data and fixed size buffer (4MB).So the sender thread iterates sending (MPI_Send) a fixed sized data at a time until it sends all the data. The receiver knows how many bytes...
View ArticleSLURM and I_MPI_JOB_RESPECT_PROCESS_PLACEMENT
I was having issues with Intel MPI 5.x (5.2.1 and older) not respecting -ppn or -perhost. Searching this forum I found this...
View ArticleInternal MPI error! cannot read from remote process
On my Dell laptop (E7440 with an Intel i7), mpirun on my program terminates with the following:Fatal error in MPI_Recv: Other MPI error, error stack: MPI_Recv(224)...................:...
View ArticleLinux Intel Fortran 2017 Update 1: problem with MPI mod files
Prior to 2017 Update 1, all worked well.After 2017 Update 1, when compiling I get the error: error #7013: This module file was not generated by any release of this compiler. [MPI]which is...
View ArticleInternal MPI error on user but not as root
I'm trying to run a fortran code, but when I run it I'm getting this message:Fatal error in PMPI_Waitall: Other MPI error, error stack: PMPI_Waitall(405)...............: MPI_Waitall(count=5,...
View ArticleMPI crashes with the error message: (it_plfd->revents & POLLERR) == 0
Does any one know what the following error message mean? where should I check?[20] rank = 0, revents = 24, state = 8===================================================================================...
View ArticleiMPI 5.2.1 Omni-Path tuning
For older Intel MPI versions, we were told to set this:export I_MPI_HYDRA_PMI_CONNECT=alltoall. Is this needed with Intel MPI 5.2.1? And is 5.2.1 the latest version? we also set...
View ArticleNo speedup of cluster_sparse_solver beyond 32 cpus
My cluster has 16 cpus/node. My matrix is symmetric positive definite and size is ~2 million by 2 million with ~4 million non-zero entries. My factorization times are:16 cpus - 84 seconds32 cpus - 44...
View Articleintel MPI and oversubscribing
hello, for launching test base we use previously openMPI with theses options in order to position oversubcribing The objective was to have the tests not troubling each others and have a quickly time...
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