Problem with Intel MPI on >1023 processes
I have been testing code using Intel MPI (version 4.1.3 build 20140226) and the Intel compiler (version 15.0.1 build 20141023) with 1024 or more total processes. When we attempt to run on 1024 or more...
View Articlempitune Relies on Old OpenSSL
Hi,One of our users has reported a problem with the mpitune utility included with Intel MPI v5.0.2.044. In particular, it appears that the hashlib module it uses is linked against an old version of...
View ArticleError while building NAS benchmarks using Intel MPI
I am trying to build NAS benchmarks using Intel MPI and below is the makefile that I am using. #--------------------------------------------------------------------------- # #...
View Articlenested mpirun commands
Hi, I have an mpi program that calls another mpi program (written by someone else) using a fortran system calldriver.f90 call MPI_INIT(..)system('mpirun -np 2 ./mpi_prog.x')call MPI_FINALIZE(...)...
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MPI_COMM_SPAWN crashing
I have two fortran mpi programs (driver.f90 and hello.f90, both attached here) driver.f90 contains a call to MPI_COMM_SPAWN which calls hello.xWhen I run it using the command "mpirun -np 2 ./driver.x"...
View ArticleProblem runing Intel MPI w/ IB
The same code, submitted to the queue (SGE) on our cluster, crashes right away some of the time (25% of the cases?) on the following error message:libmpifort.so.12 00002AC615FAD9BC Unknown Unknown...
View ArticleIntel MPI suddenly exited
Hello,I installed intel MPI on windows 7 x64 and executed "> mpiexec -n 4 program.exe", it seemed to be running fine for about 30h and was using the appropriate resources expected. However, the...
View ArticleHow to increase performance of MPI one-sided performance with Intel MPI?
Hello,we have an application with basically two (last) sequence of actions in the domain decomposition:one set of tasks (subset a) callscall mpi_win_lock(some_rank_from_subset_b) call...
View ArticleMODULEFILE creation the easy way
If you use Environment Modules (from Sourceforge, SGI, Cray, etc) to setup and control your shell environment variables, we've created a new article on how to quickly and correctly create a...
View ArticleFault Tolerance Question
Hello there,I am trying to do some experiments with fault tolerance on MPI with FORTRAN, but I'm having troubles. I am calling the routine CALL MPI_COMM_SET_ERRHANDLER(MPI_COMM_WORLD,...
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Intel MPI gives wrong number of physical cores on core i7 Q820?
Hi,I have begun learning MPI on my Dell 4500 with a Core i7 Q820 processor (4 physical and 8 logical cores).When I run a simple program in Fortran to get the rank and size, i get 0 and 1 instead of 0...
View ArticleRun MPI job on LSF for Windows
When I ran a MPI job on Linux using LSF, I just use bsub to submit the following script file and #!/bin/bash #BSUB -n 8 #BSUB -R "OSNAME==Linux && ( SPEED>=2500 ) && ( OSREL==EE60 ||...
View ArticleMPI_Recv block a long time
hello: I get into trouble when use MPI_Recv in my programmes. My programme start 3 subprocess,and bind them to cpu 1-3 respectively. In each subprocess, first disabled interrupts , then send...
View ArticleMaximum MPI Buffer Dimension
HI,there is a maximum dimension in MPI buffer size? I have a buffer dimension problem with my MPI code when trying to MPI_Pack large arrays. The offending instruction is the first pack call:CALL...
View ArticleRLIMIT_MEMLOCK too small, although locked men = unlimited
Hello, I am currently working on testing our new inifiniband cards and am running into some problems. The cluster is small, 8 compute nodes, 16 cores each, with the master having 4 cores. The nodes...
View ArticleDeadlock with MPI_Win_fence going from Intel MPI 4.1.3.049 to 5.0.3.048
We encountered a problem when migrating a code from Intel MPI 4.1.3.049 to 5.0.3.048. The code in question is a complex simulation that first reads global input state from disk into several parts in...
View ArticleWhere are these references located? Installation error?
All,Thank you for taking a look at this!I have downloaded and installed composer xe 2015.3.187 and didn't see any obvious errors. However, when I try to run an often used code from other machines on my...
View ArticleProblem with Intel Trace Collector
I'm trying to use for the first time the intel trace collector on a cluster machine (with the intel xe 2013 and the itac 8.1.2.033).I built my program in the standard production mode and in the bash...
View ArticleDoes MPI work for Xeon X5650, i7 2600K, i7 4790K and i7 4910MQ?
Hi,My question is on the subject line!Best regardsAnders S
View ArticleParallel Universe link slightly mangled
I don't know exactly where to submit this, but one of the links on the Parallel Universe magazine page is mangled. On the page https://software.intel.com/en-us/intel-parallel-universe-magazine the...
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