compiling problem: libmpi_mt.so vs libmpi.so
Hi,1. My hybrid mpi/openmpi code compiled with intelmpi-4.1.3.048 and intel-compilers-13.0.1 gives the following errors:mpiicpc -o paraEllip3d -O3 -DNDEBUG -openmp -mt_mpi Assembly.o Boundary.o...
View ArticleSegfault in DAPL with Mellanox OFED 2.1
Hi,We're having a problem with the Intel MPI library crashing since we've updated to the latest Mellanox OFED 2.1. For example, the test program supplied with Intel MPI (test/test.f90) crashes with a...
View ArticleMPI doesn't work (Fatal error in MPI_Init)
Hi,I have the following problem:I have two nodes and config file:-n 1 -host node0 myapp -n 1 -host node1 myappIn this way it works fine. However If I change the order of lines in config to:-n 1 -host...
View ArticleHow to free a MPI communicator created w MPI_Comm_spawn
Hi,I'm trying to free a communicator created with this call:int MPI_Comm_spawn(char *command, char *argv[], int maxprocs, MPI_Info info, int root, MPI_Comm comm, MPI_Comm *intercomm, int...
View ArticleMemory Leak detected by Inspector XE in MPI internal buffer
I am interested in finding out if there is a way to configure Intel's MPI libraries to alter what the threshold is for the creation of internal buffers so I can verify the source of a memory leak...
View ArticleIMPI dapl fabric error
Hi, I'm trying to run HPL benchmark on an Ivybridge Xeon processor with 2 Xeon Phi 7120P MIC cards. I'm using offload xhpl binary from Intel Linpack.It throws following error$ bash...
View ArticleWhat/where is DAPL provider libdaplomcm.so.2 ?
DAPL providers ucm, scm are frequently mentioned, but what is libdaplomcm.so.2?Could someone point me to a description of the use case for the DAPL provider libdaplomcm.so.2?I am currently using the...
View ArticleDifference between mpicc and mpiicc
I write a simple mpi program as follow:#include "mpi.h" #include <stdio.h> #include <math.h> void main(argc,argv) int argc; char *argv[]; { int myid,numprocs; int namelen; char...
View ArticleRun Intel MPI without mpirun/mpiexec
Hi,I am wondering does Intel MPI support a MPI run without mpirun/mpiexec in the command line?I know that in MPI-2 standard, it supports the “dynamic process” feature, i.e., dynamically generate/spawn...
View ArticlePlacing MPI ranks on the specific cores of Xeon Phi
Hi..Is it possible to place the MPI ranks on the specific cores of Xeon Phi (1-60) during the native mode computation. All that I understand is that the scheduler assigns ranks in round robin fashion...
View ArticleRunning MPI over heterogeneuos Infiniband Nework
Hello,I have a setup of Infiniband network where we are testing the performance of FDRs. I have two FDRs on the sender and one FDR on each receiver. There are two receivers. The idea is to run parallel...
View Articlempiifort and 'end-of-file during read'
Hi,I'm trying to run an MPI code compiled with mpiifort. At the begenning of the code, while trying to open and read an ASCII file (the file is read by all processors)file_name =...
View ArticleSetting affinity for third party applications that create threads
Hope this is the correct forum to ask this question.We can use KMP_AFFINITY and associated infrastructure to set affinity for threads spawned by applications we've developed. And we can use numactl to...
View ArticleMPI collect data from process in array
Hi,I am trying to use mpi to split computations on n process on a array. So say process have computed the values for their ranges for eg: process 1: Array[1 to a1] process 2: Array[a1+1 to a2] process...
View ArticleLinking libraries after the libraries added by the mpicxx wrapper linker
Hello,If I use mpicxx to link, it adds a set of libraries at the end. What flags should I provide to mpicxx or what environment variables should I set to link some libraries after the libraries...
View Articlecompiling problem: libmpi_mt.so vs libmpi.so
Hi,1. My hybrid mpi/openmpi code compiled with intelmpi-4.1.3.048 and intel-compilers-13.0.1 gives the following errors:mpiicpc -o paraEllip3d -O3 -DNDEBUG -openmp -mt_mpi Assembly.o Boundary.o...
View ArticleSegfault in DAPL with Mellanox OFED 2.1
Hi,We're having a problem with the Intel MPI library crashing since we've updated to the latest Mellanox OFED 2.1. For example, the test program supplied with Intel MPI (test/test.f90) crashes with a...
View ArticleMPI doesn't work (Fatal error in MPI_Init)
Hi,I have the following problem:I have two nodes and config file:-n 1 -host node0 myapp -n 1 -host node1 myappIn this way it works fine. However If I change the order of lines in config to:-n 1 -host...
View ArticleHow to free a MPI communicator created w MPI_Comm_spawn
Hi,I'm trying to free a communicator created with this call:int MPI_Comm_spawn(char *command, char *argv[], int maxprocs, MPI_Info info, int root, MPI_Comm comm, MPI_Comm *intercomm, int...
View ArticleMemory Leak detected by Inspector XE in MPI internal buffer
I am interested in finding out if there is a way to configure Intel's MPI libraries to alter what the threshold is for the creation of internal buffers so I can verify the source of a memory leak...
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