Intel MPI, DAPL and libdaplomcm
Recently, we upgraded our system and have installed Mellanox OFED 2.2-1 in order to support native MPI calls between Xeon Phis. Our system is a mixture of non-Phi nodes and Phi nodes.In the course of...
View ArticleIntel MPI
Hello.I am developing fault tolerant communicaction layer (MPI-like). So this layer is slow now. Can I learn something about internal Intel MPI architecture to understand basic principles of big data...
View ArticleMPI 5.0.2.044 Library Link Error
Hi, Everyone,Under Linux OS, I built my MPI application with Intel MPI 5.0.2.044. There is no error in compiling but there are following error in linking MPI library.I am using the Intel MPI's...
View ArticleLicense File Activation
I just received my serial number of single user Intel Cluster Studio 2015 (Linux). I had done product registration and generated a license file. However, the license file generation page didn't show...
View Articlempivars.sh to build path automatically
Looks like on Linux the intel MPI runtime hardcodes the path of mpivars.sh, eg: I_MPI_ROOT=/opt/intel/impi/4.1.3.049; export I_MPI_ROOTOn windows on the other hand the path is dynamically generated:...
View ArticleBug Report : MPI_IRECV invalid tag problem
Hi, there,In MPI_5.0.3, the MPI_TAG_UB is set to be 1681915906. But internally, the upper bound is 2^29 = 536870912, as tested out by the code attached.Same code will run just fine in MPI...
View ArticleIntel MPI 3.2.2.006 and Supported OS and number of cores per machine
Has intel made a statement as to the last know good version of Red Hat that supports Intel MPI 3.2.2.006. We have a new cluster with 20 cores/per node and have observed a fortran system call failing...
View Articleproblem when multiple MPI versions installed
Dear all,I have a problem to launch processes when multiple MPI versions installed. The processes work before I installed latest MPI 5.0.3.048:C:\Program Files (x86)\Intel\MPI\4.1.3.047>mpiexec...
View ArticleHow many processes we can run run HPL on with Intel MPI ?
If we are using evaluation version of Intel MPI/compiler/MKL (cluster tools) how many cores/processes we can run HPL on?
View Articleproblem with the x86_64-k1om-linux-ld: warning
Hi dear staff,I try to compile the bwa (https://github.com/intel-mic/bwa-aln-xeon-phi-0.5.10) on xeon host for xeon phi, but I get some warnings like this:x86_64-k1om-linux-ld: warning: libimf.so,...
View ArticleCannot use jemalloc with IntelMPI
Hi,I've tried to bench several memory allocators on Linux (64-bit) such as ptmalloc2, tcmalloc and jemalloc with an application linked against IntelMPI (4.1.3.049).Launching any application linked with...
View ArticleIntel MPI 5.0.3.048 and I_MPI_EXTRA_FILESYSTEM: How to tell it's on?
All,I hope the Intel MPI experts here can help me out. Intel MPI 5.0.3.048 was recently installed on our cluster, a cluster that uses a GPFS filesystem. Looking at the release notes I saw that...
View Articleneed to type "Enter" ?
Hi, Everyone,I am running my hybrid MPI/OpenMP jobs on 3-nodes Infiniband PCs Linux cluster. each node has one MPI process that has 15 OpenMP threads. This means my job runs with 3 MPI processes and...
View ArticleMPI_Init_thread or MPI_Init failed in child process
I have two programs, A and B. They all are developed with MPI. A will call B. If I directly start A and call B, every thing is OK.If I start A with mpiexec, like mpiexec -localonly 2 A.exe, and call B....
View ArticlePerformance issues of Intel MPI 5.0.2.044 on Windows 7 SP 1 with 2x18 cores...
Dear support team,I have a question about a performance difference between Windows 7 SP 1 and RHEL 6.5.The situation is as follows: The hardware is a DELL precision rack 7910, see link for exact...
View ArticleProfiling a complex MPI Application : CESM (Community Earth System Model)
Hello. CESM is a complex MPI climate model which is a highly parallel application. I am looking for ways to profile CESM runs. The default profiler provides profiling data for only a few routines. I...
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Problem: Sending more than two process
Hi,I have faced with a problem when my program try to send structure data more than two process. I created data structure mpi_docking_t as below typedef struct s_docking{ char receptor[MAX_FILE_NAME];...
View ArticleDoes n550 cpu support parallel programming(mpi)?
Hello everyone,i have samsung n150 plus netbook. it has intel n550 cpu. i want to develop some mpi programs with this device but i can't install MPICH libraries or any others. When i tried, i get...
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Intel ITAC error
Hello,I am using Intel Traceanalyzer to profile an application called CESM. Since I want to profile the user defined functions, I instrument the code using the -tcollect option during compilation. This...
View ArticleMPI equivalent of KMP_PLACE_THREADS on MIC
Hello All,When I run pure OpenMP example on MIC, I find KMP_PLACE_THREADS very useful. (for example, I can benchmark using 8 cores and 3 threads on every core with "KMP_PLACE_THREADS=8c,3t,0O"What is...
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