mpich

Executing hybrid OpenMP/MPI jobs in MPICH

由 不打扰是莪最后的温柔 提交于 2019-12-01 13:53:46
I am struggling to find the proper way to execute a hybrid OpenMP/MPI job with MPICH (hydra). I am easily able to launch the processes and they do make threads, but they are stuck bound to the same core as their master thread whatever type of -bind-to I tried. If I explicitly set GOMP_CPU_AFFINITY to 0-15 I get all threads spread but only provided if I have 1 process per node. I don't want that, I want one process per socket. Setting OMP_PROC_BIND=false does not have a noticeable effect. An example of many different combinations I tried export OMP_NUM_THREADS=8 export OMP_PROC_BIND="false"

Using MPICH with Boost.MPI on Ubuntu

由 大城市里の小女人 提交于 2019-12-01 10:45:11
I was trying to use boost.mpi under Ubuntu 12.04. apt-get will install openmpi, but some other software (involving torque) I run expect mpich2/mpich, and complain that "mpdstartup: Command not found" I certainly don't want to mess with changing the software to use openmpi and worry about migration issues when the software is upgraded. My question is, is there a user-friendly way to install boost.mpi + mpich2 in Ubuntu (12.04 LTS)? (e.g. an unofficial repository). In the worst-case, if I have to build boost from source, is there a user-friendly way to uninstall a boost installation when I

Cannot get cabal to find the mpi library for haskell-mpi on Windows [closed]

由 ﹥＞﹥吖頭↗ 提交于 2019-12-01 04:14:44
问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 7 years ago . PROBLEM IS SOLVED! Follow the instructions Dons posted here Open your environment variables (My Computer -> Properties (in the context menu) -> Advanced)

mpiexec.hydra - how to run MPI process on machines where locations of hydra_pmi_proxy are different?

由 一个人想着一个人 提交于 2019-12-01 02:13:34
问题 I am trying to run a simple MPI program using MPICH over a cluster of two machines. However, one is running Fedora 17 and the other is running Debian Squeeze - not necessarily a problem, but the issue is that the two distros put their mpi execs in different directories: When I run the following from host1: mpiexec -hosts host2 -np 1 -wdir /home/chris/src/mpi/ ./mpitest it fails with the following error bash: /usr/lib/mpich2/bin/hydra_pmi_proxy: No such file or directory This seems to be

How do I check the version of MPICH?

由 烂漫一生 提交于 2019-11-30 17:47:51
As stated in the question, what is the command that lists the current version of MPICH? I am running CentOS. The command you run to start your application with MPICH is mpiexec , so the way to check the version is: mpiexec --version Well for me it was mpicc -v mpicc for 1.1.1p1 Using built-in specs. Target: i486-linux-gnu Configured with: ../src/configure -v --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.2 -

fault tolerance in MPICH/OpenMPI

由 核能气质少年 提交于 2019-11-30 08:17:49
问题 I have two questions- Q1 . Is there a more efficient way to handle the error situation in MPI, other than check-point/rollback? I see that if a node "dies", the program halts abruptly.. Is there any way to go ahead with the execution after a node dies ?? (no issues if it is at the cost of accuracy) Q2 . I read in "http://stackoverflow.com/questions/144309/what-is-the-best-mpi-implementation", that OpenMPI has better fault tolerance and recently MPICH-2 has also come up with similar features..

How do I check the version of MPICH?

由 青春壹個敷衍的年華 提交于 2019-11-30 01:39:09
问题 As stated in the question, what is the command that lists the current version of MPICH? I am running CentOS. 回答1: The command you run to start your application with MPICH is mpiexec , so the way to check the version is: mpiexec --version 回答2: Well for me it was mpicc -v mpicc for 1.1.1p1 Using built-in specs. Target: i486-linux-gnu Configured with: ../src/configure -v --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib

fault tolerance in MPICH/OpenMPI

由 只谈情不闲聊 提交于 2019-11-29 06:30:00
I have two questions- Q1 . Is there a more efficient way to handle the error situation in MPI, other than check-point/rollback? I see that if a node "dies", the program halts abruptly.. Is there any way to go ahead with the execution after a node dies ?? (no issues if it is at the cost of accuracy) Q2 . I read in "http://stackoverflow.com/questions/144309/what-is-the-best-mpi-implementation", that OpenMPI has better fault tolerance and recently MPICH-2 has also come up with similar features.. does anybody know what they are and how to use them? is it a "mode"? can they help in the situation

Random Number to each Process in MPI

由 纵然是瞬间 提交于 2019-11-28 04:07:39
问题 I'm using MPICH2 to implement an "Odd-Even" Sort. I did the implementation but when I randomize to each process his value, the same number is randomized to all processes. Here is the code for each process, each process randomized his value.. int main(int argc,char *argv[]) { int nameLen, numProcs, myID; char processorName[MPI_MAX_PROCESSOR_NAME]; int myValue; MPI_Init(&argc,&argv); MPI_Comm_rank(MPI_COMM_WORLD,&myID); MPI_Comm_size(MPI_COMM_WORLD,&numProcs); MPI_Get_processor_name

How to create new Type in MPI

由 拥有回忆 提交于 2019-11-27 03:05:49
问题 I am new to MPI and I want to create a new datatype for Residence struct . I just want to see if I can create the new type right way. struct Residence { double x; double y; }; My new MPI Type MPI_Datatype createRecType() { // Set-up the arguments for the type constructor MPI_Datatype new_type; int count = 2; int blocklens[] = { 1,1 }; MPI_Aint indices[2]; //indices[0]=0; MPI_Type_extent( MPI_DOUBLE, &indices[0] ); MPI_Type_extent( MPI_DOUBLE, &indices[1] ); MPI_Datatype old_types[] = {MPI
订阅 mpich