如何强制OpenMPI使用GCC而不是ICC？是否需要重新编译OpenMPI？ [英] How to force OpenMPI to use GCC instead of ICC? Is recompiling OpenMPI necessary?

问题描述

我有一个用于 gcc 的并行计算的C代码，我想在一个集群上编译它，它显然使用 icc 通过 mpicc 。更正代码 icc - 友好似乎是太费时，所以我想知道我是否可以问 OpenMPI 使用 gcc 。我没有该集群的管理员权限，我真的不喜欢原来的配置。

如果不能在例如。 Makefile ，然后我可以希望在我的主目录中编译 OpenMPI ，但是我需要一些指导，那。你能帮我吗？

---

UPDATE1 b

Makefile 包含

  CC = mpicc 
 CFLAGS + = -DMPI 
  

这里有一些OpenMPI文件

  $ which mpicc 
 / usr / bin / mpicc 
 
 lrwxr-xr-x / usr / bin / mpicc  - 让我知道，这是一个非常简单的例子，我们可以看到，如果我可以为您提供更多信息。
 
 
 
 
 
 
  UPDATE2  
 
使用 OpenMPI 设置 mpicc  c> 
  $ more /usr/local/share/openmpi/mpicc-wrapper-data.txt 
 project =打开MPI 
 project_short = OMPI 
 version = 1.1.4 
 language = C 
 compiler_env = CC 
 compiler_flags_env = CFLAGS 
 compiler = icc 
 extra_includes = openmpi 
 preprocessor_flags = 
 compiler_flags = -pthread 
 linker_flags = 
 libs = -lmpi -lorte -lopal -ldl -Wl， -  export-dynamic -lnsl -lutil  - ldl 
 required_file = 
  
但是，我没有权限编辑此文件， code> OPMI_CC = gcc 不会更改编译器。
 
 
 
 
 
 
 UPDATE3  
 
 
 
环境变量 CC = gcc 不起作用
  $ export CC = gcc 
 $ echo $ CC 
 gcc 
 $ make clean $$ make 
 .. .icc：...错误
  
 
 
 
 
 
 
  UPDATE4  
 
 
 
 ...  export OMPI_CC = gcc  http://stackoverflow.com/questions/3353119/how-to-force-openmpi-to-use-gcc-instead-of-icc-is-recompiling-openmpi-necessary/3353285#3353285> thanks to sharth < a>）。我应该有一天记得这是不同的东西... 
 
 
 
虽然创建了二进制文件，我得到了以下再见消息
  /opt/intel/fce/9.1.036/lib/libimf.so：warning：warning：feupdateenv未实现，总是失败
  
 
 
解决方案
请参阅 http://www.open-mpi.org/faq/?category=mpi-apps# override-wrappers-after-v1.0 。
 
I have a C-code for parallel computing written for gcc, and I want to compile it on a cluster, which apparently uses icc via mpicc. Correcting the code to be icc-friendly seems to be too time-demanding, so I wonder if I can ask OpenMPI to use gcc instead. I don't have the admin rights on that cluster, and I would actually prefer to do not mess the original configuration.

If it is not possible to set in e.g. Makefile, then I could hopefully compile OpenMPI in my home directory, but I need some guidance in what must be done after that. Could you help me?



UPDATE1

The Makefile contains
CC = mpicc
CFLAGS += -DMPI
And here are some OpenMPI files
$ which mpicc
/usr/bin/mpicc

lrwxr-xr-x  /usr/bin/mpicc -> opal_wrapper
-rwxr-xr-x  /usr/bin/opal_wrapper
Let me know, if I can provide you more information.



UPDATE2

With the help of Jeff, I was able to find OpenMPI settings for mpicc
$ more /usr/local/share/openmpi/mpicc-wrapper-data.txt 
project=Open MPI
project_short=OMPI
version=1.1.4
language=C
compiler_env=CC
compiler_flags_env=CFLAGS
compiler=icc
extra_includes= openmpi
preprocessor_flags= 
compiler_flags=-pthread 
linker_flags=    
libs=-lmpi -lorte -lopal   -ldl   -Wl,--export-dynamic -lnsl -lutil -ldl 
required_file=
However, I do not have rights to edit this file, and OPMI_CC = gcc doesn't change compiler.



UPDATE3

Environmental variable CC = gcc doesn't help
$ export CC=gcc
$ echo $CC
gcc
$ make clean $$ make
...icc:...errors




UPDATE4

...but export OMPI_CC=gcc does finally help (thanks to sharth). I should one day remember that these are different things...

Despite that the binary was created, I got the following bye-bye message
/opt/intel/fce/9.1.036/lib/libimf.so: warning: warning: feupdateenv is not implemented and will always fail

解决方案
See http://www.open-mpi.org/faq/?category=mpi-apps#override-wrappers-after-v1.0.

                        
这篇关于如何强制OpenMPI使用GCC而不是ICC？是否需要重新编译OpenMPI？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！