What is mpicc

May 4, 2009 · Good morning. Thank you very much for your help. Any mpi program, we will compile using mpicc. thats what i meant mpicc. Any C file that has mpi calls, we will compile using mpicc program_name. I think mpicc is just a wrapper function which uses exiting compiler but links the mpi library.

What is MPI? MPI is a library of routines that can be used to create parallel programs in C or Fortran77. Standard C and Fortran include no constructs ...Your CPU has two physical cores and two hardware threads per core for a total of four hardware threads. Whether your program will run better with two MPI processes (-np 2) or with four (-np 4) depends mainly on whether it is compute-bound or not.mpirun -np 4 starts four copies of the program as four separate OS processes from the same executable. It is the same as starting four times a text ...Another program then is used to do an installation and to check that both MPICH and the other tools (such as upshot and mpicc) work correctly. For networks ...MPICH compiler (mpicc and mpicxx) and mpirun; gcc and g++; Common developer tools (make, wget, curl, etc.) How to use. Run the following command: $ docker run --rm -it -v $(pwd):/project mfisherman/mpich It will automatically download the docker image to your system and run it.Open MPI is an open-source implementation of the Message Passing Interface which allows programmers to write software that runs on several machines simultaneously. Furthermore it allows these copies of the program to communicate/cooperate with each other to say… share the load of an intensive calculation amongst each other or, daisy-chain the ...May 5, 2014 · mpicc, mpic++, mpif90, mpif77, etc. are all just wrappers around the actual system compiler. Any option that the wrapper does not recognise as its own gets passed to the actual compiler. You can see what is being invoked behind the scenes by calling mpicc with the -showme option: $ mpicc -showme gcc ... <lots of options> ... mpicc, mpicxx,mpif90; Level-one optimization specifies local optimization (-O1). The compiler performs scheduling of basic blocks as well as register allocation. This optimization level is a good choice when the code is very irregular; that is it contains many short statements containing IF statements and the program does not contain loops (DO ...

Jul 25, 2020 · When you type a command on the command line, you’re basically telling the shell to run an executable file with the given name. In Linux, these executable programs like ls, find, file and others, usually live inside several different directories on your system. Any file with executable permissions stored in these directories can be run from any location.How to Compile MPI Code. Before continuing, please make sure that the openmpi or intelmpi module is loaded (go here to see how to load/switch modules).. There are several so called MPI "compiler wrappers", e.g. mpicc.These take care of including the correct MPI libraries for the programming language you are using.04-10-2014 02:34 AM 4,682 Views Solved Jump to solution 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 pro_name [MPI_MAX_PROCESSOR_NAME]; MPI_Init (&argc,&argv); MPI_Comm_rank (MPI_COMM_WORLD,&myid);@Jean-FrançoisFabre, I suggest only closing questions for the stated reason that are due to one-off, incidental typos, which makes such questions unlikely to be of interest to others.By contrast, here we're dealing with a case where a misconfiguration causes subtle symptoms that (a) others may plausibly run into and (b) are worth explaining. While my answer hopefully explains the problem and ...Running without mpirun/mpiexec is called "singleton MPI_INIT" and is part of the MPI recommendations for high quality implementations, found under §10.5.2 in the latest MPI standard document:. A high-quality implementation will allow any process (including those not started with a "parallel application" mechanism) to become an MPI process by calling MPI_INIT.The currently used optimization level is -O2. ** IMPORTANT NOTE: Remember that this only affects the compilation of the MPICH library and is not used in the wrappers (mpicc and friends) that are used to compile your applications or other libraries. This optimization level can be changed with the --enable-fast option passed to configure.The MPICH project is a widely portable open source implementation of the MPI-4.0 standard from the Argonne National Laboratory.. This wiki is primarily intended for NERSC users who wish to use upstream MPICH on Perlmutter. Using MPICH at NERSC¶. Currently the mpich module is built with the GNU compiler suite available with PrgEnv-gnu (the default PE).

mpicc -hostfile -<filename> While running wite the following on the terminal prompt: mpirun -hostfile -np <#> Although be weary of the last note,it isnt often needed and the file extention of the hostfile may become a problem with certain architectures , such as my own x86.The currently used optimization level is -O2. ** IMPORTANT NOTE: Remember that this only affects the compilation of the MPICH library and is not used in the wrappers (mpicc and friends) that are used to compile your applications or other libraries. This optimization level can be changed with the --enable-fast option passed to configure.CC=g++ # compile everything with g++ main.o : CC=mpiCC # compile main.o with mpiCC The above uses target-specific variables. When compiling main.o it replaces the value of CC with mpiCC. Please note, the convention is that CC variable is the C compiler, whereas CXX is the C++ one. Same applies to flags, CFLAGS vs CXXFLAGS.@user3629249 Thanks for the help. I was able to compile and run it after specifying the include path as you suggested. But I couldn't compile it directly with mpicc, instead I used -showme flag with mpicc and it generated a compiling command line with gcc followed by -lmpi. I was able to compile the program with that one only. -Basics To use Open MPI, you must first load the Open MPI module with the compiler of your choice. For example, if you want to use the GCC compiler, use the command module load openmpi/gcc To compile the file, use the Open MPI compiler wrapper that goes with your chosen file type.1. Allocate 2 servers our of your cluser using slurm. 2. Make sure that the hpc-x gcc module is available and loaded. ... hpcx-1.9/gcc ... 3. Check the MPI compiler. 4. Follow MPI Hello World · MPI Tutorial to clone the git and compile mpi-hello-world application.

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--disable-wrapper-runpath / --disable-wrapper-rpath: By default, the wrapper compilers (e.g., mpicc) will explicitly add "runpath" and "rpath" linker flags when linking user executables on systems that support them.That is, the created executables will include a filesystem path reference to the location of Open MPI's libraries in the application executable itself.mpicc -v I have tried this, and I get this output: mpicc for MPICH2 version 1.2.1p1 Using built-in specs. Target: x86_64-linux-gnu Thread model: posix gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1) So I guess I have MPICH2 version 1.2.1p1. But can I know from this that for sure that MPICH2 version 1.2.1p1 is currently installed?I.e. renaming mpicc to mpicc.openmpi will require you to also rename mpicc-wrapper-data.txt to mpicc.openmpi-wrapper-data.txt. Open MPI's mpirun is simply a symlink to orterun. Renaming the symlink should be enough.5. Use CMAKE_PREFIX_PATH variable to set search path. Best practice is set that variable in command line interface: mkdir build cd build cmake -G "Unix Makefiles" .. -DCMAKE_PREFIX_PATH=path_to_mpi_lib. Anyway you can set the following variables for locating MPI before find_package command (description from FindMPI.cmake):

Setting up WSL. On recent releases of Windows, WSL is enabled by default and all you need to do is install a distribution under it. We'll begin by downloading the Ubuntu Distribution from the Microsoft Store. Open the store from the start menu and search for Ubuntu 18.04 or click here. Tap on "Get" to install WSL's Ubuntu Distro.Open MPI compiler (mpicc and mpicxx) and mpirun; gcc and g++; Common developer tools (make, wget, curl, etc.) How to use. Run the following command: $ docker run --rm -it -v $(pwd):/project mfisherman/openmpi It will automatically download the docker image to your system and run it.I am trying to create a package with external MPI on PSC Bridges. Spack can find the module correctly, and I can build with %intel ^mvapich2, but for other compiler and MPI when configuring there "configure: error: C compiler cannot crea...Mpicc or mpicxx uses GCC (or other compilers) as the backend compiler but sets up all of the environmental parameters needed for successful compilation. The following command should be used to compile the program: cd (to where you save your files) mpicc -o Helloword Helloword.c ...You can look for packages that have mpicc as a file or directory with dnf provides '*/mpicc'. N.B.:When using Cygwin terminal and using either mpicc or mpirun the compiler sees it but outside of cygwins terminal it does not see the two commands. I think I am suppose to add something to my path but I am unsure as to what. - MatthewConsequently I have locally built a "mpirun (Open MPI) 4.1.0" which does not crash. I would now like to make the freshly installed version (located in /opt/openmpi-4.1.0) the system standard for execution and linking. I believe that doing so is a job for update-alternatives. The output from "update-alternatives --query " is:May 13, 2023 · which mpicc which mpif90 如果显示了其路径，则说明安装顺利完成了。 5.这时候，进入到最开始解压的文件夹mpich-3.4.2中，查看里面所有目录，你会看到里面有examples文件，打开examples文件夹，测试一下hello是否能顺利运行。 ls -a cd examplesOct 4, 2019 · From the package repositories, install an MPI implementation such as Open MPI (I don't use OpenSUSE myself so I don't know what the name of the package is, but I'm sure you'll find it if you use the search functionality of the package manager). That will install the compiler wrappers like mpicc, mpifort, mpif90 and so on.

Description. This command can be used to compile and link MPI programs written in C. It provides the options and any special libraries that are needed to compile and link MPI …

The MPICC, chaired by Ms Sanyukta Samaddar, Adviser (SDG) has members from relevant Line Ministries and Departments, namely Ministry/ Department of Power, WCD, Telecommunication, MoSPI, Rural Devleopment, Petroleum & Natural Gas, Food & Public Distribution, Drinking Water & Sanitation, Education, Housing & Urban Affairs, Health & Family Welfare ...Introduction. In this tutorial we learn how to install mpich on CentOS 8.. What is mpich. MPICH is a high-performance and widely portable implementation of the Message Passing Interface (MPI) standard (MPI-1, MPI-2 and MPI-3). Dhirendra, This is the script I used to build pnetcdf 1.6.1 with Intel MPI v4.X and v5.X. ----- #!/bin/bash BASE=/home/Craig.Tierney/apps/pnetcdf/ # Set the parallel ...According to Webster’s New World Dictionary, “epic is a long narrative poem in a dignified style about the deeds of a traditional or historical hero or heroes; typically a poem like Iliad or the Odyssey with certain formal characteristics.”An epic is much like a ballad in all its features. However, its length is one thing that differentiates the epic from the ballad.Overview mpicc is a convenience wrappers for the underlying C compiler. Translation of an Open MPI program requires the linkage of the Open MPI-specific libraries which may not reside in one of the standard search directories of ld(1). It also often requires the inclusion of header files what may also not be found in a standard location.I suspect that some "core" MPI support needs detected and added to vtk_requested_modules, not just the group manipulation. That appears to do the trick. Thanks. If the answer solved the problem, please, mark it as a solution. I'm trying to update the Fedora VTK package to 9.2.0.rc1 and getting the following error: + CC=mpicc + export CC ...Second question: Do you call mpicc manually or do you call it from the Makefile? PS.: Just in case: mpicc looks like compiler to me. You might have put the projects call chain upside down. The compiler builds the machine code. But when all the compiler runs with their parameter lists and file lists and inter-file dependencies become to complex ...Using mpicc, mpicxx and mpif90 will call the GNU compilers. Running with MPI. mpirun command launches the parallel job. For help with mpirun, please consult the manpages (man mpirun) or run mpirun --help. The important parameter is the number of MPI processes specification (-np).mpicc <progname>.c -o <execname> example mpicc greetingsm.c -o greetingsm running it mpirun -np <# processes> -machinefile <machinefilename> <execname> example mpirun -np 12 -machinefile kc_machines greetingsm 6 / 20. Introduction: MPI and MPICH Machine file specfies nodes you want to useA central line-associated bloodstream infection (CLABSI) is a laboratory-confirmed bloodstream infection not related to an infection at another site that develops within 48 hours of central line placement. Of all the healthcare-associated infections, CLABSIs are associated with a high-cost burden, accounting for approximately $46,000 …

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722-724 Romford Road, Manor Park, London, E12 6BT Phone: 020 8514 7772 Web: www.mpicc.org.ukmpicc -c foo.c To link the output and make an executable, use mpicc -o foo foo.o Combining compilation and linking in a single command mpicc -o foo foo.c is a convenient way to build simple programs. See Also mpif77, mpireconfig Location:mpicc-g-Wall-std = c11 collective-communication-broadcast. c-o collective-communication-broadcast. When you have the code compiling, try to run with: mpiexec-np 2./ collective-communication-broadcast. Use clues from the compiler and the comments in the code to change the code so it compiles and runs. Try to get all ranks to report success :-)MS-MPI v10.1.3 (June 2023) MS-MPI v10.1.3 includes the following improvements and fixes. Download MS-MPI v10.1.3 from the Microsoft Download Center. Fix for assigning affinities to mpi worker processes on Windows 11 and Windows Server 2022. On these OSes affinities are being assigned through CPU sets, and not through Affinity masks.mpicc hello.c -o hello you will create an executable file called hello, which you can execute by using the mpirun command as in the following session segment: $ mpirun -np 4 hello Hello world Hello world Hello world Hello world $ When the program starts, it consists of only one process, sometimes called the "parent", "root", or "master" process.If you use a MPI implementation providing a mpicc compiler wrapper (e.g., MPICH, Open MPI), it will be used for compilation and linking. This is the preferred and easiest way of building MPI for Python. If mpicc is located somewhere in your search path, simply run the build command: 1 Answer. Just for the record: after a little more research as well as some tests on my own system, I figured out that mpich will use whichever GNU compiler is default on your system. Hence you can have multiple gcc versions installed on your system (e.g. sudo apt install gcc-7 gcc-8 g++-7 g++-8 ), and manage them using update-alternatives. A ...Oct 29, 2020 · Saved searches Use saved searches to filter your results more quickly24‏/10‏/2011 ... mpiCC myprog.c. Interactive MPI Runs. Some systems allow users to run an MPI program interactively. You do this with the mpirun command:Wrong openMPI version linked. Closed. @tdsmith. $ brew info openmpi. open-mpi: stable 1.8.6 (bottled), HEAD. High performance message passing library.mpicc is a wrapper script around gcc that sets the proper include and library paths for MPI. Use the following command to compile your code: Use the following command to compile your code: mpicc ASD.c -o ASD.outAn epic is a long narrative poem that is elevated and dignified in theme, tone, and style. As a literary device, an epic celebrates heroic deeds and historically (or even cosmically) important events. An epic usually focuses on the adventures of a hero who has qualities that are superhuman or divine, and on whose very fate often depends on the ... ….

$ mpicc -o mpi-pi pi.c /tmp/ccwuQwDw.o: In function `main': pi.c:(.text+0x15f): undefined reference to `sqrt' collect2: ld returned 1 exit status. Solution: Surya, you have to link math library during the compilation as shown below: $ mpicc -o a.out pi.c -lm. The libm.so will be located under /usr/lib. However, the location might vary from ...Assuming that you are using gcc, to set the compile time search path you need to use the compiler's -L flag. -Ldir Add directory dir to the list of directories to be searched for -l. So for example if you have installed the libraries into /usr/local/openmpi/lib, modify your gcc command line to. -L /usr/local/openmpi/lib -lmpi_usempi -lmpi_mpifh ...To compile a single file foo.c, use mpicc -c foo.c To link the output and make an executable, use mpicc -o foo foo.o Combining compilation and linking in a single command mpicc -o foo foo.c is a convenient way to build simple programs. SELECTING A PROFILING LIBRARYName Description; MPIEXEC_AFFINITY: For HPC Pack 2008 and HPC Pack 2008 R2: Specifies whether to set the affinity mask for each of the processes that the mpiexec command starts to a single core. This environment variable corresponds to the /affinity parameter of the mpiexec command. A value of 1 indicates that the affinity mask should be set for each of the processes that the mpiexec command ...@user3629249 Thanks for the help. I was able to compile and run it after specifying the include path as you suggested. But I couldn't compile it directly with mpicc, instead I used -showme flag with mpicc and it generated a compiling command line with gcc followed by -lmpi. I was able to compile the program with that one only. -Using MPI with C. Parallel programs enable users to fully utilize the multi-node structure of supercomputing clusters. Message Passing Interface (MPI) is a standard used to allow several different processors on a cluster to communicate with each other. In this tutorial we will be using the Intel C++ Compiler, GCC, IntelMPI, and OpenMPI to ... mpicc -c foo.c To link the output and make an executable, use mpicc -o foo foo.o Combining compilation and linking in a single command mpicc -o foo foo.c is a …The question is mpicc is c compiler and mpic++ is c++ compiler, so if yours is a c program, compiling it with C++ compiler is not a recommendable I think. Share Follow1 Answer. Just for the record: after a little more research as well as some tests on my own system, I figured out that mpich will use whichever GNU compiler is default on your system. Hence you can have multiple gcc versions installed on your system (e.g. sudo apt install gcc-7 gcc-8 g++-7 g++-8 ), and manage them using update-alternatives. A ...Apr 2, 2017 · 订阅专栏. I usually use the Intel MPI Benchmark (IMB) as a quick test to check everything is ok from a network point of view (connectivity and performance) My test cluster for today: OpenMPI version: 1.6.3. Mellanox OFED version: MLNX_OFED_LINUX-1.5.3-4.0.8 (OFED-1.5.3-4.0.8) Clustering suite: IBM Platform HPC 3.2 cluster (RHEL 6.2) Nodes: What is mpicc, You don't need to include cuda.h and cuda_runtime.h in that file, but according to my understanding of mpi, you do need to include mpi.h in that file. With this compile command: nvcc -arch=sm_35 -dc dyn_pal.cu -o dynpal.o -lcudadevrt it's not necessary to provide -lcudadevrt switch. That is a linker switch and you are not linking anything with ..., 5. Use CMAKE_PREFIX_PATH variable to set search path. Best practice is set that variable in command line interface: mkdir build cd build cmake -G "Unix Makefiles" .. -DCMAKE_PREFIX_PATH=path_to_mpi_lib. Anyway you can set the following variables for locating MPI before find_package command (description from FindMPI.cmake):, shell$ cc file1.o file2.o `mpicc -showme:link` -o my_mpi_program NOTES. It is possible to make the wrapper compilers multi-lib aware. That is, the libraries and includes specified may differ based on the compiler flags specified (for example, with the GNU compilers on Linux, a different library path may be used if -m32 is seen versus -m64 being ..., Join Epic Games at GDC 2023 for the State of Unreal, insightful tech talks, and the chance to play the latest Unreal Engine games at our booths on the show floor. Find out more. A thriving community of creators. Creators and developers around the world hone their real-time skills in remarkable, groundbreaking ways. Check out some of our ..., 21‏/04‏/2023 ... Add the MPICH or Open MPI key to .soft; Compile your MPI code; Submitting a parallel job; Warning about the $OBJECT_MODE environment variable ..., Nov 15, 2022 · Saved searches Use saved searches to filter your results more quickly, Nov 27, 2021 · As the nodal Ministry for MPI, NITI Aayog is also responsible for engaging with the publishing agencies of the index; ranking States and Union Territories based on their performance and has also constituted an inter-ministerial MPI Coordination Committee (MPICC) to consult twelve Line Ministries mapped to each National MPI indicator. 2., Basics To use Open MPI, you must first load the Open MPI module with the compiler of your choice. For example, if you want to use the GCC compiler, use the command module load openmpi/gcc To compile the file, use the Open MPI compiler wrapper that goes with your chosen file type., Compiling MPI Applications ===== MPI applications should be compiled using the Open MPI "wrapper" compilers: C programs: mpicc your-code.c C++ …, mpiCC (and therefore mpic++) is similar, but invokes the native C++ compiler instead. The LAM Team strongly encourages using mpicc and mpiCC instead of attempting to link to the LAM libraries manually. This allows the specific implementation of LAM to change without forcing changes to linker directives in users' Makefiles (the specific set of ..., mpicc \-c foo.c To link the output and make an executable, use mpicc \-o foo foo.o Combining compilation and linking in a single command mpicc \-o foo foo.c is a convenient way to build simple programs. Selecting a Profiling Library The \-profile=name argument allows you to specify an MPI profiling library to be used. name can have two forms: , error: command 'mpicc' failed with exit status 1 So it seems now it's a problem that I'm not using sudo, plus it's still having trouble with mpicc. I have made sure that LD_LIBRARY_PATH includes /usr/local/openmpi/lib , and the command 'which mpicc' returns /usr/local/openmpi/bin/mpicc . Any other ideas?, mpicc -g -o binary_file_name source_file.c For example, for a program PrimePipe.c, make an executable prp this way: mpicc -g -o prp PrimePipe.c (You may need to specify the full path to prp.) (If you wish to use C++, use mpicxx instead of mpicc.) Running MPICH2 application:, 9.2. Customizing wrapper compiler behavior. The Open MPI wrapper compilers are driven by text files that contain, among other things, the flags that are passed to the underlying compiler. These text files are generated automatically for Open MPI and are customized for the compiler set that was selected when Open MPI was configured; it is not ... , As people around the globe and from different walks of life come together in PICC for meetings, conventions and celebrations of life’s milestones, PICC offers gender-and socially-inclusive customer relations, facilities and services to its internal and external clients through its gender responsive, highly competent, and professional human resource in support to …, 2. Some packages in the Ubuntu repositories provide pre-compiled binaries of shared libraries ( *.so ). For example, the package fftw2 provides the FFTW library (version 2), including the MPI-related library files /usr/lib/libfftw_mpi.so.2 and /usr/lib/librfftw_mpi.so.2. This evokes the question of which of the numerous MPI libraries these ..., Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about Teams, 8818-5235. 0956-885-3714. Application for Amendment/ Conversion of SEC Licenses of Foreign Corporations/ Withdrawal of SEC License/ Substitution of Resident Agent. [email protected]. Inquiries on Status of Issuance of Certificates of Amendment of Articles of Incorporation, By-laws/ License., checking whether mpicc configured... yes. checking MPI include dir... Please input the absolute path for mpich include dir. but fter i path to mpich i faced to bellow error:, mpicc is a convenience wrappers for the underlying C compiler. Translation of an Open MPI program requires the linkage of the Open MPI-specific libraries which …, mpicc is a convenience wrappers for the underlying C compiler. Translation of an Open MPI program requires the linkage of the Open MPI-specific libraries which may not reside in one of the standard search directories of ld(1). It also often requires the inclusion of header files what may also not be found in a standard location., Abstract. INS strives to align the Standards with guidelines and clinical practice recommendations based on the most current evidence available. In our effort to provide consistent information and minimize confusion, this article outlines 4 corrections that will supersede recommendations published in January 2021., Show the commands that would be used without running them. -cxx=name. instead of the default choice. Use this only if the compiler is compatible with the MPICH library (see below) -config=name. Load a configuration file for a particular compiler. This allows a single mpicxx command to be used with multiple compilers., Oct 29, 2020 · Saved searches Use saved searches to filter your results more quickly, Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site, Configuring mpich. The next step is to configure mpich for your particular computing environment. mpich can be built for a variety of parallel computers and ..., 5. Use CMAKE_PREFIX_PATH variable to set search path. Best practice is set that variable in command line interface: mkdir build cd build cmake -G "Unix Makefiles" .. -DCMAKE_PREFIX_PATH=path_to_mpi_lib. Anyway you can set the following variables for locating MPI before find_package command (description from FindMPI.cmake):, The executables of the benchmark were compiled with make CC=/usr/bin/mpicc CXX=/usr/bin/mpicxx. The cluster was set up based on this tutorial. (What I did differently is that I installed OpenMPI instead of MPICH.) The type of the AWS instances is t3a.xlarge. According to this spec the network performance is up to 5 Gbps (i.e. 625 MB/s)., Modify the .la files from the libraries you about the ABI, so that dependency_libs is empty. Though that breaks linking against these libraries using libtool (not the mpicc wrapper) requesting a static application. Both have obvious drawbacks. But lets here your ideas here., Apr 24, 2015 · 1. Those three commands which mpicc, mpicc -show and (the erroring) mpicc -V commands are doing nothing. The first just shows you where the binary is. The second just shows you what is presumably the command that it will run. The last is just passing -V to gcc which doesn't understand it and gcc then errors as it was given no files to operate on. , The currently used optimization level is -O2. ** IMPORTANT NOTE: Remember that this only affects the compilation of the MPICH library and is not used in the wrappers (mpicc and friends) that are used to compile your applications or other libraries. This optimization level can be changed with the --enable-fast option passed to configure. , CUDA-Aware MPI¶. HPE Cray MPI is a CUDA-aware MPI implementation. This means that the programmer can use pointers to GPU device memory in MPI buffers, and the MPI implementation will correctly copy the data in GPU device memory to/from the network interface card's (NIC's) memory, either by implicitly copying the data first to host memory and then copying the data from host memory to the NIC ..., This allows a single mpicc command to be used with multiple compilers. -compile_info - Show the steps for compiling a program. This option can be used to see what options and include paths are used by mpicc. -link_info - Show the steps for linking a program. This optoin can be used to see what options and libraries are used by mpicc.