Active Oldest Votes. As explained in this tutorial , you may also check the MPI version running the command: mpiexec --version or mpirun --version in your terminal. Improve this answer. Foad Foad 8, 8 8 gold badges 43 43 silver badges bronze badges. Demi-Lune 1, 2 2 gold badges 11 11 silver badges 20 20 bronze badges. Jonathan Dursi Jonathan Dursi 48k 8 8 gold badges silver badges bronze badges.
This is exactly what I was looking for. Semih Ozmen Semih Ozmen 5 5 silver badges 19 19 bronze badges. The former is certainly important when you're writing code, but the latter sort of information can be pretty important if you're trying to solve an implementation or configuration issue. MakisH MakisH 5 5 silver badges 16 16 bronze badges.
This is a very nice tip. Building Open MPI from a tarball defaults to building an optimized version. There is no need to do anything special. This allows Open MPI to be built in a different directory than where its source code resides helpful for multi-architecture builds. Some versions of make support parallel builds. The example above shows GNU make's " -j " option, which specifies how many compile processes may be executing at any given time.
See the source code access pages for more information. Changing this build behavior is controlled via command line options to Open MPI's configure script.
Similarly, you can build both static and shared libraries by simply specifying --enable-static and not specifying --disable-shared , if desired. Including components in libraries: Instead of building components as DSOs, they can also be "rolled up" and included in their respective libraries e.
This is controlled with the --enable-mca-static option. Automake uses a tightly-woven set of file timestamp-based dependencies to compile and link software. This will result in files with incorrect timestamps, and Automake degenerates into undefined behavior. Two solutions are possible: Ensure that the time between your network filesystem server and client s is the same.
This can be accomplished in a variety of ways and is dependent upon your local setup; one method is to use an NTP daemon to synchronize all machines to a common time server. Build on a local disk filesystem where network timestamps are guaranteed to be synchronized with the local build machine's time. Then you can run configure , make , and make install. Open MPI should then build and install successfully.
Ensure that when you run a new shell, no output is sent to stdout. For example, if the output of this simple shell script is more than just the hostname of your computer, you need to go check your shell startup files to see where the extraneous output is coming from and eliminate it : 1 2 3! This is usually an indication that configure succeeded but really shouldn't have. See this FAQ entry for one possible cause.
Open MPI uses a standard Autoconf "configure" script to probe the current system and figure out how to build itself. One of the choices it makes it which compiler set to use. However, this is easily overridden on the configure command line. Note that you can include additional parameters to configure , implied by the " Unexpected or undefined behavior can occur when you mix compiler suites in unsupported ways e.
Open MPI uses a standard Autoconf configure script to set itself up for building. Note that the flags you specify must be compatible across all the compilers. In particular, flags specified to one language compiler must generate code that can be compiled and linked against code that is generated by the other language compilers. These codes will be incompatible with each other, and Open MPI will build successfully.
The above command line will pass " -m64 " to all four compilers, and therefore will produce 64 bit objects for all languages. Bad Things then happen. Currently the only workaround is to disable shared libraries and build Open MPI statically.
For Googling purposes, here's an error message that may be issued when the build fails: 1 2 3 4 xlc: - command option --whole-archive is not recognized - passed to ld xlc: - command option --no-whole-archive is not recognized - passed to ld xlc: - file libopen-pal. The easiest way to work around them is simply to use the latest version of the Oracle Solaris Studio 12 compilers.
Apply Sun patch The PathScale compiler authors have identified a bug in the v3. With PathScale 3. Here's a proposed solution from the PathScale support team from July : The proposed work-around is to install gcc Newer versions of the compiler 4. We don't anticipate that this will be much of a problem for Open MPI users these days our informal testing shows that not many users are still using GCC 3. To build support for high-speed interconnect networks, you generally only have to specify the directory where its support header files and libraries were installed to Open MPI's configure script.
You can specify where multiple packages were installed if you have support for more than one kind of interconnect — Open MPI will build support for as many as it can. You tell configure where support libraries are with the appropriate --with command line switch. NOTE: Up through the v1. In the v1. You can verify that configure found everything properly by examining its output — it will test for each network's header files and libraries and report whether it will build support or not for each of them.
Examining configure 's output is the first place you should look if you have a problem with Open MPI not correctly supporting a specific network type. Last supported in the v1. Slurm support is built automatically; there is nothing that you need to do.
XGrid support is built automatically if the XGrid tools are installed. The method for configuring it is slightly different between Open MPI v1. For Open MPI v1. After Open MPI is installed, you should see two components named gridengine. Component versions may vary depending on the version of Open MPI 1. In general, the procedure is the same building support for high-speed interconnect networks , except that you use --with-tm.
Because of this, you may run into linking errors when Open MPI tries to create dynamic plugin components for TM support on some platforms. On this day, the latest version of OpenMPI is 4. Use wget or curl tool to download the tarball source from its official website to your Linux. Install gcc compiler using command skip this step if you have already installed gcc. Navigate to OpenMPI folder and setting up compilation configuration for install. And within each category, there are three sub-categories: Basic This sub-category is for parameters that everyone in this category will want to see -- even less-advanced end users, application tuners, and new OMPI developers.
Detailed This sub-category is for parameters that are generally useful, but users probably won't need to change them often. All This sub-category is for all other parameters.
Such parameters are likely fairly esoteric.
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