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Licence

MPC is available under the CeCILL-C license, which is a French transposition of the LGPL and is fully LGPL-compatible.

Install from Sources

Please refer to the building instructions on how to install MPC.

There are two flavors of MPC as follows:

light: dependencies are not included and downloaded if needed (when using the ./installmpc script);

full: a version including all dependencies (for the default configuration) such version is recommended for offline systems.

MPC_4.2.0 (digest)

Download links:

light: mpcframework-4.2.0-light.tar.gz 2.8 MB (digest)
Full: mpcframework-4.2.0.tar.gz 235 MB (digest)

Changelog:

Compilation: new wrappers: mpicc++ and mpif90 supporting privatization
OpenMP:
- Added fibers to OpenMP tasks
- Fix OMP Tool support
- Added interoperation between MPI/OpenMP
- Refactored OpenMP task runtime (memory management, dependencies, tasks priorities)
MPI
- adding message queue
- new pairwise alltoall algorithm
- Session: new support
CONFIG: add intracomm collective communications config switch
UPGRADE upgrade to autopriv@0.8.0 then to autopriv@0.9.1
PMIX: detection and execution improvements
Many fixed bugs in communication layers & privatization

MPC_4.1.0 (digest)

Download links:

light: mpcframework-4.1.0-light.tar.gz 2.7 MB (mirror, digest)
Full: mpcframework-4.1.0.tar.gz 212 MB (mirror, di gest)

Changelog :

Active Message engine based on libffi
PRRTE implement support for the PMIx standard runtime
Add libfabric support (OFI)
Add new configuration system inside MPC (only at runtime)
Autopriv dependency has been renamed to mpc-compiler-additions
Add OMP 5.0 memory management support (includes HWLOC 2+ support)
Move to HWLOC 2+
MPIT rewrite mirroring the new configuration system
Full communicator / Group system rewrite
MPI 4.0 Split topology support
Collective factorization and rewrite
Bugfix on persistent collectives
Expose MPC’s modularity in PKGCONFIG / CMAKE
Improved DNS resolution for TCP
Topological collectives support
Move to mpc-compiler-additions 0.7.0 with GCC 10.2.0
Workshare support
OMPT improvements
General bugfixes and documentation

MPC_4.0.0 (Beta) (digest)

Starting from this version MPC comes in two flavors:

light: dependencies are not included and downloaded if needed (when using the ./installmpc script);
full: a version including all dependencies (for the default configuration) such version is recommended for offline systems.

Download links:

light: mpcframework-4.0.0-light.tar.gz 8.1 MB (mirror, digest)
Full: mpcframework-4.0.0.tar.gz 196 MB (mirror, digest)

This is a BETA release. This release breaks retro-compatibility.

MPC is now modular and comes in several components:
- lowcomm : component handling and providing the networks interfaces
- threads : component handling and providing the user-level thread scheduler
- mpi : component handling and providing the MPI standard API
- mpiio : component handling and providing the IO part of the MPI standard API
- openmp : component handling and providing the OpenMP standard API
- fortran : component handling and providing the Fortran interface for the above parallel programming APIs
- … and other internal components
New features:
- PMIX: PMIX is now supported through --with-pmix
- PRIV: Support for new GCCs (using now external autopriv) up to 10.2.0 (using --gcc-version=X.X.X)
- STATUS: the mpc_status command can be used to print current MPC configuration
- BUILD: once installed with ./installmpc MPC can be reconfigured with ./reconfigure in the build directory. MPC is now longer in an mpcframework subdirectory
Changed features:
- BUILD: Installation process compatible with Spack to manage package dependencies
- BUILD: MPC now relies on autotools as its build system
- BUILD: It is possible to directly call ./configure to use MPC in a modular way
- DEPS: dependencies can be downloaded on demand, a light version is a version not providing the dependencies. ./installmpc --download-missing-deps can be used to retrieve the dependencies for a given configuration. Conversely a full version includes all dependencies for the default configuration
- COMM: communicator management was fully rewritten. The MPI_Comm is now a pointer (instead of an integer)
- MPCRUN: mpcrun has been fully rewritten
- MPIIO: MPI-IO support (ROMIO) is now integrated in MPC
- FORTRAN: the Fortran interface is now external and optional (MPC_Fortran)
Deprecated features:
- mpcrun: several options from mpcrun were deprecated they should now be no-op
- installmpc: several options from ./installmpc were deprecated they should now be no-op
Removed features:
- mpc_compiler_manager: the mpc_compiler_manager command is no longer provided. MPC is now compiled against a single compiler
- mpc_icc and compiler-specific wrappers: MPC now provides only mpc_{cc,cxx,f77} and mpi{cc,cxx,f77} wrappers
- PRIV: all privatization has been externalized in autopriv, including, compilers, plugins, TLS library and privatized getopt
Fixed features:
- COMM: Default communicator attributes were fixed (APP_NUM, MPI_IO, MPI_HOST)
- COLL: fixed several collectives
- COMM: Major fixes in communicator management (free, creation and reuse)
- MISC: less contention on large SMP (various optimizations)
- MISC: various fixes in the lowcomm and MPI layers

MPC_3.4.0 (digest)

MPI:
- Optimizations and corrections of nonblocking collectives
- Bugfix on virtual topologies (MPI_Cart_*)
OpenMP:
- Improved OMPT support
- Bugfix on tasks with dependencies
Network/communication layers
- Support of MPI Hardware-enabled operations through Portals4 driver
Privatization / compilers
- MPC default privatizing compiler is now GCC 7.3.0
Active Message
- Integration of custom Active Messages relying on gRPC approach
Misc.
- Addition of changelog.md file
- New doc structure through Markdown
- Many other small optimizations and bug fixes

MPC in a Virtual Machine

MPC is available, preinstalled in a virtual machine with both GNU and Intel compilers. Please download the OVA file from http://www.hpclinux.org.

Older Releases

MPC_3.3.1 (digest)

Optimizations:
- Message latency
- Message progress with copy engine
Bugfixes:
- MPI wrappers (mpirun)
- NBCs, Collectives, Communicators
General source-code cleanup

MPC_3.3.0 (digest)

MPI standard :
- C/R support (Shmem, TCP & IB handlings)
- Collective algorithms optimizations
- NBC communication progress improvements
- Shared-memory shortcut set qfor intra-node comms

OpenMP standard:
- Support for OMP_PLACES
- Tasking bug fixes
- OMPT Stabilization
Communication layer :
- Full rewrite for the Portals 4 driver (only process-mode)
Privatization:
- GCC 7.2.0 compatibility (not set as default)
Miscs:
- Spack recipes for MPC, and patched GCC
- Fix for older Autotools
- Process-mode performance optimizations
- mpc_compiler_manger optimizations and Fortran bug fixes
- Improve installmpc procedure when GCC is not required
- Docker recipes for CentOS/Debian
- New mpcrun options related to placement debugging
- Various bug fixes
- Documentation

MPC_3.2.0 (http mirror) (digest)

This is a development release
MPI standard:
- Support for MPI RMA (3.1)
- MPI-T Support
- Fortran 2008 modules
OpenMP standard:
- Support for the GOMP ABI
- Support for OMP tasks with dependencies
- OMPT Support
- Several bug-fixes
Privatization:
- Support for privatized CUDA contexts and privatization of Cuda programs using a dedicated compiler wrappers (mpc_nvcc)
- Fix support for optimized TLS with icc
- Update to GCC 6.2 of the privatizing compiler
- Initial support for ARM
- Several bug-fixes
MPI Bugfixes/Optimizations:
- Shared-memory optimization of collectives
- Stabilization of the NBCs
- Several bug-fixes
Miscs:
- Add a process mode for the installation (–mpc-process-mode)
- On the fly Fortran module generation
- Enhance compiler manager and install management
- Add an “mpc_cleaner” command
- For now TBB has been disabled by default

MPC 3.1.0 (http mirror) (digest)

Rewrite of the TLS/HLS support:
- Support for all linker level optimizations
- Definition of new C and C++ keywords
- Outlining of the exTLS library separating TLS from MPC
C privatization plugin in GCC:
- Full support for global variable privatization in C
- Support for dynamic intializers in C to handle some TLS edge cases
Major bugfixing in OpenMP interface
New compiler selector (from command line)

MPC 3.0.0 (http mirror) (digest)

Major MPI Features:
- Integration of ROMIO and MPI-IO
- Integration of Non-Blocking Collectives (NBC) (excluding IO)
- Add Fortran90 support (.mod)
MPI Improvements:
- Support for heterogeneous data-types in collectives
- Collectives on inter-communicators and IN_PLACE related fixes
- Various improvements on data-types and collectives
- All collective algorithms were simplified to be completely rewritten state of the art (soon)
- Request management in the MPI interface was optimized
- Fixes on MPI topologies
- Various Bugfixes
OpenMP:
- Fixes in the Intel OpenMP interface
- Corrections on topology support
Communication layer:
- Generic Multi-rail support with gates (from XML configuration file)
- Support for Portals 4
- Support for SHM
- Addition of a generic device detection engine with distance matrix (HWLOC-based)
- Improved topological polling in Infiniband (from device detection)
- Outline of a « low-level » communication interface (cont. p2p messages and RDMA)
- Add low-level RDMA (for IB and Portals) and implement emulated calls
Runtime:
- Support for a privatized version of Getopt
- Internal implementation of asynchronous IO for old libc (AIO threads are launched with small stacks)
- Add support for a library mode for embedding inside another MPI runtime