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https://www.open-mpi.org/faq/
Rollup of ALL FAQ categories and questions General information about the Open MPI Project What kinds of systems / networks / run-time environments does Open MPI support?
https://bugzilla.redhat.com/show_bug.cgi?id=1506600
Description of problem: Facing issues with openmpi-1.10 receiving warning messages, however same behavior is not shown by openmpi-1.8 ----- WARNING: a request was made to bind a process. While the system supports binding the process itself, at least one node does NOT support binding memory to the process location.
https://www.open-mpi.org/
Open MPI is therefore able to combine the expertise, technologies, and resources from all across the High Performance Computing community in order to build the best MPI library available. Open MPI offers advantages for system and software vendors, application developers and computer science researchers.
https://stackoverflow.com/questions/11959906/openmp-and-numa-relation
Use a NUMA-aware memory allocator. Some colleagues of mine have thoroughly evaluated the NUMA behavious of different OpenMP runtimes and have specifically looked into the NUMA awareness of the Intel's implementation, but the articles are not published yet so I cannot provide you with a link.
https://devblogs.nvidia.com/introduction-cuda-aware-mpi/
If no variant of GPUDirect is available, for example if the network adapter does not support GPUDirect, the situation is a little bit more complicated. The buffer needs to be first moved to the pinned CUDA driver buffer and from there to the pinned buffer of the network fabric in the host memory of MPI Rank 0.
https://www.dcl.hpi.uni-potsdam.de/teaching/numasem/slides/NUMASem_OpenMPI.pdf
NUMA with Open MPI 14 A₀ A₁ A₂ A₃ A₁ A₂ A₃ A₀ ₁ ₂ ₃ ₁ ₂ A₃ scatter / gather data from all members to all members of a group (complete exchange) a variation on Gather where all members of …
https://software.intel.com/en-us/forums/intel-moderncode-for-parallel-architectures/topic/334402
With the number of cores increasing on the various OS platforms, in order to maximize efficiency when there are multiple jobs running on the same physical machine, I believe it would be in Intels best interest to support the rankfile syntax used by OpenMPI. This allows upstream schedulers to minimize numa-node fragmentation as jobs are onboarded and offboarded with differing timings.Author: Thewitness
http://on-demand.gputechconf.com/gtc/2014/presentations/S4589-openmpi-rdma-support-cuda.pdf
OPEN MPI WITH RDMA SUPPORT AND CUDA Rolf vandeVaart, NVIDIA . OVERVIEW ... The support is configured in if CUDA 6.0 cuda.h header file is detected. To check: ... GPU DIRECT RDMA SUPPORT – NUMA ISSUES Configure system so GPU and NIC …
https://github.com/open-mpi/ompi/issues/626
Jun 04, 2015 · Join GitHub today. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. ... OpenMPI:A request was made to bind to that would result in binding more processes than cpus on a resource. ... In some Linux distributions, the required support is contained in the ...
https://www.dell.com/support/article/us/en/04/sln313856/amd-epyc-stream-hpl-infiniband-and-wrf-performance-study
Summary The HPC and AI Innovation Lab has a new cluster with 32 AMD EPYC based systems interconnected with Mellanox EDR InfiniBand. As always, we are conducting performance evaluations on our latest cluster and wanted to share results. This blog covers memory bandwidth results from STREAM, HPL, InfiniBand micro-benchmark performance for latency and bandwidth, and WRF results from its …
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