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"Only Intel MPI 5.x versions are supported." seems not correct. #20573

Closed chezhang closed 5 years ago

chezhang commented 5 years ago

RDMA-capable instances

MPI

Only Intel MPI 5.x versions are supported. Later versions (2017, 2018) of the Intel MPI runtime library are not compatible with the Azure Linux RDMA drivers.

Distributions

Ubuntu

  1. Install Intel MPI Library. Either purchase and download the library from Intel or download the free evaluation version. Only Intel MPI 5.x runtimes are supported.

Comment

I had a test with Intel MPI 2018 Update 1 (2018.1.163), and it works. (IMB-MPI1 pingpong could run between H16mr VMs with dapl). I did not find any abnormal result or behavior different with running with Intel MPI 5.1.3.223.

What does "Only Intel MPI 5.x versions are supported." mean ? Is it correct?

Document Details

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mimckitt commented 5 years ago

Thanks for the feedback! We are currently investigating and will update you shortly.

mimckitt commented 5 years ago

@chezhang I have assigned this to the author to review and update the doc as needed.

jonbeck7 commented 5 years ago

@MicahMcKittrick-MSFT please reassign to jack kabat

mimckitt commented 5 years ago

@jonbeck7 Jack is not listed in Github. @cynthn assign to you in the meantime.

amazingyyc commented 5 years ago

Does Ubuntu RDMA support openmpi or nccl?

msebolt commented 5 years ago

@chezang Article has been updated.

@amazingyyc See https://github.com/open-mpi/ompi/issues/5789 and https://github.com/horovod/horovod/issues/5.