if you have OPA cards, for openmpi you only need --with-ofi, you don't
need psm/psm2/verbs/ucx. but this assumes you're running a rhel based
distro and have installed the OPA fabric suite of software from
Intel/CornelisNetworks. which is what i have. perhaps there's
something really odd in debian or there's an incompatibility with the
older ofed drivers perhaps included with debian. unfortunately i
don't have access to a debian, so i can't be much more help
if i had to guess totally pulling junk from the air, there's probably
something incompatible with PSM and OPA when running specifically on
debian (likely due to library versioning). i don't know how common
that is, so it's not clear how flushed out and tested it is
On Wed, Jan 27, 2021 at 3:07 PM Patrick Begou via users
<users@lists.open-mpi.org> wrote:
>
> Hi Howard and Michael
>
> first many thanks for testing with my short application. Yes, when the
> test code runs fine it just show the max RSS size of rank 0 process.
> When it runs wrong it put a messages about each invalid value found.
>
> As I said, I have also deployed OpenMPI on various cluster (in DELL data
> center at Austin) when I was testing some architectures some months ago
> and nor on AMD/Mellanox_IB nor on Intel/Omni-path I got any problem. The
> goal was running my tests with same software stacks and be sure to be
> able to deploy my software stack on the selected solution.
> But as your clusters (and my small local clusters) they were all running
> RedHat (or similar Linux flavors) and a modern Gnu compiler (9 or 10).
> The university's cluster I have access is running Debian stretch and
> provides GCC6 as default compiler.
>
> I cannot ask for a different OS, but I can deploy a local gcc10 and
> build again OpenMPI. UCX is not available on this cluster, should I
> deploy a local UCX too ?
>
> Libpsm2 seams good:
> dahu103 : dpkg -l |grep psm
> ii libfabric-psm 1.10.0-2-1ifs+deb9 amd64 Dynamic PSM
> provider for user-space Open Fabric Interfaces
> ii libfabric-psm2 1.10.0-2-1ifs+deb9 amd64 Dynamic PSM2
> provider for user-space Open Fabric Interfaces
> ii libpsm-infinipath1 3.3-19-g67c0807-2ifs+deb9 amd64 PSM Messaging
> library for Intel Truescale adapters
> ii libpsm-infinipath1-dev 3.3-19-g67c0807-2ifs+deb9 amd64 Development
> files for libpsm-infinipath1
> ii libpsm2-2 11.2.185-1-1ifs+deb9 amd64 Intel PSM2
> Libraries
> ii libpsm2-2-compat 11.2.185-1-1ifs+deb9 amd64 Compat
> library for Intel PSM2
> ii libpsm2-dev 11.2.185-1-1ifs+deb9 amd64 Development
> files for Intel PSM2
> ii psmisc 22.21-2.1+b2 amd64 utilities
> that use the proc file system
>
> This will be my next try to install OpenMPI on this cluster.
>
> Patrick
>
>
> Le 27/01/2021 à 18:09, Pritchard Jr., Howard via users a écrit :
> > Hi Folks,
> >
> > I'm also have problems reproducing this on one of our OPA clusters:
> >
> > libpsm2-11.2.78-1.el7.x86_64
> > libpsm2-devel-11.2.78-1.el7.x86_64
> >
> > cluster runs RHEL 7.8
> >
> > hca_id: hfi1_0
> > transport: InfiniBand (0)
> > fw_ver: 1.27.0
> > node_guid: 0011:7501:0179:e2d7
> > sys_image_guid: 0011:7501:0179:e2d7
> > vendor_id: 0x1175
> > vendor_part_id: 9456
> > hw_ver: 0x11
> > board_id: Intel Omni-Path Host Fabric Interface
> > Adapter 100 Series
> > phys_port_cnt: 1
> > port: 1
> > state: PORT_ACTIVE (4)
> > max_mtu: 4096 (5)
> > active_mtu: 4096 (5)
> > sm_lid: 1
> > port_lid: 99
> > port_lmc: 0x00
> > link_layer: InfiniBand
> >
> > using gcc/gfortran 9.3.0
> >
> > Built Open MPI 4.0.5 without any special configure options.
> >
> > Howard
> >
> > On 1/27/21, 9:47 AM, "users on behalf of Michael Di Domenico via users"
> > <users-boun...@lists.open-mpi.org on behalf of users@lists.open-mpi.org>
> > wrote:
> >
> > for whatever it's worth running the test program on my OPA cluster
> > seems to work. well it keeps spitting out [INFO MEMORY] lines, not
> > sure if it's supposed to stop at some point
> >
> > i'm running rhel7, gcc 10.1, openmpi 4.0.5rc2, with-ofi,
> > without-{psm,ucx,verbs}
> >
> > On Tue, Jan 26, 2021 at 3:44 PM Patrick Begou via users
> > <users@lists.open-mpi.org> wrote:
> > >
> > > Hi Michael
> > >
> > > indeed I'm a little bit lost with all these parameters in OpenMPI,
> > mainly because for years it works just fine out of the box in all my
> > deployments on various architectures, interconnects and linux flavor. Some
> > weeks ago I deploy OpenMPI4.0.5 in Centos8 with gcc10, slurm and UCX on an
> > AMD epyc2 cluster with connectX6, and it just works fine. It is the first
> > time I've such trouble to deploy this library.
> > >
> > > If you have my mail posted the 25/01/2021 in this discussion at
> > 18h54 (may be Paris TZ) there is a small test case attached that show the
> > problem. Did you got it or did the list strip these attachments ? I can
> > provide it again.
> > >
> > > Many thanks
> > >
> > > Patrick
> > >
> > > Le 26/01/2021 à 19:25, Heinz, Michael William a écrit :
> > >
> > > Patrick how are you using original PSM if you’re using Omni-Path
> > hardware? The original PSM was written for QLogic DDR and QDR Infiniband
> > adapters.
> > >
> > > As far as needing openib - the issue is that the PSM2 MTL doesn’t
> > support a subset of MPI operations that we previously used the pt2pt BTL
> > for. For recent version of OMPI, the preferred BTL to use with PSM2 is OFI.
> > >
> > > Is there any chance you can give us a sample MPI app that reproduces
> > the problem? I can’t think of another way I can give you more help without
> > being able to see what’s going on. It’s always possible there’s a bug in
> > the PSM2 MTL but it would be surprising at this point.
> > >
> > > Sent from my iPad
> > >
> > > On Jan 26, 2021, at 1:13 PM, Patrick Begou via users
> > <users@lists.open-mpi.org> wrote:
> > >
> > >
> > > Hi all,
> > >
> > > I ran many tests today. I saw that an older 4.0.2 version of OpenMPI
> > packaged with Nix was running using openib. So I add the --with-verbs
> > option to setup this module.
> > >
> > > That I can see now is that:
> > >
> > > mpirun -hostfile $OAR_NODEFILE --mca mtl psm -mca
> > btl_openib_allow_ib true ....
> > >
> > > - the testcase test_layout_array is running without error
> > >
> > > - the bandwidth measured with osu_bw is half of thar it should be:
> > >
> > > # OSU MPI Bandwidth Test v5.7
> > > # Size Bandwidth (MB/s)
> > > 1 0.54
> > > 2 1.13
> > > 4 2.26
> > > 8 4.51
> > > 16 9.06
> > > 32 17.93
> > > 64 33.87
> > > 128 69.29
> > > 256 161.24
> > > 512 333.82
> > > 1024 682.66
> > > 2048 1188.63
> > > 4096 1760.14
> > > 8192 2166.08
> > > 16384 2036.95
> > > 32768 3466.63
> > > 65536 6296.73
> > > 131072 7509.43
> > > 262144 9104.78
> > > 524288 6908.55
> > > 1048576 5530.37
> > > 2097152 4489.16
> > > 4194304 3498.14
> > >
> > > mpirun -hostfile $OAR_NODEFILE --mca mtl psm2 -mca
> > btl_openib_allow_ib true ...
> > >
> > > - the testcase test_layout_array is not giving correct results
> > >
> > > - the bandwidth measured with osu_bw is the right one:
> > >
> > > # OSU MPI Bandwidth Test v5.7
> > > # Size Bandwidth (MB/s)
> > > 1 3.73
> > > 2 7.96
> > > 4 15.82
> > > 8 31.22
> > > 16 51.52
> > > 32 107.61
> > > 64 196.51
> > > 128 438.66
> > > 256 817.70
> > > 512 1593.90
> > > 1024 2786.09
> > > 2048 4459.77
> > > 4096 6658.70
> > > 8192 8092.95
> > > 16384 8664.43
> > > 32768 8495.96
> > > 65536 11458.77
> > > 131072 12094.64
> > > 262144 11781.84
> > > 524288 12297.58
> > > 1048576 12346.92
> > > 2097152 12206.53
> > > 4194304 12167.00
> > >
> > > But yes, I know openib is deprecated too in 4.0.5.
> > >
> > > Patrick
> > >
> > >
> >
> >
>
