Added Summit files

ORNL/Summit/README.md

+Summit
+======
+
+
+Programming environment
+-----------------------
+
+Any version of gcc should be working on Summit. Summit provides the
+spectrum-mpi package as MPI implementation. When building source codes,
+you should load the relevant gcc as follow:
+
+```
+$ module swap xl gcc/9.1.0
+```
+
+The `spack.yaml` file in this directory uses gcc 9.1.0.
+
+Networking
+----------
+
+Mercury should use the `ofi+verbs;ofi_rxm` transport method in Mercury.
+Libfabric should be compiled with the `+verbs` and `+rxm` variants.
+
+
+Job management
+--------------
+
+Summit uses the lsbatch workload manager. `job.lfs` is an example
+of job file. Please modify the header (lines starting with `#BSUB`)
+to use your project allocation and set relevant parameters. You can
+refer to [the documenattion here](https://docs.olcf.ornl.gov/systems/summit_user_guide.html#running-jobs)
+for more information on how to configure such a job script.
+
+Once modified, the job script may be submitted as follows.
+
+```
+$ bsub ./job.lfs
+```

ORNL/Summit/job.lfs

+#!/bin/bash
+#BSUB -P CSC332
+#BSUB -J margo
+#BSUB -o margo.o%J
+#BSUB -W 10
+#BSUB -nnodes 2
+
+# disable MR cache in libfabric; still problematic as of libfabric 1.10.1
+export FI_MR_CACHE_MAX_COUNT=0
+# use shared recv context in RXM; should improve scalability
+export FI_OFI_RXM_USE_SRX=1
+
+jsrun -a 1 -n 2 -r 1 -c ALL_CPUS ./margo-p2p-latency -i 100000 -n "ofi+verbs;ofi_rxm://"
+jsrun -a 1 -n 2 -r 1 -c ALL_CPUS ./margo-p2p-bw -x 1048576 -n "ofi+verbs;ofi_rxm://" -c 1 -D 20

ORNL/Summit/spack.yaml

+spack:
+  specs:
+  - mochi-margo%gcc@9.1.0
+  - mercury@master # 2.0.0rc1 doesn't build; remove this line when 2.0.0 comes out
+  concretization: together
+  compilers:
+  - compiler:
+      paths:
+        cc: /sw/summit/gcc/9.1.0-alpha+20190716/bin/gcc
+        cxx: /sw/summit/gcc/9.1.0-alpha+20190716/bin/g++
+        f77: /sw/summit/gcc/9.1.0-alpha+20190716/bin/gfortran
+        fc: /sw/summit/gcc/9.1.0-alpha+20190716/bin/gfortran
+      operating_system: rhel7
+      target: ppc64le
+      modules:
+      - gcc/9.1.0
+      environment: {unset: []}
+      extra_rpaths: []
+      flags: {}
+      spec: gcc@9.1.0
+  repos:
+  - /ccs/home/mdorier1/sds-repo
+  packages:
+    all:
+      compiler: [gcc@9.1.0]
+      providers:
+        mpi: [spectrum-mpi]
+        pkgconfig: [pkg-config]
+      buildable: true
+      version: []
+      target: []
+    spectrum-mpi:
+      externals:
+      - spec: spectrum-mpi@10.3.1.2%gcc%9.1.0
+        modules:
+        - spectrum-mpi/10.3.1.2-20200121
+      buildable: false
+      version: []
+      target: []
+      providers: {}
+      compiler: []
+    openssl:
+      externals:
+      - spec: openssl@1.0.2k
+        prefix: /usr
+      buildable: false
+      version: []
+      target: []
+      providers: {}
+      compiler: []
+    autoconf:
+      externals:
+      - spec: autoconf@2.69
+        prefix: /usr
+      buildable: false
+      version: []
+      target: []
+      providers: {}
+      compiler: []
+    automake:
+      externals:
+      - spec: automake@1.13.4
+        prefix: /usr
+      buildable: false
+      version: []
+      target: []
+      providers: {}
+      compiler: []
+    libtool:
+      externals:
+      - spec: libtool@2.4.2
+        prefix: /usr
+      buildable: false
+      version: []
+      target: []
+      providers: {}
+      compiler: []
+    ucx:
+      externals:
+      - spec: ucx@1.5.1
+        prefix: /usr
+      buildable: false
+      version: []
+      target: []
+      providers: {}
+      compiler: []
+    libnl:
+      externals:
+      - spec: libnl@3.3.0
+        modules:
+        - libnl/3.3.0
+      buildable: false
+      version: []
+      target: []
+      providers: {}
+      compiler: []
+    rdma-core:
+      externals:
+      - spec: rdma-core@20
+        prefix: /usr
+      buildable: false
+      version: []
+      target: []
+      providers: {}
+      compiler: []
+    mercury:
+      variants: ~boostsys
+      buildable: true
+      version: []
+      target: []
+      providers: {}
+      compiler: []
+    libfabric:
+      variants: fabrics=verbs,rxm
+      buildable: true
+      version: []
+      target: []
+      providers: {}
+      compiler: []
+  view: true