FIX: gpu node build

env/merlin/HyQuas/spack.yaml

@@ -1,6 +1,6 @@
 spack:
   concretizer:
-    unify: true
+    unify: when_possible
   include:
   - sysconfigs/config.yaml
   - sysconfigs/compilers.yaml
@@ -8,7 +8,11 @@ spack:
   repos:
   - .
   specs:
-  - hyquas@main%gcc+cuda cuda_arch=61 ~mpi+micro_bench+eval_pp backend=mix ^openmpi
+  - openmpi@4.0.5%gcc+cuda fabrics=ucx,xpmem,knem,ofi,cma schedulers=slurm ^ucx@1.13.0
+    ^hwloc@2.7.1 ^knem@1.1.4 ^xpmem@2.6.3 ^pmix@4.1.2
+  - cuda@11.0.2
+  - hyquas@main%gcc+cuda cuda_arch=80 ~mpi+schedule+use_double+micro_bench+eval_pp~disable_assert
+    backend=mix mat_size=7 ^cuda@11.0.2
   develop:
     hyquas:
       path: /data/user/germann_e/HyQuas