diff --git a/env/sles15/aarch64/admin/unstable/spack.yaml b/env/sles15/aarch64/admin/unstable/spack.yaml
index 0b82739..57604a6 100644
--- a/env/sles15/aarch64/admin/unstable/spack.yaml
+++ b/env/sles15/aarch64/admin/unstable/spack.yaml
@@ -19,11 +19,9 @@ spack:
   - gcc_13.2.0:
     - dssp@2.3.0/xfc2pth
   - gcc_14.2.0:
-    - osu-micro-benchmarks@7.5/vzy564r
-  - gcc_12.3:
-    - py-torch@2.5.1/3x5w7m6
-    - py-torchvision@0.20.1/iry6pm2
-    - py-torchaudio@2.5.1/mn4tmhm
+    - osu-micro-benchmarks@7.5/mit3iil
+    - osu-micro-benchmarks@7.5/6ycu464
+    - aws-ofi-nccl@1.13.0/nz3b3yk
   - gcc_12.3_openmpi:
     - gromacs@2024.1/x33hfjx
     - cp2k@2024.3/m3eow6e #+cuda
@@ -33,6 +31,9 @@ spack:
     - relion@5.0.0/wk4d62r
   - gcc_13.2_openmpi:
     - opal-x@fixSolverUnits/ttg7vdz
+  - gcc_14.2_openmpi:
+    - py-torchvision@0.20.1/ysfcgu5
+    - py-torchaudio@2.5.1/trrglyu
   - nvhpc_24.11_openmpi:
     - quantum-espresso@7.4/oed4w6w  #+cuda +mpigpu hdf5=parallel
   include:
@@ -53,7 +54,11 @@ spack:
           environment:
             set:
               SLURM_MPI_TYPE: pmix
-              OMPI_MCA_mtl_ofi_disable_hmem: 'true'
+        openmpi@main:
+          environment:
+            set:
+              SLURM_MPI_TYPE: pmix
+              FI_HMEM_CUDA_USE_DMABUF: '1'
         core_compilers:
         - gcc@=7.5.0
   specs:
@@ -66,9 +71,6 @@ spack:
   - matrix:
     - [$gcc_7.5.0]
     - ['%gcc@7.5.0']
-  - matrix:
-    - [$gcc_12.3]
-    - ['%gcc@12.3']
   - matrix:
     - [$gcc_13.2.0]
     - ['%gcc@13.2.0']