diff --git a/env/sles15/aarch64/admin/stable/spack.yaml b/env/sles15/aarch64/admin/stable/spack.yaml
index c772cae..b38b152 100644
--- a/env/sles15/aarch64/admin/stable/spack.yaml
+++ b/env/sles15/aarch64/admin/stable/spack.yaml
@@ -28,6 +28,7 @@ spack:
           environment:
             set:
               SLURM_MPI_TYPE: 'pmix'
+              OMPI_MCA_mtl_ofi_disable_hmem: 'true'
   specs:
   - matrix:
     - [$gcc_12.3_mpich]
diff --git a/env/sles15/aarch64/admin/testing/spack.yaml b/env/sles15/aarch64/admin/testing/spack.yaml
index e8de833..9eadfd0 100644
--- a/env/sles15/aarch64/admin/testing/spack.yaml
+++ b/env/sles15/aarch64/admin/testing/spack.yaml
@@ -24,5 +24,6 @@ spack:
           environment:
             set:
               SLURM_MPI_TYPE: 'pmix'
+              OMPI_MCA_mtl_ofi_disable_hmem: 'true'
   specs: []
   view: false
diff --git a/env/sles15/aarch64/admin/unstable/spack.yaml b/env/sles15/aarch64/admin/unstable/spack.yaml
index 59431b5..facb139 100644
--- a/env/sles15/aarch64/admin/unstable/spack.yaml
+++ b/env/sles15/aarch64/admin/unstable/spack.yaml
@@ -32,6 +32,7 @@ spack:
           environment:
             set:
               SLURM_MPI_TYPE: 'pmix'
+              OMPI_MCA_mtl_ofi_disable_hmem: 'true'
   specs:
   - matrix:
     - [$gcc_7.5.0]
diff --git a/env/sles15/x86_64/admin/stable/spack.yaml b/env/sles15/x86_64/admin/stable/spack.yaml
index 6582f77..4516044 100644
--- a/env/sles15/x86_64/admin/stable/spack.yaml
+++ b/env/sles15/x86_64/admin/stable/spack.yaml
@@ -38,6 +38,7 @@ spack:
           environment:
             set:
               SLURM_MPI_TYPE: 'pmix'
+              OMPI_MCA_mtl_ofi_disable_hmem: 'true'
   specs:
   - matrix:
     - [$compilers]
diff --git a/env/sles15/x86_64/admin/testing/spack.yaml b/env/sles15/x86_64/admin/testing/spack.yaml
index 0272265..b27b5db 100644
--- a/env/sles15/x86_64/admin/testing/spack.yaml
+++ b/env/sles15/x86_64/admin/testing/spack.yaml
@@ -26,5 +26,6 @@ spack:
           environment:
             set:
               SLURM_MPI_TYPE: 'pmix'
+              OMPI_MCA_mtl_ofi_disable_hmem: 'true'
   specs: []
   view: false
diff --git a/env/sles15/x86_64/admin/unstable/spack.yaml b/env/sles15/x86_64/admin/unstable/spack.yaml
index 95ba006..c7bbdca 100644
--- a/env/sles15/x86_64/admin/unstable/spack.yaml
+++ b/env/sles15/x86_64/admin/unstable/spack.yaml
@@ -46,6 +46,7 @@ spack:
           environment:
             set:
               SLURM_MPI_TYPE: 'pmix'
+              OMPI_MCA_mtl_ofi_disable_hmem: 'true'
   specs:
   - matrix:
     - [$gcc_7.5.0]