diff --git a/tests/libs/blas/blas.py b/tests/libs/blas/blas.py
index 82b93e1..14a7c6c 100644
--- a/tests/libs/blas/blas.py
+++ b/tests/libs/blas/blas.py
@@ -150,11 +150,11 @@ def set_reference(self):
         else:
             self.reference = {
                 "cirrus-ex:compute": {
-                    "normal": (16.5, -0.15, None, "Gflops/s"),
+                    "normal": (15.0, -0.15, None, "Gflops/s"),
                     "transpose": (19.8, -0.15, None, "Gflops/s"),
                 },
                 "cirrus-ex:login": {
-                    "normal": (16.75, -0.15, None, "Gflops/s"),
+                    "normal": (15.0, -0.15, None, "Gflops/s"),
                     "transpose": (16.75, -0.15, None, "Gflops/s"),
                 },
             }
diff --git a/tests/synth/mpi_osu/osu_benchmarks.py b/tests/synth/mpi_osu/osu_benchmarks.py
index d8e2939..d873751 100644
--- a/tests/synth/mpi_osu/osu_benchmarks.py
+++ b/tests/synth/mpi_osu/osu_benchmarks.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 """
-MPI OSU benchmarks
+MPI OSU benchmarks - skip CCE (Cray compilers) as OSU fails to build with CCE
 # Based on work by:
 #   Copyright 2016-2021 Swiss National Supercomputing Centre (CSCS/ETH Zurich)
 #   ReFrame Project Developers. See the top-level LICENSE file for details.
@@ -43,7 +43,6 @@ class OSUBuild(rfm.CompileOnlyRegressionTest):
     valid_systems = ["archer2:compute", "cirrus:compute", "cirrus-ex:compute"]
     valid_prog_environs = [
         "PrgEnv-gnu",
-        "PrgEnv-cray",
         "PrgEnv-aocc",
         "PrgEnv-intel",
         "gcc",
@@ -79,7 +78,6 @@ class OSUBenchmarkTestBase(rfm.RunOnlyRegressionTest):
     valid_systems = ["archer2:compute", "cirrus:compute", "cirrus-ex:compute"]
     valid_prog_environs = [
         "PrgEnv-gnu",
-        "PrgEnv-cray",
         "PrgEnv-aocc",
         "PrgEnv-intel",
         "gcc",