diff --git a/.github/workflows/build_and_run_cirrus.yml b/.github/workflows/build_and_run_cirrus.yml
new file mode 100644
index 000000000..2d59be7b4
--- /dev/null
+++ b/.github/workflows/build_and_run_cirrus.yml
@@ -0,0 +1,96 @@
+name: Build and run CAM-SIMA on CIRRUS
+
+permissions:
+  contents: read
+
+on:
+  push:
+    branches:
+      - development
+  pull_request:
+    branches:
+      - development
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build-and-run-on-CIRRUS:
+    name: Run ${{ matrix.image }} on ${{ matrix.runner }}
+    env:
+      TMP_DIR: tmp
+      TMP_OUTPUT: case_output.log
+    strategy:
+      fail-fast: false
+      matrix:
+        test_type: [ SMS_Ln2 ]
+        compset: [ FPHYStest ]
+        res: [ ne3pg3_ne3pg3_mg37 ]
+        test_config: [ outfrq_rrtmgp_cirrus_gpu ]
+        image: [ ubuntu24.04_nvhpc25.7_openmpi5.0.8_cuda12.9:e9f55f1 ]
+        include:
+          - image: ubuntu24.04_nvhpc25.7_openmpi5.0.8_cuda12.9:e9f55f1
+            runner: gha-runner-gpu-camsima
+            compiler: nvhpc
+    runs-on: ${{ matrix.runner }}
+    environment: CI-tests-on-CIRRUS
+    container:
+      image: hub.k8s.ucar.edu/cam-sima/${{ matrix.image }}
+      options: ${{ matrix.runner == 'gha-runner-gpu-camsima' && '--gpus all' }}
+      env:
+        NVIDIA_DRIVER_CAPABILITIES: compute,utility
+      credentials:
+        username: ${{ secrets.hub_user || 'dummy-user' }}
+        password: ${{ secrets.hub_password || 'dummy-password' }}
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Checkout push code
+        uses: actions/checkout@v6
+
+      - name: Set up some git configurations
+        run: |
+          git config --global user.email "example_user@example.com"
+          git config --global user.name "example_user"
+
+      - name: Checkout individual components
+        run: |
+          ./bin/git-fleximod -C "${GITHUB_WORKSPACE}" update
+
+      - name: Build and run ${{ matrix.test_type }} test of ${{ matrix.compset }} at ${{ matrix.res }} resolution
+        run: |
+          export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$PIO/lib:$NETCDF_FORTRAN_PATH/lib:$NETCDF_C_PATH/lib:$LAPACK/lib:$LAPACK/lib64:$PNETCDF/lib"
+          if [ "${{ matrix.runner }}" = "gha-runner-gpu-camsima" ]; then
+            export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$CUDA_ROOT/lib64:$CUDA_ROOT/lib64/stubs"
+          fi
+          cd cime/scripts
+          ./create_test "${{ matrix.test_type }}.${{ matrix.res }}.${{ matrix.compset }}.cirrus_${{ matrix.compiler }}.cam-${{ matrix.test_config }}" --output-root "/$TMP_DIR/ci_test" --no-batch 2>&1 | tee "$TMP_OUTPUT"
+
+      - name: Check the test PASS/FAIL status
+        if: always()
+        run: |
+          cd /$TMP_DIR/ci_test
+          STATUS_OUTPUT=$(./cs.status.*)
+          echo "$STATUS_OUTPUT"
+          OVERALL_STATUS=$(echo "$STATUS_OUTPUT" | grep -oP 'Overall:\s*\K\w+')
+          if [ "$OVERALL_STATUS" = "PASS" ]; then
+            echo "Test passed"
+          else
+            echo "Test FAILED (Overall status: ${OVERALL_STATUS:-not found})"
+            exit 123
+          fi
+
+      - name: Upload logs to GitHub artifacts when the CI test fails
+        if: failure() 
+        uses: actions/upload-artifact@v7
+        with:
+          name: logs.${{ matrix.test_type }}.${{ matrix.compset }}.${{ matrix.compiler }}.${{ matrix.runner }}
+          path: |
+            /"$TMP_DIR"/ci_test/"${{ matrix.test_type }}.${{ matrix.res }}.${{ matrix.compset }}.cirrus_${{ matrix.compiler }}.cam-${{ matrix.test_config }}.*"/bld/atm.bldlog*
+            /"$TMP_DIR"/ci_test/"${{ matrix.test_type }}.${{ matrix.res }}.${{ matrix.compset }}.cirrus_${{ matrix.compiler }}.cam-${{ matrix.test_config }}.*"/bld/cesm.bldlog*
+            /"$TMP_DIR"/ci_test/"${{ matrix.test_type }}.${{ matrix.res }}.${{ matrix.compset }}.cirrus_${{ matrix.compiler }}.cam-${{ matrix.test_config }}.*"/run/cesm.log*
+            /"$TMP_DIR"/ci_test/"${{ matrix.test_type }}.${{ matrix.res }}.${{ matrix.compset }}.cirrus_${{ matrix.compiler }}.cam-${{ matrix.test_config }}.*"/run/atm.log*
+          retention-days: 7
\ No newline at end of file
diff --git a/.gitmodules b/.gitmodules
index a9dff09cd..ed73b06cf 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -32,7 +32,7 @@
 [submodule "ccs_config"]
         path          = ccs_config
         url           = https://github.com/ESMCI/ccs_config_cesm.git
-        fxtag         = ccs_config_cesm1.0.72
+        fxtag         = ccs_config_cesm1.0.76
         fxrequired    = ToplevelRequired
         fxDONOTUSEurl = https://github.com/ESMCI/ccs_config_cesm.git
 [submodule "cdeps"]
diff --git a/ccs_config b/ccs_config
index bd3990122..ee6e502c7 160000
--- a/ccs_config
+++ b/ccs_config
@@ -1 +1 @@
-Subproject commit bd39901220166f8f8d7368cdf5aad8b704df3602
+Subproject commit ee6e502c79ce4aef6fefa13293f0b8823e5a7a84
diff --git a/cime_config/testdefs/testmods_dirs/cam/outfrq_rrtmgp_cirrus_gpu/shell_commands b/cime_config/testdefs/testmods_dirs/cam/outfrq_rrtmgp_cirrus_gpu/shell_commands
new file mode 100644
index 000000000..fa42c41f8
--- /dev/null
+++ b/cime_config/testdefs/testmods_dirs/cam/outfrq_rrtmgp_cirrus_gpu/shell_commands
@@ -0,0 +1,13 @@
+./xmlchange NTASKS=4
+./xmlchange NTHRDS=1
+./xmlchange ROOTPE='0'
+./xmlchange ROF_NCPL=$(./xmlquery --value ATM_NCPL)
+./xmlchange GLC_NCPL=$(./xmlquery --value ATM_NCPL)
+./xmlchange TIMER_DETAIL='6'
+./xmlchange TIMER_LEVEL='999'
+./xmlchange GPU_TYPE=a10
+./xmlchange OPENACC_GPU_OFFLOAD=TRUE
+./xmlchange OVERSUBSCRIBE_GPU=TRUE
+./xmlchange NGPUS_PER_NODE=1
+./xmlchange CAM_CONFIG_OPTS="--dyn none --physics-suites rrtmgp"
+./xmlchange RUN_STARTDATE=1979-01-01
diff --git a/cime_config/testdefs/testmods_dirs/cam/outfrq_rrtmgp_cirrus_gpu/user_nl_cam b/cime_config/testdefs/testmods_dirs/cam/outfrq_rrtmgp_cirrus_gpu/user_nl_cam
new file mode 100644
index 000000000..f1be88f35
--- /dev/null
+++ b/cime_config/testdefs/testmods_dirs/cam/outfrq_rrtmgp_cirrus_gpu/user_nl_cam
@@ -0,0 +1,25 @@
+! these are CPU FHISTC_LTso snapshots
+ncdata = '/glade/sima_baselines/cam_sima_test_snapshots/cam_ne3pg3_fhistc_ltso_rrtmgp_derecho_gnu_before_c20251013.nc'
+ncdata_check = '/glade/sima_baselines/cam_sima_test_snapshots/cam_ne3pg3_fhistc_ltso_rrtmgp_derecho_gnu_after_c20251013.nc'
+
+! tolerances for testing (currently have high tolerance due to CPU snapshots)
+ncdata_check_err = .true.
+min_difference = 1e-08
+
+! vertical levels in snapshot
+pver = 58
+
+! Do radiation on every timestep we're testing
+irad_always=3
+
+! diagnostic output
+hist_output_frequency;h1: 1*nsteps
+hist_precision;h1: REAL64
+hist_add_inst_fields;h1: HR
+! Cloud output
+hist_add_inst_fields;h1: TOT_CLD_VISTAU,TOT_ICLD_VISTAU,ICE_ICLD_VISTAU,LIQ_ICLD_VISTAU
+! Longwave diagnostic output
+hist_add_inst_fields;h1: QRL,QRLC,FLNT,FLNTC,FLUT,FLUTC,LWCF,FLN200,FLN200C,FLNR,FLNS,FLNSC,FLDS,FLDSC,FUL,FDL,FULC,FDLC
+! Shortwave diagnostic fields
+hist_add_inst_fields;h1: SOLIN,QRS,QRSC,FSNT,FSNTC,FSNTOA,FSNTOAC,SWCF,FSUTOA,FSN200,FSN200C,FSNR,SOLL,SOLS,SOLLD,SOLSD
+hist_add_inst_fields;h1: FSNS,FSNSC,FSDS,FSDSC,FUS,FDS,FUSC,FDSC
diff --git a/cime_config/testdefs/testmods_dirs/cam/outfrq_rrtmgp_cirrus_gpu/user_nl_cpl b/cime_config/testdefs/testmods_dirs/cam/outfrq_rrtmgp_cirrus_gpu/user_nl_cpl
new file mode 100644
index 000000000..083110452
--- /dev/null
+++ b/cime_config/testdefs/testmods_dirs/cam/outfrq_rrtmgp_cirrus_gpu/user_nl_cpl
@@ -0,0 +1,5 @@
+! Set fixed orbital parameters
+orb_mode='fixed_parameters'
+orb_eccen = 0.
+orb_obliq = 0.
+orb_mvelp = 0.