diff --git a/configuration/scripts/cice.batch.csh b/configuration/scripts/cice.batch.csh
index bb2edc17e..63d5f9953 100755
--- a/configuration/scripts/cice.batch.csh
+++ b/configuration/scripts/cice.batch.csh
@@ -137,6 +137,23 @@ cat >> ${jobfile} << EOFB
 ###PBS -m be
 EOFB
 
+else if (${ICE_MACHINE} =~ blueback*) then
+if (${runlength} > 0) set queue = "standard"
+cat >> ${jobfile} << EOFB
+#SBATCH --job-name=${ICE_CASENAME}
+#SBATCH --account=${acct}
+#SBATCH --qos=${queue}
+#SBATCH --time=${batchtime}
+#SBATCH --nodes=${nnodes}
+#SBATCH --ntasks=${ntasks}
+#SBATCH --ntasks-per-node=${taskpernode}
+#SBATCH --constraint standard
+###SBATCH -e filename
+###SBATCH -o filename
+###SBATCH --mail-type FAIL
+###SBATCH --mail-user username@domain.com
+EOFB
+
 else if (${ICE_MACHINE} =~ narwhal*) then
 if (${runlength} <= 0) then
   set batchtime = "00:29:59"
diff --git a/configuration/scripts/cice.launch.csh b/configuration/scripts/cice.launch.csh
index f8eb0a5d2..533ecad9c 100755
--- a/configuration/scripts/cice.launch.csh
+++ b/configuration/scripts/cice.launch.csh
@@ -127,15 +127,15 @@ endif
 endif
 
 #=======
-else if (${ICE_MACHCOMP} =~ cori* || ${ICE_MACHCOMP} =~ perlmutter*) then
+else if (${ICE_MACHCOMP} =~ cori* || ${ICE_MACHCOMP} =~ perlmutter* || ${ICE_MACHCOMP} =~ blueback*) then
 if (${ICE_COMMDIR} =~ serial*) then
 cat >> ${jobfile} << EOFR
 #./cice >&! \$ICE_RUNLOG_FILE
-srun --cpu-bind=cores ./cice >&! \$ICE_RUNLOG_FILE
+srun --cpu-bind=cores --kill-on-bad-exit ./cice >&! \$ICE_RUNLOG_FILE
 EOFR
 else
 cat >> ${jobfile} << EOFR
-srun --cpu-bind=cores ./cice >&! \$ICE_RUNLOG_FILE
+srun --cpu-bind=cores -n ${ntasks} -c ${nthrds} --kill-on-bad-exit ./cice >&! \$ICE_RUNLOG_FILE
 EOFR
 endif
 
diff --git a/configuration/scripts/machines/Macros.blueback_aocc b/configuration/scripts/machines/Macros.blueback_aocc
new file mode 100644
index 000000000..194bb8736
--- /dev/null
+++ b/configuration/scripts/machines/Macros.blueback_aocc
@@ -0,0 +1,59 @@
+#==============================================================================
+# Macros file for NavyDSRC blueback, aocc compiler
+#==============================================================================
+
+CPP        := ftn -E
+CPPDEFS    := -DFORTRANUNDERSCORE -DNO_R16 ${ICE_CPPDEFS}
+CFLAGS     := -c -O2
+
+FIXEDFLAGS := -ffixed-form
+FREEFLAGS  := -ffree-form
+FFLAGS     := -byteswapio
+FFLAGS_NOOPT:= -O0
+
+ifeq ($(ICE_BLDDEBUG), true)
+  FFLAGS     += -O0 -g -fsanitize=integer-divide-by-zero,float-divide-by-zero,bounds
+else
+  FFLAGS     += -O2
+endif
+
+SCC   := cc 
+SFC   := ftn
+MPICC := cc
+MPIFC := ftn
+
+ifeq ($(ICE_COMMDIR), mpi)
+  FC := $(MPIFC)
+  CC := $(MPICC)
+else
+  FC := $(SFC)
+  CC := $(SCC)
+endif
+LD:= $(FC)
+
+# defined by module
+#NETCDF_PATH := $(NETCDF)
+#PNETCDF_PATH := $(PNETCDF)
+#PNETCDF_PATH := /glade/apps/opt/pnetcdf/1.3.0/intel/default
+#LAPACK_LIBDIR := /glade/apps/opt/lapack/3.4.2/intel/12.1.5/lib
+
+#PIO_CONFIG_OPTS:= --enable-filesystem-hints=gpfs 
+
+INCLDIR := $(INCLDIR)
+#INCLDIR += -I$(NETCDF_PATH)/include
+
+#LIB_NETCDF := $(NETCDF_PATH)/lib
+#LIB_PNETCDF := $(PNETCDF_PATH)/lib
+#LIB_MPI := $(IMPILIBDIR)
+#SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff
+
+ifeq ($(ICE_THREADED), true) 
+   LDFLAGS += -mp
+#   CFLAGS += -mp
+   FFLAGS += -mp
+else
+   LDFLAGS += -nomp
+#   CFLAGS += -nomp
+   FFLAGS += -nomp
+endif
+
diff --git a/configuration/scripts/machines/Macros.blueback_cray b/configuration/scripts/machines/Macros.blueback_cray
new file mode 100644
index 000000000..a0b13abcb
--- /dev/null
+++ b/configuration/scripts/machines/Macros.blueback_cray
@@ -0,0 +1,61 @@
+#==============================================================================
+# Macros file for NavyDSRC blueback, cray compiler
+#==============================================================================
+
+CPP        := ftn -e P
+CPPDEFS    := -DFORTRANUNDERSCORE -DNO_R16 ${ICE_CPPDEFS}
+CFLAGS     := -c -O2
+
+FIXEDFLAGS := -132
+FREEFLAGS  := 
+FFLAGS     := -hbyteswapio
+FFLAGS_NOOPT:= -O0
+LDFLAGS    := -hbyteswapio
+ 
+ifeq ($(ICE_BLDDEBUG), true)
+  FFLAGS     += -O0 -hfp0 -g -Rbcdps -Ktrap=fp
+else
+#  FFLAGS     += -O2 -hfp0     # -eo
+  FFLAGS     += -O1 -hfp0     # -eo
+endif
+
+SCC   := cc 
+SFC   := ftn
+MPICC := cc
+MPIFC := ftn
+
+ifeq ($(ICE_COMMDIR), mpi)
+  FC := $(MPIFC)
+  CC := $(MPICC)
+else
+  FC := $(SFC)
+  CC := $(SCC)
+endif
+LD:= $(FC)
+
+# defined by module
+#NETCDF_PATH := $(NETCDF)
+#PNETCDF_PATH := $(PNETCDF)
+#PNETCDF_PATH := /glade/apps/opt/pnetcdf/1.3.0/intel/default
+#LAPACK_LIBDIR := /glade/apps/opt/lapack/3.4.2/intel/12.1.5/lib
+
+#PIO_CONFIG_OPTS:= --enable-filesystem-hints=gpfs 
+
+INCLDIR := $(INCLDIR)
+#INCLDIR += -I$(NETCDF_PATH)/include
+
+#LIB_NETCDF := $(NETCDF_PATH)/lib
+#LIB_PNETCDF := $(PNETCDF_PATH)/lib
+#LIB_MPI := $(IMPILIBDIR)
+#SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff
+
+ifeq ($(ICE_THREADED), true) 
+   LDFLAGS += -fopenmp
+   CFLAGS += -fopenmp
+   FFLAGS += -fopenmp
+else
+   LDFLAGS += -hnoomp
+#   CFLAGS += -hnoomp
+   FFLAGS += -hnoomp
+endif
+
diff --git a/configuration/scripts/machines/Macros.blueback_gnu b/configuration/scripts/machines/Macros.blueback_gnu
new file mode 100644
index 000000000..17d0f4a3b
--- /dev/null
+++ b/configuration/scripts/machines/Macros.blueback_gnu
@@ -0,0 +1,71 @@
+#==============================================================================
+# Macros file for NavyDSRC blueback, gnu compiler
+#==============================================================================
+
+CPP        := ftn -E
+CPPDEFS    := -DFORTRANUNDERSCORE ${ICE_CPPDEFS}
+CFLAGS     := -c
+
+FIXEDFLAGS := -ffixed-line-length-132
+FREEFLAGS  := -ffree-form
+FFLAGS     := -fconvert=big-endian -fbacktrace -ffree-line-length-none -fallow-argument-mismatch
+FFLAGS_NOOPT:= -O0
+
+ifeq ($(ICE_BLDDEBUG), true)
+  # ffpe-trap=invalid produces an abort in hdf5 ~v1.14 which is fixed in 1.14.4.2
+  FFLAGS     += -O0 -g -fcheck=bounds -finit-real=nan -fimplicit-none -ffpe-trap=zero,overflow
+#  FFLAGS     += -O0 -g -fcheck=bounds -finit-real=nan -fimplicit-none -ffpe-trap=invalid,zero,overflow
+  CFLAGS     += -O0
+endif
+
+ifeq ($(ICE_COVERAGE), true)
+  FFLAGS   += -O0 -g -fprofile-arcs -ftest-coverage
+  CFLAGS   += -O0 -g -coverage
+  LDFLAGS  += -g -ftest-coverage -fprofile-arcs
+endif
+
+ifneq ($(ICE_BLDDEBUG), true)
+ifneq ($(ICE_COVERAGE), true)
+  FFLAGS   += -O2
+  CFLAGS   += -O2
+endif
+endif
+
+#SCC   := gcc
+#SFC   := gfortran
+SCC   := cc
+SFC   := ftn
+MPICC := cc
+MPIFC := ftn
+
+ifeq ($(ICE_COMMDIR), mpi)
+  FC := $(MPIFC)
+  CC := $(MPICC)
+else
+  FC := $(SFC)
+  CC := $(SCC)
+endif
+LD:= $(FC)
+
+# defined by module
+#NETCDF_PATH := $(NETCDF)
+#PNETCDF_PATH := $(PNETCDF)
+#PNETCDF_PATH := /glade/apps/opt/pnetcdf/1.3.0/intel/default
+#LAPACK_LIBDIR := /glade/apps/opt/lapack/3.4.2/intel/12.1.5/lib
+
+#PIO_CONFIG_OPTS:= --enable-filesystem-hints=gpfs 
+
+INCLDIR := $(INCLDIR)
+INCLDIR += -I$(NETCDF_PATH)/include
+
+LIB_NETCDF := $(NETCDF_PATH)/lib
+#LIB_PNETCDF := $(PNETCDF_PATH)/lib
+#LIB_MPI := $(IMPILIBDIR)
+SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff
+
+ifeq ($(ICE_THREADED), true) 
+   LDFLAGS += -fopenmp
+   CFLAGS += -fopenmp
+   FFLAGS += -fopenmp
+endif
+
diff --git a/configuration/scripts/machines/Macros.blueback_intel b/configuration/scripts/machines/Macros.blueback_intel
new file mode 100644
index 000000000..834b58b7b
--- /dev/null
+++ b/configuration/scripts/machines/Macros.blueback_intel
@@ -0,0 +1,61 @@
+#==============================================================================
+# Macros file for NavyDSRC blueback, intel compiler
+#==============================================================================
+
+CPP        := fpp
+CPPDEFS    := -DFORTRANUNDERSCORE ${ICE_CPPDEFS}
+CFLAGS     := -c -O2 -fp-model precise -fcommon
+
+FIXEDFLAGS := -132
+FREEFLAGS  := -FR
+FFLAGS     := -fp-model precise -convert big_endian -assume byterecl -ftz -traceback
+# -mcmodel medium -shared-intel
+FFLAGS_NOOPT:= -O0
+
+ifeq ($(ICE_BLDDEBUG), true)
+  # fpe0 produces an abort in hdf5 ~v1.14 which is fixed in 1.14.4.2
+  FFLAGS     += -O0 -g -check uninit -check bounds -check pointers -fpe1 -check noarg_temp_created
+#  FFLAGS     += -O0 -g -check uninit -check bounds -check pointers -fpe0 -check noarg_temp_created
+#  FFLAGS     += -O0 -g -check all -fpe0 -ftrapuv -fp-model except -check noarg_temp_created -init=snan,arrays
+else
+  FFLAGS     += -O2
+endif
+
+#SCC   := icx 
+#SFC   := ifort
+SCC   := cc
+SFC   := ftn
+MPICC := cc
+MPIFC := ftn
+
+ifeq ($(ICE_COMMDIR), mpi)
+  FC := $(MPIFC)
+  CC := $(MPICC)
+else
+  FC := $(SFC)
+  CC := $(SCC)
+endif
+LD:= $(FC)
+
+# defined by module
+#NETCDF_PATH := $(NETCDF)
+#PNETCDF_PATH := $(PNETCDF)
+#PNETCDF_PATH := /glade/apps/opt/pnetcdf/1.3.0/intel/default
+#LAPACK_LIBDIR := /glade/apps/opt/lapack/3.4.2/intel/12.1.5/lib
+
+#PIO_CONFIG_OPTS:= --enable-filesystem-hints=gpfs 
+
+INCLDIR := $(INCLDIR)
+INCLDIR += -I$(NETCDF_PATH)/include
+
+LIB_NETCDF := $(NETCDF_PATH)/lib
+#LIB_PNETCDF := $(PNETCDF_PATH)/lib
+#LIB_MPI := $(IMPILIBDIR)
+SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff
+
+ifeq ($(ICE_THREADED), true) 
+   LDFLAGS += -qopenmp
+   CFLAGS += -qopenmp
+   FFLAGS += -qopenmp
+endif
+
diff --git a/configuration/scripts/machines/Macros.blueback_nvhpc b/configuration/scripts/machines/Macros.blueback_nvhpc
new file mode 100644
index 000000000..47b4c59f0
--- /dev/null
+++ b/configuration/scripts/machines/Macros.blueback_nvhpc
@@ -0,0 +1,74 @@
+#==============================================================================
+# Makefile macros for NavyDSRC blueback, nvhpc compiler
+#==============================================================================
+
+CPP        := nvc -Mcpp
+CPPDEFS    := -DFORTRANUNDERSCORE -DNO_R16 ${ICE_CPPDEFS}
+CFLAGS     := -c -Kieee
+
+FIXEDFLAGS := -Mfixed
+FREEFLAGS  := -Mfree
+FFLAGS     := -Kieee -byteswapio -traceback 
+FFLAGS_NOOPT:= -O0
+
+ifeq ($(ICE_BLDDEBUG), true)
+#  FFLAGS   += -O0 -g -Ktrap=fp -Mbounds -Mchkptr
+#  FFLAGS   += -O0 -g -Ktrap=fp -Mbounds
+#  FFLAGS   += -O0 -Ktrap=fp -Mbounds -Mchkptr
+  # -Ktrap=fp produces an abort in hdf5 ~v1.14 which is fixed in 1.14.4.2
+  FFLAGS   += -O0
+#  FFLAGS   += -O0 -Ktrap=fp
+  CFLAGS   += -O0
+else
+#  FFLAGS   += -O2 -Mnofma -target=zen3
+  FFLAGS   += -O2
+  CFLAGS   += -O2
+endif
+
+#SCC   := nvc
+#SFC   := nvfortran
+#MPICC := mpicc
+#MPIFC := mpif90
+SCC   := cc
+SFC   := ftn
+MPICC := cc
+MPIFC := ftn
+
+ifeq ($(ICE_COMMDIR), mpi)
+  FC := $(MPIFC)
+  CC := $(MPICC)
+else
+  FC := $(SFC)
+  CC := $(SCC)
+endif
+LD:= $(FC)
+
+NETCDF_PATH := $(NETCDF)
+
+#PIO_CONFIG_OPTS:= --enable-filesystem-hints=gpfs 
+
+#INCLDIR := $(INCLDIR)
+
+LIB_NETCDF := $(NETCDF_PATH)/lib
+#LIB_PNETCDF := $(PNETCDF_PATH)/lib
+#LIB_MPI := $(IMPILIBDIR)
+
+#SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff -L$(LIB_PNETCDF) -lpnetcdf
+SLIBS   := -L$(LIB_NETCDF) -lnetcdf -lnetcdff
+
+ifeq ($(ICE_THREADED), true) 
+   LDFLAGS += -mp 
+   CFLAGS += -mp 
+   FFLAGS += -mp 
+endif
+
+ifeq ($(ICE_IOTYPE), pio1)
+   LIB_PIO := $(PIO)/lib
+   SLIBS   := $(SLIBS) -L$(LIB_PIO) -lpio
+endif
+
+ifeq ($(ICE_IOTYPE), pio2)
+   LIB_PIO := $(PIO)/lib
+   SLIBS   := $(SLIBS) -L$(LIB_PIO) -lpiof -lpioc
+endif
+
diff --git a/configuration/scripts/machines/env.blueback_aocc b/configuration/scripts/machines/env.blueback_aocc
new file mode 100644
index 000000000..a6bb2b538
--- /dev/null
+++ b/configuration/scripts/machines/env.blueback_aocc
@@ -0,0 +1,58 @@
+#!/bin/csh -f
+set inp = "undefined"
+if ($#argv == 1) then
+  set inp = $1
+endif
+
+if ("$inp" != "-nomodules") then
+
+source ${MODULESHOME}/init/csh
+
+module unload PrgEnv-cray
+module unload PrgEnv-gnu
+module unload PrgEnv-intel
+module unload PrgEnv-nvhpc
+module unload PrgEnv-aocc
+module load PrgEnv-aocc/8.5.0
+
+module unload aocc
+module load aocc/4.1.0
+
+module unload cray-mpich
+module unload mpi
+module unload openmpi
+module load cray-mpich/8.1.30
+#module load mpi/2021.11
+#module load openmpi/4.1.6
+
+module unload cray-hdf5
+module unload cray-hdf5-parallel
+module unload cray-netcdf-hdf5parallel
+module unload cray-parallel-netcdf
+module unload netcdf
+module load cray-netcdf/4.9.0.13
+module load cray-hdf5/1.14.3.1
+
+setenv NETCDF_PATH ${NETCDF_DIR}
+limit coredumpsize unlimited
+limit stacksize unlimited
+setenv OMP_STACKSIZE 128M
+setenv OMP_WAIT_POLICY PASSIVE
+setenv FI_CXI_RX_MATCH_MODE hybrid
+
+endif
+
+setenv ICE_MACHINE_MACHNAME blueback
+setenv ICE_MACHINE_MACHINFO "Cray EX4000 AMD Genoa, Slingshot-11 Interconnect"
+setenv ICE_MACHINE_ENVNAME intel
+setenv ICE_MACHINE_ENVINFO "AMD clang version 16.0.3 (CLANG: AOCC_4.1.0-Build#270 2023_07_10, cray-mpich/8.1.30, netcdf/4.9.0.13"
+setenv ICE_MACHINE_MAKE gmake
+setenv ICE_MACHINE_WKDIR $WORKDIR/CICE_RUNS
+setenv ICE_MACHINE_INPUTDATA /p/work1/projects/RASM/cice_consortium
+setenv ICE_MACHINE_BASELINE $WORKDIR/CICE_BASELINE
+setenv ICE_MACHINE_SUBMIT "sbatch "
+setenv ICE_MACHINE_ACCT P00000000
+setenv ICE_MACHINE_QUEUE "debug"
+setenv ICE_MACHINE_TPNODE 192    # tasks per node
+setenv ICE_MACHINE_BLDTHRDS 12
+setenv ICE_MACHINE_QSTAT "squeue "
diff --git a/configuration/scripts/machines/env.blueback_cray b/configuration/scripts/machines/env.blueback_cray
new file mode 100644
index 000000000..a396d6646
--- /dev/null
+++ b/configuration/scripts/machines/env.blueback_cray
@@ -0,0 +1,58 @@
+#!/bin/csh -f
+set inp = "undefined"
+if ($#argv == 1) then
+  set inp = $1
+endif
+
+if ("$inp" != "-nomodules") then
+
+source ${MODULESHOME}/init/csh
+
+module unload PrgEnv-cray
+module unload PrgEnv-gnu
+module unload PrgEnv-intel
+module unload PrgEnv-nvhpc
+module unload PrgEnv-aocc
+module load PrgEnv-cray/8.5.0
+
+module unload cce
+module load cce/18.0.0
+
+module unload cray-mpich
+module unload mpi
+module unload openmpi
+module load cray-mpich/8.1.30
+#module load mpi/2021.11
+#module load openmpi/4.1.6
+
+module unload cray-hdf5
+module unload cray-hdf5-parallel
+module unload cray-netcdf-hdf5parallel
+module unload cray-parallel-netcdf
+module unload netcdf
+module load cray-netcdf/4.9.0.13
+module load cray-hdf5/1.14.3.1
+
+setenv NETCDF_PATH ${NETCDF_DIR}
+limit coredumpsize unlimited
+limit stacksize unlimited
+setenv OMP_STACKSIZE 128M
+setenv OMP_WAIT_POLICY PASSIVE
+setenv FI_CXI_RX_MATCH_MODE hybrid
+
+endif
+
+setenv ICE_MACHINE_MACHNAME blueback
+setenv ICE_MACHINE_MACHINFO "Cray EX4000 AMD Genoa, Slingshot-11 Interconnect"
+setenv ICE_MACHINE_ENVNAME intel
+setenv ICE_MACHINE_ENVINFO "Cray Fortran/Clang 18.0.0, cray-mpich/8.1.30, netcdf/4.9.0.13"
+setenv ICE_MACHINE_MAKE gmake
+setenv ICE_MACHINE_WKDIR $WORKDIR/CICE_RUNS
+setenv ICE_MACHINE_INPUTDATA /p/work1/projects/RASM/cice_consortium
+setenv ICE_MACHINE_BASELINE $WORKDIR/CICE_BASELINE
+setenv ICE_MACHINE_SUBMIT "sbatch "
+setenv ICE_MACHINE_ACCT P00000000
+setenv ICE_MACHINE_QUEUE "debug"
+setenv ICE_MACHINE_TPNODE 192    # tasks per node
+setenv ICE_MACHINE_BLDTHRDS 12
+setenv ICE_MACHINE_QSTAT "squeue "
diff --git a/configuration/scripts/machines/env.blueback_gnu b/configuration/scripts/machines/env.blueback_gnu
new file mode 100644
index 000000000..3489fc17e
--- /dev/null
+++ b/configuration/scripts/machines/env.blueback_gnu
@@ -0,0 +1,58 @@
+#!/bin/csh -f
+set inp = "undefined"
+if ($#argv == 1) then
+  set inp = $1
+endif
+
+if ("$inp" != "-nomodules") then
+
+source ${MODULESHOME}/init/csh
+
+module unload PrgEnv-cray
+module unload PrgEnv-gnu
+module unload PrgEnv-intel
+module unload PrgEnv-nvhpc
+module unload PrgEnv-aocc
+module load PrgEnv-gnu/8.5.0
+
+module unload gcc
+module load gcc-native/13.2
+
+module unload cray-mpich
+module unload mpi
+module unload openmpi
+module load cray-mpich/8.1.30
+#module load mpi/2021.11
+#module load openmpi/4.1.6
+
+module unload cray-hdf5
+module unload cray-hdf5-parallel
+module unload cray-netcdf-hdf5parallel
+module unload cray-parallel-netcdf
+module unload netcdf
+module load cray-netcdf/4.9.0.13
+module load cray-hdf5/1.14.3.1
+
+setenv NETCDF_PATH ${NETCDF_DIR}
+limit coredumpsize unlimited
+limit stacksize unlimited
+setenv OMP_STACKSIZE 128M
+setenv OMP_WAIT_POLICY PASSIVE
+setenv FI_CXI_RX_MATCH_MODE hybrid
+
+endif
+
+setenv ICE_MACHINE_MACHNAME blueback
+setenv ICE_MACHINE_MACHINFO "Cray EX4000 AMD Genoa, Slingshot-11 Interconnect"
+setenv ICE_MACHINE_ENVNAME intel
+setenv ICE_MACHINE_ENVINFO "gfortran/gcc 13.3.0, cray-mpich/8.1.30, netcdf/4.9.0.13"
+setenv ICE_MACHINE_MAKE gmake
+setenv ICE_MACHINE_WKDIR $WORKDIR/CICE_RUNS
+setenv ICE_MACHINE_INPUTDATA /p/work1/projects/RASM/cice_consortium
+setenv ICE_MACHINE_BASELINE $WORKDIR/CICE_BASELINE
+setenv ICE_MACHINE_SUBMIT "sbatch "
+setenv ICE_MACHINE_ACCT P00000000
+setenv ICE_MACHINE_QUEUE "debug"
+setenv ICE_MACHINE_TPNODE 192    # tasks per node
+setenv ICE_MACHINE_BLDTHRDS 12
+setenv ICE_MACHINE_QSTAT "squeue "
diff --git a/configuration/scripts/machines/env.blueback_intel b/configuration/scripts/machines/env.blueback_intel
new file mode 100644
index 000000000..1618895c3
--- /dev/null
+++ b/configuration/scripts/machines/env.blueback_intel
@@ -0,0 +1,58 @@
+#!/bin/csh -f
+set inp = "undefined"
+if ($#argv == 1) then
+  set inp = $1
+endif
+
+if ("$inp" != "-nomodules") then
+
+source ${MODULESHOME}/init/csh
+
+module unload PrgEnv-cray
+module unload PrgEnv-gnu
+module unload PrgEnv-intel
+module unload PrgEnv-nvhpc
+module unload PrgEnv-aocc
+module load PrgEnv-intel/8.5.0
+
+module unload intel
+module load intel/2023.2.0
+
+module unload cray-mpich
+module unload mpi
+module unload openmpi
+module load cray-mpich/8.1.30
+#module load mpi/2021.11
+#module load openmpi/4.1.6
+
+module unload cray-hdf5
+module unload cray-hdf5-parallel
+module unload cray-netcdf-hdf5parallel
+module unload cray-parallel-netcdf
+module unload netcdf
+module load cray-netcdf/4.9.0.13
+module load cray-hdf5/1.14.3.1
+
+setenv NETCDF_PATH ${NETCDF_DIR}
+limit coredumpsize unlimited
+limit stacksize unlimited
+setenv OMP_STACKSIZE 128M
+setenv OMP_WAIT_POLICY PASSIVE
+setenv FI_CXI_RX_MATCH_MODE hybrid
+
+endif
+
+setenv ICE_MACHINE_MACHNAME blueback
+setenv ICE_MACHINE_MACHINFO "Cray EX4000 AMD Genoa, Slingshot-11 Interconnect"
+setenv ICE_MACHINE_ENVNAME intel
+setenv ICE_MACHINE_ENVINFO "ifort 2021.10.0 20230609, icx 2023.2.0.20230622, cray-mpich/8.1.30, netcdf/4.9.0.13"
+setenv ICE_MACHINE_MAKE gmake
+setenv ICE_MACHINE_WKDIR $WORKDIR/CICE_RUNS
+setenv ICE_MACHINE_INPUTDATA /p/work1/projects/RASM/cice_consortium
+setenv ICE_MACHINE_BASELINE $WORKDIR/CICE_BASELINE
+setenv ICE_MACHINE_SUBMIT "sbatch "
+setenv ICE_MACHINE_ACCT P00000000
+setenv ICE_MACHINE_QUEUE "debug"
+setenv ICE_MACHINE_TPNODE 192    # tasks per node
+setenv ICE_MACHINE_BLDTHRDS 12
+setenv ICE_MACHINE_QSTAT "squeue "
diff --git a/configuration/scripts/machines/env.blueback_nvhpc b/configuration/scripts/machines/env.blueback_nvhpc
new file mode 100644
index 000000000..5b1a076f8
--- /dev/null
+++ b/configuration/scripts/machines/env.blueback_nvhpc
@@ -0,0 +1,58 @@
+#!/bin/csh -f
+set inp = "undefined"
+if ($#argv == 1) then
+  set inp = $1
+endif
+
+if ("$inp" != "-nomodules") then
+
+source ${MODULESHOME}/init/csh
+
+module unload PrgEnv-cray
+module unload PrgEnv-gnu
+module unload PrgEnv-intel
+module unload PrgEnv-nvhpc
+module unload PrgEnv-aocc
+module load PrgEnv-nvhpc/8.5.0
+
+module unload nvhpc
+module load nvhpc/24.3
+
+module unload cray-mpich
+module unload mpi
+module unload openmpi
+module load cray-mpich/8.1.30
+#module load mpi/2021.11
+#module load openmpi/4.1.6
+
+module unload cray-hdf5
+module unload cray-hdf5-parallel
+module unload cray-netcdf-hdf5parallel
+module unload cray-parallel-netcdf
+module unload netcdf
+module load cray-netcdf/4.9.0.13
+module load cray-hdf5/1.14.3.1
+
+setenv NETCDF_PATH ${NETCDF_DIR}
+limit coredumpsize unlimited
+limit stacksize unlimited
+setenv OMP_STACKSIZE 128M
+setenv OMP_WAIT_POLICY PASSIVE
+setenv FI_CXI_RX_MATCH_MODE hybrid
+
+endif
+
+setenv ICE_MACHINE_MACHNAME blueback
+setenv ICE_MACHINE_MACHINFO "Cray EX4000 AMD Genoa, Slingshot-11 Interconnect"
+setenv ICE_MACHINE_ENVNAME intel
+setenv ICE_MACHINE_ENVINFO "nvfortran 24.3-0, cray-mpich/8.1.30, netcdf/4.9.0.13"
+setenv ICE_MACHINE_MAKE gmake
+setenv ICE_MACHINE_WKDIR $WORKDIR/CICE_RUNS
+setenv ICE_MACHINE_INPUTDATA /p/work1/projects/RASM/cice_consortium
+setenv ICE_MACHINE_BASELINE $WORKDIR/CICE_BASELINE
+setenv ICE_MACHINE_SUBMIT "sbatch "
+setenv ICE_MACHINE_ACCT P00000000
+setenv ICE_MACHINE_QUEUE "debug"
+setenv ICE_MACHINE_TPNODE 192    # tasks per node
+setenv ICE_MACHINE_BLDTHRDS 12
+setenv ICE_MACHINE_QSTAT "squeue "