diff --git a/ci/test_python_other.sh b/ci/test_python_other.sh
index b0a03ba69cc..8994e0172f1 100755
--- a/ci/test_python_other.sh
+++ b/ci/test_python_other.sh
@@ -2,7 +2,7 @@
 # Copyright (c) 2022-2025, NVIDIA CORPORATION.
 
 # Support invoking test_python_cudf.sh outside the script directory
-cd "$(dirname "$(realpath "${BASH_SOURCE[0]}")")"/../
+cd "$(dirname "$(realpath "${BASH_SOURCE[0]}")")"/../ || exit;
 
 # Common setup steps shared by Python test jobs
 source ./ci/test_python_common.sh test_python_other
@@ -14,10 +14,22 @@ EXITCODE=0
 trap "EXITCODE=1" ERR
 set +e
 
+# Get the total GPU memory in MiB
+GPU_MEMORY=$(nvidia-smi --query-gpu=memory.total --format=csv,noheader,nounits | awk '{print $1}')
+GPU_MEMORY_GB=$((GPU_MEMORY / 1024))
+
+# Set the NUM_PROCESSES based on GPU memory
+if [ "$GPU_MEMORY_GB" -lt 24 ]; then
+  NUM_PROCESSES=10
+else
+  NUM_PROCESSES=20
+fi
+
+
 rapids-logger "pytest dask_cudf"
 ./ci/run_dask_cudf_pytests.sh \
   --junitxml="${RAPIDS_TESTS_DIR}/junit-dask-cudf.xml" \
-  --numprocesses=8 \
+  --numprocesses=${NUM_PROCESSES} \
   --dist=worksteal \
   --cov-config=../.coveragerc \
   --cov=dask_cudf \
@@ -31,7 +43,7 @@ rapids-logger "pytest cudf_kafka"
 rapids-logger "pytest custreamz"
 ./ci/run_custreamz_pytests.sh \
   --junitxml="${RAPIDS_TESTS_DIR}/junit-custreamz.xml" \
-  --numprocesses=8 \
+  --numprocesses=${NUM_PROCESSES} \
   --dist=worksteal \
   --cov-config=../.coveragerc \
   --cov=custreamz \
diff --git a/ci/test_wheel_cudf.sh b/ci/test_wheel_cudf.sh
index 606d157be05..98ba3245b23 100755
--- a/ci/test_wheel_cudf.sh
+++ b/ci/test_wheel_cudf.sh
@@ -27,12 +27,22 @@ RESULTS_DIR=${RAPIDS_TESTS_DIR:-"$(mktemp -d)"}
 RAPIDS_TESTS_DIR=${RAPIDS_TESTS_DIR:-"${RESULTS_DIR}/test-results"}/
 mkdir -p "${RAPIDS_TESTS_DIR}"
 
+# Get the total GPU memory in MiB
+GPU_MEMORY=$(nvidia-smi --query-gpu=memory.total --format=csv,noheader,nounits | awk '{print $1}')
+GPU_MEMORY_GB=$((GPU_MEMORY / 1024))
+
+# Set the NUM_PROCESSES based on GPU memory
+if [ "$GPU_MEMORY_GB" -lt 24 ]; then
+  NUM_PROCESSES=10
+else
+  NUM_PROCESSES=20
+fi
 
 rapids-logger "pytest pylibcudf"
 pushd python/pylibcudf/pylibcudf/tests
 python -m pytest \
   --cache-clear \
-  --numprocesses=8 \
+  --numprocesses=${NUM_PROCESSES} \
   --dist=worksteal \
   .
 popd
@@ -42,7 +52,7 @@ pushd python/cudf/cudf/tests
 python -m pytest \
   --cache-clear \
   --junitxml="${RAPIDS_TESTS_DIR}/junit-cudf.xml" \
-  --numprocesses=8 \
+  --numprocesses=${NUM_PROCESSES} \
   --dist=worksteal \
   .
 popd
diff --git a/ci/test_wheel_dask_cudf.sh b/ci/test_wheel_dask_cudf.sh
index 5e55fff78cd..f184cf22029 100755
--- a/ci/test_wheel_dask_cudf.sh
+++ b/ci/test_wheel_dask_cudf.sh
@@ -29,12 +29,24 @@ RESULTS_DIR=${RAPIDS_TESTS_DIR:-"$(mktemp -d)"}
 RAPIDS_TESTS_DIR=${RAPIDS_TESTS_DIR:-"${RESULTS_DIR}/test-results"}/
 mkdir -p "${RAPIDS_TESTS_DIR}"
 
+# Get the total GPU memory in MiB
+GPU_MEMORY=$(nvidia-smi --query-gpu=memory.total --format=csv,noheader,nounits | awk '{print $1}')
+GPU_MEMORY_GB=$((GPU_MEMORY / 1024))
+
+# Set the NUM_PROCESSES based on GPU memory
+if [ "$GPU_MEMORY_GB" -lt 24 ]; then
+  NUM_PROCESSES=10
+else
+  NUM_PROCESSES=20
+fi
+
+
 # Run tests in dask_cudf/tests and dask_cudf/io/tests
 rapids-logger "pytest dask_cudf"
 pushd python/dask_cudf/dask_cudf
 python -m pytest \
   --junitxml="${RAPIDS_TESTS_DIR}/junit-dask-cudf.xml" \
-  --numprocesses=8 \
+  --numprocesses=${NUM_PROCESSES} \
   --dist=worksteal \
   .
 popd