diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5ea075d194a9da75a1c18d180c65239be83eb85e..2ea56e3645e2c4cb85fc8d7d8a75508e58ccd63b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -85,18 +85,18 @@ Python 3.6 POCL:
   except:
   - tags
 
-# PyPy AMD CPU:
-#   script:
-#   - export PY_EXE=pypy
-#   - export PYOPENCL_TEST="amd:pu"
-#   - export EXTRA_INSTALL="numpy mako"
-#   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
-#   - ". ./build-and-test-py-project.sh"
-#   tags:
-#   - pypy
-#   - amd-cl-cpu
-#   except:
-#   - tags
+PyPy POCL:
+  script:
+  - export PY_EXE=pypy
+  - export PYOPENCL_TEST="portable"
+  - export EXTRA_INSTALL="numpy mako"
+  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
+  - ". ./build-and-test-py-project.sh"
+  tags:
+  - pypy
+  - amd-cl-cpu
+  except:
+  - tags
 
 CentOS binary:
   script:
diff --git a/loopy/target/cuda.py b/loopy/target/cuda.py
index 2bdffb5aa69bdc0f72fe12a58faa6d0e78920e0f..38abc972906ae54d58ebc285069b98267a064946 100644
--- a/loopy/target/cuda.py
+++ b/loopy/target/cuda.py
@@ -24,6 +24,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 """
 
+import sys
 import numpy as np
 
 from pytools import memoize_method
@@ -45,7 +46,7 @@ class vec:  # noqa
 def _create_vector_types():
     field_names = ["x", "y", "z", "w"]
 
-    if tuple.__itemsize__ * 8 == 32:
+    if sys.maxsize == 2**32-1:
         long_dtype = np.int32
         ulong_dtype = np.uint32
     else: