Fix region transfer with object static partitioning (#214)

* Update pdc_region_transfer.c

* Committing clang-format changes

* Update .gitlab-ci.yml

Fix issue with Perlmutter CI libfabric module

---------

Co-authored-by: github-actions <github-actions[bot]@users.noreply.github.com>

.gitlab-ci.yml

@@ -23,7 +23,7 @@ perlmutter-no-cache-build:
         SUPERCOMPUTER: "perlmutter"
         MERCURY_DIR: "/global/cfs/cdirs/${PDC_PROJECT}/pdc-perlmutter/mercury/install"
     script:
-        - module load libfabric/1.15.2.0
+        - module load libfabric
         - module list
         - mkdir -p ${PDC_BUILD_PATH}/perlmutter/no-cache
         - cd ${PDC_BUILD_PATH}/perlmutter/no-cache
@@ -51,7 +51,7 @@ perlmutter-cache-build:
         SUPERCOMPUTER: "perlmutter"
         MERCURY_DIR: "/global/cfs/cdirs/${PDC_PROJECT}/pdc-perlmutter/mercury/install"
     script:
-        - module load libfabric/1.15.2.0
+        - module load libfabric
         - module list
         - mkdir -p ${PDC_BUILD_PATH}/perlmutter/cache
         - cd ${PDC_BUILD_PATH}/perlmutter/cache
@@ -374,7 +374,7 @@ perlmutter-metrics-build:
         SUPERCOMPUTER: "perlmutter"
         MERCURY_DIR: "/global/cfs/cdirs/${PDC_PROJECT}/pdc-perlmutter/mercury/install"
     script:
-        - module load libfabric/1.15.2.0
+        - module load libfabric
         - module list
         - mkdir -p ${PDC_BUILD_PATH}/perlmutter/metrics
         - cd ${PDC_BUILD_PATH}/perlmutter/metrics

src/api/pdc_region/pdc_region_transfer.c

@@ -433,6 +433,8 @@ static_region_partition(char *buf, int ndim, uint64_t unit, pdc_access_t access_
     }
     // Use the remainder theorem to split along one dimension of regions.
     s = obj_dims[split_dim] / pdc_server_num_g;
+    if (s == 0)
+        s = 1;
     x = pdc_server_num_g - obj_dims[split_dim] % pdc_server_num_g;
 
     *data_server_ids = (uint32_t *)malloc(sizeof(uint32_t) * pdc_server_num_g);