Improve error message for missing partition.nc file (#1006)

TomMelt · web-flow · commit 7495b88e75a5 · 2026-03-23T08:46:32.000Z
## Improve error message for missing `partition.nc` file Fixes #914 Previously, when the `partition.nc` file is missing (for MPI runs) you would get a generic netcdf error message which was not clear at all e.g., <details><summary>Previous Error Message</summary> <p> ``` $ mpirun -n 4 ../build-mpi/nextsim --config-file config_june23.cfg terminate called after throwing an instance of 'netCDF::exceptions::NcException' terminate called after throwing an instance of 'netCDF::exceptions::NcException' what(): No such file or directory file: /tmp/melt/spack-stage/spack-stage-netcdf-cxx4-4.3.1-k66y7sxdla7qjovzkm5lmbcn6io7tugb/spack-src/cxx4/ncFile.cpp line:88 [lenny:23322] *** Process received signal *** [lenny:23322] Signal: Aborted (6) [lenny:23322] Signal code: (-6) what(): No such file or directory file: /tmp/melt/spack-stage/spack-stage-netcdf-cxx4-4.3.1-k66y7sxdla7qjovzkm5lmbcn6io7tugb/spack-src/cxx4/ncFile.cpp line:88 [lenny:23321] *** Process received signal *** [lenny:23321] Signal: Aborted (6) [lenny:23321] Signal code: (-6) terminate called after throwing an instance of 'netCDF::exceptions::NcException' what(): No such file or directory file: /tmp/melt/spack-stage/spack-stage-netcdf-cxx4-4.3.1-k66y7sxdla7qjovzkm5lmbcn6io7tugb/spack-src/cxx4/ncFile.cpp line:88 [lenny:23324] *** Process received signal *** [lenny:23324] Signal: Aborted (6) [lenny:23324] Signal code: (-6) terminate called after throwing an instance of 'netCDF::exceptions::NcException' what(): No such file or directory file: /tmp/melt/spack-stage/spack-stage-netcdf-cxx4-4.3.1-k66y7sxdla7qjovzkm5lmbcn6io7tugb/spack-src/cxx4/ncFile.cpp line:88 [lenny:23323] *** Process received signal *** [lenny:23323] Signal: Aborted (6) [lenny:23323] Signal code: (-6) [lenny:23321] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x45330)[0x797f636c4330] [lenny:23321] [ 1] [lenny:23323] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x45330)[0x750e62b0c330] [lenny:23323] [ 1] /lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c)[0x750e62b65b2c] [lenny:23323] [ 2] [lenny:23324] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x45330)[0x77f9b703a330] [lenny:23324] [ 1] /lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c)[0x77f9b7093b2c] [lenny:23324] [ 2] [lenny:23322] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x45330)[0x7f4fde766330] [lenny:23322] [ 1] /lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c)[0x797f6371db2c] [lenny:23321] [ 2] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e)[0x77f9b703a27e] [lenny:23324] [ 3] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e)[0x750e62b0c27e] [lenny:23323] [ 3] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e)[0x797f636c427e] [lenny:23321] [ 3] /lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c)[0x7f4fde7bfb2c] [lenny:23322] [ 2] /lib/x86_64-linux-gnu/libc.so.6(abort+0xdf)[0x750e62aef8ff] [lenny:23323] [ 4] /lib/x86_64-linux-gnu/libc.so.6(abort+0xdf)[0x77f9b701d8ff] [lenny:23324] [ 4] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e)[0x7f4fde76627e] [lenny:23322] [ 3] /lib/x86_64-linux-gnu/libc.so.6(abort+0xdf)[0x797f636a78ff] [lenny:23321] [ 4] /lib/x86_64-linux-gnu/libc.so.6(abort+0xdf)[0x7f4fde7498ff] [lenny:23322] [ 4] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(+0xa5ff5)[0x77f9b72f6ff5] [lenny:23324] [ 5] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(+0xa5ff5)[0x750e62dc8ff5] [lenny:23323] [ 5] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(+0xa5ff5)[0x797f63980ff5] [lenny:23321] [ 5] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(+0xa5ff5)[0x7f4fdea22ff5] [lenny:23322] [ 5] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(+0xbb0da)[0x77f9b730c0da] [lenny:23324] [ 6] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(+0xbb0da)[0x750e62dde0da] [lenny:23323] [ 6] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(+0xbb0da)[0x7f4fdea380da] [lenny:23322] [ 6] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(+0xbb0da)[0x797f639960da] [lenny:23321] [ 6] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(_ZSt10unexpectedv+0x0)[0x7f4fdea22a55] [lenny:23322] [ 7] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(_ZSt10unexpectedv+0x0)[0x750e62dc8a55] [lenny:23323] [ 7] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(_ZSt10unexpectedv+0x0)[0x77f9b72f6a55] [lenny:23324] [ 7] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(_ZSt10unexpectedv+0x0)[0x797f63980a55] [lenny:23321] [ 7] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(+0xbb391)[0x7f4fdea38391] [lenny:23322] [ 8] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libnetcdf-cxx4.so.1(+0x24d1f)[0x7f4fde4fad1f] [lenny:23322] [ 9] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libnetcdf-cxx4.so.1(_ZN6netCDF6NcFile4openERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEENS0_8FileModeE+0xea)[0x7f4fde5040fa] [lenny:23322] [10] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(+0xbb391)[0x77f9b730c391] [lenny:23324] [ 8] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(+0xbb391)[0x797f63996391] [lenny:23321] [ 8] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libstdc++.so.6(+0xbb391)[0x750e62dde391] [lenny:23323] [ 8] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libnetcdf-cxx4.so.1(+0x24d1f)[0x797f63458d1f] [lenny:23321] [ 9] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libnetcdf-cxx4.so.1(+0x24d1f)[0x750e628a0d1f] [lenny:23323] [ 9] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libnetcdf-cxx4.so.1(_ZN6netCDF6NcFileC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEENS0_8FileModeE+0x32)[0x7f4fde504132] [lenny:23322] [11] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libnetcdf-cxx4.so.1(+0x24d1f)[0x77f9b6dced1f] [lenny:23324] [ 9] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libnetcdf-cxx4.so.1(_ZN6netCDF6NcFile4openERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEENS0_8FileModeE+0xea)[0x750e628aa0fa] [lenny:23323] [10] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim13ModelMetadata20getPartitionMetadataENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x4a)[0x7f4fdef3537a] [lenny:23322] [12] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libnetcdf-cxx4.so.1(_ZN6netCDF6NcFile4openERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEENS0_8FileModeE+0xea)[0x797f634620fa] [lenny:23321] [10] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libnetcdf-cxx4.so.1(_ZN6netCDF6NcFile4openERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEENS0_8FileModeE+0xea)[0x77f9b6dd80fa] [lenny:23324] [10] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libnetcdf-cxx4.so.1(_ZN6netCDF6NcFileC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEENS0_8FileModeE+0x32)[0x77f9b6dd8132] [lenny:23324] [11] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libnetcdf-cxx4.so.1(_ZN6netCDF6NcFileC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEENS0_8FileModeE+0x32)[0x797f63462132] [lenny:23321] [11] /software/spack/var/spack/environments/nextsim/.spack-env/view/lib/libnetcdf-cxx4.so.1(_ZN6netCDF6NcFileC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEENS0_8FileModeE+0x32)[0x750e628aa132] [lenny:23323] [11] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim13ModelMetadataC1ENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x505)[0x7f4fdef36225] [lenny:23322] [13] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim13ModelMetadata20getPartitionMetadataENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x4a)[0x77f9b780937a] [lenny:23324] [12] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim13ModelMetadata20getPartitionMetadataENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x4a)[0x797f63e9337a] [lenny:23321] [12] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim13ModelMetadata20getPartitionMetadataENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x4a)[0x750e632db37a] [lenny:23323] [12] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim13ModelMetadata11getInstanceENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x9f)[0x7f4fdeef7dcf] [lenny:23322] [14] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim5Model9configureEv+0x322)[0x7f4fdeef3392] [lenny:23322] [15] ../build-mpi/nextsim(+0x4048)[0x5e232ffaa048] [lenny:23322] [16] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim13ModelMetadataC1ENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x505)[0x750e632dc225] [lenny:23323] [13] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim13ModelMetadataC1ENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x505)[0x77f9b780a225] [lenny:23324] [13] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim13ModelMetadataC1ENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x505)[0x797f63e94225] [lenny:23321] [13] /lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca)[0x7f4fde74b1ca] [lenny:23322] [17] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b)[0x7f4fde74b28b] [lenny:23322] [18] ../build-mpi/nextsim(+0x4165)[0x5e232ffaa165] [lenny:23322] *** End of error message *** /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim13ModelMetadata11getInstanceENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x9f)[0x797f63e55dcf] [lenny:23321] [14] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim13ModelMetadata11getInstanceENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x9f)[0x750e6329ddcf] [lenny:23323] [14] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim13ModelMetadata11getInstanceENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x9f)[0x77f9b77cbdcf] [lenny:23324] [14] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim5Model9configureEv+0x322)[0x797f63e51392] [lenny:23321] [15] ../build-mpi/nextsim(+0x4048)[0x631532bec048] [lenny:23321] [16] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim5Model9configureEv+0x322)[0x750e63299392] [lenny:23323] [15] ../build-mpi/nextsim(+0x4048)[0x627a057a6048] [lenny:23323] [16] /home/melt/sync/cambridge/projects/current/sasip/nextsimdg/build-mpi/libnextsimlib.so(_ZN7Nextsim5Model9configureEv+0x322)[0x77f9b77c7392] [lenny:23324] [15] ../build-mpi/nextsim(+0x4048)[0x5e0c045f9048] [lenny:23324] [16] /lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca)[0x750e62af11ca] [lenny:23323] [17] /lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca)[0x797f636a91ca] [lenny:23321] [17] /lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca)[0x77f9b701f1ca] [lenny:23324] [17] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b)[0x797f636a928b] [lenny:23321] [18] ../build-mpi/nextsim(+0x4165)[0x631532bec165] [lenny:23321] *** End of error message *** /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b)[0x750e62af128b] [lenny:23323] [18] ../build-mpi/nextsim(+0x4165)[0x627a057a6165] [lenny:23323] *** End of error message *** /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b)[0x77f9b701f28b] [lenny:23324] [18] ../build-mpi/nextsim(+0x4165)[0x5e0c045f9165] [lenny:23324] *** End of error message *** -------------------------------------------------------------------------- Primary job terminated normally, but 1 process returned a non-zero exit code. Per user-direction, the job has been aborted. -------------------------------------------------------------------------- -------------------------------------------------------------------------- mpirun noticed that process rank 2 with PID 0 on node lenny exited on signal 6 (Aborted). -------------------------------------------------------------------------- ``` </p> </details> With this PR, the new error message will look something like this: <details><summary>New Error Message</summary> <p> ``` $ mpirun -n 4 ../build-mpi/nextsim --config-file config_june23.cfg Failed to open partition file [partition.nc] :: No such file or directory file: /tmp/melt/spack-stage/spack-stage-netcdf-cxx4-4.3.1-k66y7sxdla7qjovzkm5lmbcn6io7tugb/spack-src/cxx4/ncFile.cpp line:88 Failed to open partition file [partition.nc] :: No such file or directory file: /tmp/melt/spack-stage/spack-stage-netcdf-cxx4-4.3.1-k66y7sxdla7qjovzkm5lmbcn6io7tugb/spack-src/cxx4/ncFile.cpp line:88 Failed to open partition file [partition.nc] :: No such file or directory file: /tmp/melt/spack-stage/spack-stage-netcdf-cxx4-4.3.1-k66y7sxdla7qjovzkm5lmbcn6io7tugb/spack-src/cxx4/ncFile.cpp line:88 -------------------------------------------------------------------------- MPI_ABORT was invoked on rank 0 in communicator MPI_COMM_WORLD with errorcode 1. NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes. You may or may not see output from other processes, depending on exactly when Open MPI kills them. -------------------------------------------------------------------------- [lenny:36722] 2 more processes have sent help message help-mpi-api.txt / mpi-abort [lenny:36722] Set MCA parameter "orte_base_help_aggregate" to 0 to see all help / error messages ``` </p> </details>
diff --git a/core/src/ModelMetadata.cpp b/core/src/ModelMetadata.cpp
@@ -163,57 +163,66 @@ void ModelMetadata::readNeighbourData(netCDF::NcFile& ncFile)
 
 void ModelMetadata::getPartitionMetadata(std::string partitionFile)
 {
-    netCDF::NcFile ncFile(partitionFile, netCDF::NcFile::read);
-    int sizes = ncFile.getDim("L").getSize();
-    int nBoxes = ncFile.getDim("P").getSize();
-    auto& modelMPI = ModelMPI::getInstance();
-    auto mpiSize = modelMPI.getSize();
-    if (nBoxes != mpiSize) {
-        std::string errorMsg = "Number of MPI ranks " + std::to_string(mpiSize) + " <> "
-            + std::to_string(nBoxes) + "\n";
-        throw std::runtime_error(errorMsg);
-    }
-    if (!globalExtentX) {
-        globalExtentX = ncFile.getDim("NX").getSize();
-    } else if (globalExtentX != ncFile.getDim("NX").getSize()) {
-        throw std::runtime_error("ModelMetadata: Inconsistent global x-extent between "
-                                 "partition and input files.");
-    }
-    if (!globalExtentY) {
-        globalExtentY = ncFile.getDim("NY").getSize();
-    } else if (globalExtentX != ncFile.getDim("NY").getSize()) {
-        throw std::runtime_error("ModelMetadata: Inconsistent global y-extent between "
-                                 "partition and input files.");
-    }
-    netCDF::NcGroup bboxGroup(ncFile.getGroup(bboxName));
+    try {
+        netCDF::NcFile ncFile(partitionFile, netCDF::NcFile::read);
+        int sizes = ncFile.getDim("L").getSize();
+        int nBoxes = ncFile.getDim("P").getSize();
+        auto& modelMPI = ModelMPI::getInstance();
+        auto mpiSize = modelMPI.getSize();
+        if (nBoxes != mpiSize) {
+            std::string errorMsg = "Number of MPI ranks " + std::to_string(mpiSize) + " <> "
+                + std::to_string(nBoxes) + "\n";
+            throw std::runtime_error(errorMsg);
+        }
+        if (!globalExtentX) {
+            globalExtentX = ncFile.getDim("NX").getSize();
+        } else if (globalExtentX != ncFile.getDim("NX").getSize()) {
+            throw std::runtime_error("ModelMetadata: Inconsistent global x-extent between "
+                                     "partition and input files.");
+        }
+        if (!globalExtentY) {
+            globalExtentY = ncFile.getDim("NY").getSize();
+        } else if (globalExtentX != ncFile.getDim("NY").getSize()) {
+            throw std::runtime_error("ModelMetadata: Inconsistent global y-extent between "
+                                     "partition and input files.");
+        }
+        netCDF::NcGroup bboxGroup(ncFile.getGroup(bboxName));
 
-    std::vector<size_t> rank(1, modelMPI.getRank());
-    bboxGroup.getVar("domain_x").getVar(rank, &localCornerX);
-    bboxGroup.getVar("domain_y").getVar(rank, &localCornerY);
-    bboxGroup.getVar("domain_extent_x").getVar(rank, &localExtentX);
-    bboxGroup.getVar("domain_extent_y").getVar(rank, &localExtentY);
+        std::vector<size_t> rank(1, modelMPI.getRank());
+        bboxGroup.getVar("domain_x").getVar(rank, &localCornerX);
+        bboxGroup.getVar("domain_y").getVar(rank, &localCornerY);
+        bboxGroup.getVar("domain_extent_x").getVar(rank, &localExtentX);
+        bboxGroup.getVar("domain_extent_y").getVar(rank, &localExtentY);
 
-    readNeighbourData(ncFile);
+        readNeighbourData(ncFile);
 
-    // cornerHaloRecv doesn't need to be read because it can be easily calculated.
-    for (auto corner : corners) {
-        if (cornerRanks[corner].size()) {
-            cornerHaloRecv[corner].resize(1);
-            cornerHaloRecv[corner][0] = 2 * (localExtentX + localExtentY) + corner;
-        }
-        if (cornerRanksPeriodic[corner].size()) {
-            cornerHaloRecvPeriodic[corner].resize(1);
-            cornerHaloRecvPeriodic[corner][0] = 2 * (localExtentX + localExtentY) + corner;
+        // cornerHaloRecv doesn't need to be read because it can be easily calculated.
+        for (auto corner : corners) {
+            if (cornerRanks[corner].size()) {
+                cornerHaloRecv[corner].resize(1);
+                cornerHaloRecv[corner][0] = 2 * (localExtentX + localExtentY) + corner;
+            }
+            if (cornerRanksPeriodic[corner].size()) {
+                cornerHaloRecvPeriodic[corner].resize(1);
+                cornerHaloRecvPeriodic[corner][0] = 2 * (localExtentX + localExtentY) + corner;
+            }
         }
-    }
-
-    // gather rank extents in X & Y direction for all processes
-    rankExtentsX.resize(modelMPI.getSize(), 0);
-    rankExtentsY.resize(modelMPI.getSize(), 0);
-    MPI_Allgather(&localExtentX, 1, MPI_INT, rankExtentsX.data(), 1, MPI_INT, modelMPI.getComm());
-    MPI_Allgather(&localExtentY, 1, MPI_INT, rankExtentsY.data(), 1, MPI_INT, modelMPI.getComm());
 
-    ncFile.close();
+        // gather rank extents in X & Y direction for all processes
+        rankExtentsX.resize(modelMPI.getSize(), 0);
+        rankExtentsY.resize(modelMPI.getSize(), 0);
+        MPI_Allgather(
+            &localExtentX, 1, MPI_INT, rankExtentsX.data(), 1, MPI_INT, modelMPI.getComm());
+        MPI_Allgather(
+            &localExtentY, 1, MPI_INT, rankExtentsY.data(), 1, MPI_INT, modelMPI.getComm());
+
+        ncFile.close();
+    } catch (netCDF::exceptions::NcException& e) {
+        std::cerr << "Failed to open partition file [" << partitionFile << "] :: " << e.what()
+                  << std::endl;
+        auto& modelMPI = ModelMPI::getInstance();
+        MPI_Abort(modelMPI.getComm(), 1);
+    }
 }
 
 int ModelMetadata::getLocalCornerX() const { return localCornerX; }
