fcoll/vulcan: Support of larger offsets

For very large offsets, the data chunk size to be written by each aggregator
exceeds the capacity of an integer variable. Besides, some variables were
not large enough to hold intermediate values.

Signed-off-by: raafatfeki <fekiraafat@gmail.com>

ompi/mca/fcoll/vulcan/fcoll_vulcan_file_write_all.c

@@ -98,7 +98,7 @@ int mca_fcoll_vulcan_break_file_view ( struct iovec *decoded_iov, int iov_count,
                                         struct iovec ***broken_decoded_iovs, int **broken_iov_counts,
                                         struct iovec ***broken_iov_arrays, int **broken_counts, 
                                         MPI_Aint **broken_total_lengths,
-                                        int stripe_count, int stripe_size); 
+                                        int stripe_count, size_t stripe_size); 
 
 
 int mca_fcoll_vulcan_get_configuration (mca_io_ompio_file_t *fh, int *vulcan_num_io_procs, 
@@ -1353,7 +1353,7 @@ int mca_fcoll_vulcan_break_file_view ( struct iovec *mem_iov, int mem_count,
                                         struct iovec ***ret_broken_mem_iovs, int **ret_broken_mem_counts,
                                         struct iovec ***ret_broken_file_iovs, int **ret_broken_file_counts, 
                                         MPI_Aint **ret_broken_total_lengths,
-                                        int stripe_count, int stripe_size)
+                                        int stripe_count, size_t stripe_size)
 {
     int i, j, ret=OMPI_SUCCESS;
     struct iovec **broken_mem_iovs=NULL; 
@@ -1406,7 +1406,8 @@ int mca_fcoll_vulcan_break_file_view ( struct iovec *mem_iov, int mem_count,
     }
     
     /* Step 1: separate the local_iov_array per aggregator */
-    int owner, rest, len, temp_len, blocklen, memlen=0;
+    int owner;
+    size_t rest, len, temp_len, blocklen, memlen=0;
     off_t offset, temp_offset, start_offset, memoffset=0;
 
     i=j=0;