fcoll/vulcan: cleanup write_all operations

This is a cleanup of the write_all operation, in preparation for adding read_all implementation to the vulcan component. Specifically:

- remove the multiple group option: this was envisioned for the vulcan component, but never fully implemented. Therefore, having a few stubs at some locations (and an mca parameter) doesn't make sense, and are being removed to simplify the code.

- remote the write_chunksize option: this was an artifact of the code based having evolved from dynamic_gen2 (where the option makes sense). However, in vulcan it doesn't really make sense and was actually not correctly implemented eitherway, so if somebody would have used that option, it would prbably have failed.

The changed have been validated with the ompio testsuite as well as the hdf5 testphdf5, t_shapesame, and t_filters_parallel tests.

Signed-off-by: Edgar Gabriel <edgar.gabriel@amd.com>

Author: edgargabriel

ompi/mca/fcoll/vulcan/fcoll_vulcan.h

@@ -40,8 +40,6 @@ BEGIN_C_DECLS
 /* Globally exported variables */
 
 extern int mca_fcoll_vulcan_priority;
-extern int mca_fcoll_vulcan_num_groups;
-extern int mca_fcoll_vulcan_write_chunksize;
 extern int mca_fcoll_vulcan_async_io;
 extern int mca_fcoll_vulcan_use_accelerator_buffers;
 

ompi/mca/fcoll/vulcan/fcoll_vulcan_component.c

@@ -43,8 +43,6 @@ const char *mca_fcoll_vulcan_component_version_string =
  * Global variables
  */
 int mca_fcoll_vulcan_priority = 10;
-int mca_fcoll_vulcan_num_groups = 1;
-int mca_fcoll_vulcan_write_chunksize = -1;
 int mca_fcoll_vulcan_async_io = 0;
 
 /*
@@ -91,20 +89,6 @@ vulcan_register(void)
                                            OPAL_INFO_LVL_9,
                                            MCA_BASE_VAR_SCOPE_READONLY, &mca_fcoll_vulcan_priority);
 
-    mca_fcoll_vulcan_num_groups = 1;
-    (void) mca_base_component_var_register(&mca_fcoll_vulcan_component.fcollm_version,
-                                           "num_groups", "Number of subgroups created by the vulcan component",
-                                           MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
-                                           OPAL_INFO_LVL_9,
-                                           MCA_BASE_VAR_SCOPE_READONLY, &mca_fcoll_vulcan_num_groups);
-
-    mca_fcoll_vulcan_write_chunksize = -1;
-    (void) mca_base_component_var_register(&mca_fcoll_vulcan_component.fcollm_version,
-                                           "write_chunksize", "Chunk size written at once. Default: stripe_size of the file system",
-                                           MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
-                                           OPAL_INFO_LVL_9,
-                                           MCA_BASE_VAR_SCOPE_READONLY, &mca_fcoll_vulcan_write_chunksize);
-
     mca_fcoll_vulcan_async_io = 0;
     (void) mca_base_component_var_register(&mca_fcoll_vulcan_component.fcollm_version,
                                            "async_io", "Asynchronous I/O support options. 0: Automatic choice (default) "