Just to follow up my earlier post, checking out master and building that gives me the same lock up in ompi_info

>      ompi_info.exe!opal_atomic_lifo_push(opal_atomic_lifo_t * lifo, opal_list_item_t * item) Line 73 C

      ompi_info.exe!ompi_free_list_grow(ompi_free_list_t * flist, unsigned __int64 num_elements) Line 257       C

      ompi_info.exe!ompi_rb_tree_init(ompi_rb_tree_t * tree, int (void *, void *) * comp) Line 77     C

      ompi_info.exe!mca_mpool_base_tree_init() Line 88       C

      ompi_info.exe!mca_mpool_base_open() Line 86     C

      ompi_info.exe!ompi_info_register_components(opal_pointer_array_t * mca_types, opal_pointer_array_t * component_map) Line 264    C

      ompi_info.exe!main(int argc, char * * argv) Line 158   C

      ompi_info.exe!__tmainCRTStartup() Line 536      C

      ompi_info.exe!mainCRTStartup() Line 377  C

      kernel32.dll!000007feac87167e()   Unknown

      ntdll.dll!000007feae4cc3f1()      Unknown

at the line below with the * at the start. Well actually I guess it’s sitting in a spin lock. Should I continue playing or is master unstable?

Thanks

JB

/* Add one element to the LIFO. We will return the last head of the list

* to allow the upper level to detect if this element is the first one in the

* list (if the list was empty before this operation).

*/

static inline opal_list_item_t* opal_atomic_lifo_push( opal_atomic_lifo_t* lifo,

opal_list_item_t* item )

{

#if OPAL_ENABLE_MULTI_THREADS

do {

*       item->opal_list_next = lifo->opal_lifo_head;

        opal_atomic_wmb();

if( opal_atomic_cmpset_ptr( &(lifo->opal_lifo_head),

                                    (void*)item->opal_list_next,

item ) ) {

            opal_atomic_cmpset_32((volatile int32_t*)&item->item_free, 1, 0);

return (opal_list_item_t*)item->opal_list_next;

        }

/* DO some kind of pause to release the bus */

    } while( 1 );

#else

    item->opal_list_next = lifo->opal_lifo_head;

    lifo->opal_lifo_head = item;

return (opal_list_item_t*)item->opal_list_next;

#endif /* OPAL_ENABLE_MULTI_THREADS */

}