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* Refactor `Barrier_all` and `Sync_all` to use default context - Removed context-specific implementations of barrier_all and sync_all - Added barrier_all and sync_all to the default context implementation - Updated functional tests to use the default context for barrier_all and sync_all * Update `Barrier_all` and `Sync_all` API usage in documentation * Update `CHANGELOG` --------- Co-authored-by: Yiltan <ytemucin@amd.com>