Merge branch 'patch-1' of https://github.com/sublee/Megatron-LM into community-fixes

    group.add_argument('--split', type=str, default='969, 30, 1',

                       help='Comma-separated list of proportions for training,'

                       ' validation, and test split. For example the split '

                       '`90,5,5` will use 90% of data for training, 5% for '

                       'validation and 5% for test.')

                       '`90,5,5` will use 90%% of data for training, 5%% for '

                       'validation and 5%% for test.')

    group.add_argument('--vocab-file', type=str, default=None,

                       help='Path to the vocab file.')

    group.add_argument('--merge-file', type=str, default=None,