minimal bert pipeline parallel test (#1216)

* minimal bert pipeline parallel test

* fix global and cleanup

* use get_forward_backward_func

* cleanup and fix some tests

apex/transformer/testing/standalone_bert.py

+import torch
+
+from apex.normalization import FusedLayerNorm as LayerNorm
+from apex.transformer import tensor_parallel
+from apex.transformer.enums import AttnMaskType
+from apex.transformer.testing.global_vars import get_args
+from .standalone_gpt import get_language_model, get_linear_layer, init_method_normal, parallel_lm_logits, scaled_init_method_normal
+from .standalone_gpt import MegatronModule
+
+def bert_extended_attention_mask(attention_mask):
+    # We create a 3D attention mask from a 2D tensor mask.
+    # [b, 1, s]
+    attention_mask_b1s = attention_mask.unsqueeze(1)
+    # [b, s, 1]
+    attention_mask_bs1 = attention_mask.unsqueeze(2)
+    # [b, s, s]
+    attention_mask_bss = attention_mask_b1s * attention_mask_bs1
+    # [b, 1, s, s]
+    extended_attention_mask = attention_mask_bss.unsqueeze(1)
+
+    # Convert attention mask to binary:
+    extended_attention_mask = (extended_attention_mask < 0.5)
+
+    return extended_attention_mask
+
+def bert_position_ids(token_ids):
+    # Create position ids
+    seq_length = token_ids.size(1)
+    position_ids = torch.arange(seq_length, dtype=torch.long,
+                                device=token_ids.device)
+    position_ids = position_ids.unsqueeze(0).expand_as(token_ids)
+
+    return position_ids
+
+class BertLMHead(MegatronModule):
+    """Masked LM head for Bert
+
+    Arguments:
+        mpu_vocab_size: model parallel size of vocabulary.
+        hidden_size: hidden size
+        init_method: init method for weight initialization
+        layernorm_epsilon: tolerance for layer norm divisions
+        parallel_output: whether output logits being distributed or not.
+    """
+
+    def __init__(self, mpu_vocab_size, hidden_size, init_method,
+                 layernorm_epsilon, parallel_output):
+
+        super(BertLMHead, self).__init__()
+
+        args = get_args()
+
+        self.bias = torch.nn.Parameter(torch.zeros(mpu_vocab_size))
+        # TODO: do we need this?
+        # mpu.set_tensor_model_parallel_attributes(self.bias, True, 0, 1)
+        self.parallel_output = parallel_output
+
+        self.dense = get_linear_layer(hidden_size, hidden_size, init_method)
+        self.layernorm = LayerNorm(hidden_size, eps=layernorm_epsilon)
+        self.gelu = torch.nn.functional.gelu
+        if args.openai_gelu:
+            self.gelu = openai_gelu
+        elif args.onnx_safe:
+            self.gelu = erf_gelu
+
+    def forward(self, hidden_states, word_embeddings_weight):
+        hidden_states = self.dense(hidden_states)
+        hidden_states = self.gelu(hidden_states)
+        hidden_states = self.layernorm(hidden_states)
+        output = parallel_lm_logits(hidden_states,
+                                    word_embeddings_weight,
+                                    self.parallel_output,
+                                    bias=self.bias)
+        return output
+
+def post_language_model_processing(lm_output, pooled_output,
+                                   lm_head, binary_head,
+                                   lm_labels,
+                                   logit_weights,
+                                   fp16_lm_cross_entropy):
+    # Output.
+    lm_logits = lm_head(
+        lm_output, logit_weights)
+
+    binary_logits = None
+    if binary_head is not None:
+        binary_logits = binary_head(pooled_output)
+
+    if lm_labels is None:
+        return lm_logits, binary_logits
+    else:
+        if fp16_lm_cross_entropy:
+            assert lm_logits.dtype == torch.half
+            lm_loss = tensor_parallel.vocab_parallel_cross_entropy(lm_logits, lm_labels)
+        else:
+            lm_loss = tensor_parallel.vocab_parallel_cross_entropy(lm_logits.float(),
+                                                       lm_labels)
+        return lm_loss, binary_logits
+
+
+class BertModel(MegatronModule):
+    """Bert Language model."""
+
+    def __init__(self,
+                 num_tokentypes=2,
+                 add_binary_head=True,
+                 parallel_output=True,
+                 pre_process=True,
+                 post_process=True):
+        super(BertModel, self).__init__()
+        args = get_args()
+
+        self.fp16_lm_cross_entropy = args.fp16_lm_cross_entropy
+        self.add_binary_head = add_binary_head
+        self.parallel_output = parallel_output
+        self.pre_process = pre_process
+        self.post_process = post_process
+
+        init_method = init_method_normal(args.init_method_std)
+        scaled_init_method = scaled_init_method_normal(args.init_method_std,
+                                                       args.num_layers)
+
+        self.language_model, self._language_model_key = get_language_model(
+            num_tokentypes=num_tokentypes,
+            add_pooler=self.add_binary_head,
+            encoder_attn_mask_type=AttnMaskType.padding,
+            init_method=init_method,
+            scaled_init_method=scaled_init_method,
+            pre_process=self.pre_process,
+            post_process=self.post_process)
+
+        self.initialize_word_embeddings(init_method_normal)
+        if self.post_process:
+            self.lm_head = BertLMHead(
+                self.word_embeddings_weight().size(0),
+                args.hidden_size, init_method, args.layernorm_epsilon, parallel_output)
+            self._lm_head_key = 'lm_head'
+            self.binary_head = None
+            if self.add_binary_head:
+                self.binary_head = get_linear_layer(args.hidden_size, 2,
+                                                    init_method)
+                self._binary_head_key = 'binary_head'
+
+    def set_input_tensor(self, input_tensor):
+        """See megatron.model.transformer.set_input_tensor()"""
+        self.language_model.set_input_tensor(input_tensor)
+
+    def forward(self, bert_model_input, attention_mask,
+                tokentype_ids=None, lm_labels=None):
+
+        extended_attention_mask = bert_extended_attention_mask(attention_mask)
+        input_ids = bert_model_input
+        position_ids = bert_position_ids(input_ids)
+
+        lm_output = self.language_model(
+            input_ids,
+            position_ids,
+            extended_attention_mask,
+            tokentype_ids=tokentype_ids
+        )
+
+        if self.post_process and self.add_binary_head:
+            lm_output, pooled_output = lm_output
+        else:
+            pooled_output = None
+
+        if self.post_process:
+            return post_language_model_processing(lm_output, pooled_output,
+                                                  self.lm_head, self.binary_head,
+                                                  lm_labels,
+                                                  self.word_embeddings_weight(),
+                                                  self.fp16_lm_cross_entropy)
+        else:
+            return lm_output
+
+
+    def state_dict_for_save_checkpoint(self, destination=None, prefix='',
+                                       keep_vars=False):
+        """For easy load when model is combined with other heads,
+        add an extra key."""
+
+        state_dict_ = {}
+        state_dict_[self._language_model_key] \
+            = self.language_model.state_dict_for_save_checkpoint(
+            destination, prefix, keep_vars)
+        if self.post_process:
+            state_dict_[self._lm_head_key] \
+                = self.lm_head.state_dict_for_save_checkpoint(
+                destination, prefix, keep_vars)
+        if self.post_process and self.add_binary_head:
+            state_dict_[self._binary_head_key] \
+                = self.binary_head.state_dict(destination, prefix, keep_vars)
+        # Save word_embeddings.
+        if self.post_process and not self.pre_process:
+            state_dict_[self._word_embeddings_for_head_key] \
+                = self.word_embeddings.state_dict(destination, prefix, keep_vars)
+        return state_dict_
+
+    def load_state_dict(self, state_dict, strict=True):
+        """Customized load."""
+
+        self.language_model.load_state_dict(
+            state_dict[self._language_model_key], strict=strict)
+        if self.post_process:
+            self.lm_head.load_state_dict(
+                state_dict[self._lm_head_key], strict=strict)
+        if self.post_process and self.add_binary_head:
+            self.binary_head.load_state_dict(
+                state_dict[self._binary_head_key], strict=strict)
+        # Load word_embeddings.
+        if self.post_process and not self.pre_process:
+            self.word_embeddings.load_state_dict(
+                state_dict[self._word_embeddings_for_head_key], strict=strict)
+
+def bert_model_provider(pre_process=True, post_process=True):
+    model = BertModel(num_tokentypes=0, add_binary_head=False, pre_process=pre_process, post_process=post_process)
+    return model

apex/transformer/testing/standalone_gpt.py

@@ -67,7 +67,6 @@ def bias_gelu_back(g, bias, y):
     ff = 0.5 * x * ((1 - tanh_out * tanh_out) * (0.79788456 + 0.1070322243 * x * x)) + 0.5 * (1 + tanh_out)
     return ff * g
 
-
 class MegatronModule(torch.nn.Module):
     """Megatron specific extensions of torch Module with support
     for pipelining."""
@@ -76,26 +75,30 @@ class MegatronModule(torch.nn.Module):
         super(MegatronModule, self).__init__()
         self.share_word_embeddings = share_word_embeddings
 
-    def state_dict_for_save_checkpoint(self, destination=None, prefix="", keep_vars=False):
+
+    def state_dict_for_save_checkpoint(self, destination=None, prefix="",
+                                       keep_vars=False):
         """Use this function to override the state dict for
         saving checkpoints."""
         return self.state_dict(destination, prefix, keep_vars)
 
+
     def word_embeddings_weight(self):
-        if (
-            not parallel_state.is_pipeline_last_stage(ignore_virtual=True)
-            or parallel_state.get_pipeline_model_parallel_world_size() == 1
-        ):
+        if not parallel_state.is_pipeline_last_stage(ignore_virtual=True) or \
+                parallel_state.get_pipeline_model_parallel_world_size() == 1:
             return self.language_model.embedding.word_embeddings.weight
         else:
             if not self.share_word_embeddings:
-                raise Exception("word_embeddings_weight() called for last " "stage, but share_word_embeddings is false")
+                raise Exception("word_embeddings_weight() called for last "
+                                "stage, but share_word_embeddings is false")
             return self.word_embeddings.weight
 
+
     def initialize_word_embeddings(self, init_method_normal):
         args = get_args()
         if not self.share_word_embeddings:
-            raise Exception("initialize_word_embeddings() was called but " "share_word_embeddings is false")
+            raise Exception("initialize_word_embeddings() was called but "
+                            "share_word_embeddings is false")
 
         # This function just initializes the word embeddings in the final stage
         # when we are using pipeline parallelism. Nothing to do if we aren't
@@ -121,27 +124,25 @@ class MegatronModule(torch.nn.Module):
             # set word_embeddings weights to 0 here, then copy first
             # stage's weights using all_reduce below.
             self.word_embeddings = tensor_parallel.VocabParallelEmbedding(
-                args.padded_vocab_size, args.hidden_size, init_method=init_method_normal(args.init_method_std)
-            )
+                args.padded_vocab_size, args.hidden_size,
+                init_method=init_method_normal(args.init_method_std),
+		use_cpu_initialization=args.use_cpu_initialization)
             self.word_embeddings.weight.data.fill_(0)
             self.word_embeddings.weight.shared = True
 
         # Zero out initial weights for decoder embedding.
         # NOTE: We don't currently support T5 with the interleaved schedule.
-        if (
-            not parallel_state.is_pipeline_first_stage(ignore_virtual=True)
-            and not parallel_state.is_pipeline_last_stage(ignore_virtual=True)
-            and parallel_state.is_rank_in_embedding_group()
-        ):
+        if not parallel_state.is_pipeline_first_stage(ignore_virtual=True) and \
+                not parallel_state.is_pipeline_last_stage(ignore_virtual=True) and \
+                parallel_state.is_rank_in_embedding_group():
             self.language_model.embedding.zero_parameters()
 
         # Ensure that first and last stages have the same initial parameter
         # values.
         if torch.distributed.is_initialized():
             if parallel_state.is_rank_in_embedding_group():
-                torch.distributed.all_reduce(
-                    self.word_embeddings_weight().data, group=parallel_state.get_embedding_group()
-                )
+                torch.distributed.all_reduce(self.word_embeddings_weight().data,
+                                             group=parallel_state.get_embedding_group())
                 # All-reduce other embeddings as well as necessary. The last stage
                 # does not have these other embeddings, so just create placeholder
                 # tensors of the right shape with all zeros.
@@ -155,18 +156,14 @@ class MegatronModule(torch.nn.Module):
                     else:
                         self.language_model.embedding.cuda()
                         position_embeddings = self.language_model.embedding.position_embeddings
-                    torch.distributed.all_reduce(
-                        position_embeddings.weight.data, group=parallel_state.get_embedding_group()
-                    )
+                    torch.distributed.all_reduce(position_embeddings.weight.data,
+                                                 group=parallel_state.get_embedding_group())
         else:
-            print(
-                "WARNING! Distributed processes aren't initialized, so "
+            print("WARNING! Distributed processes aren't initialized, so "
                   "word embeddings in the last layer are not initialized. "
                   "If you are just manipulating a model this is fine, but "
                   "this needs to be handled manually. If you are training "
-                "something is definitely wrong."
-            )
-
+                  "something is definitely wrong.")
 
 class GeLUFunction(torch.autograd.Function):
     @staticmethod
@@ -248,8 +245,8 @@ class ParallelMLP(MegatronModule):
 
         # Project to 4h.
         self.dense_h_to_4h = tensor_parallel.ColumnParallelLinear(
-            args.hidden_size, args.ffn_hidden_size, gather_output=False, init_method=init_method, skip_bias_add=True
-        )
+            args.hidden_size, args.ffn_hidden_size, gather_output=False, init_method=init_method, skip_bias_add=True,
+        use_cpu_initialization=args.use_cpu_initialization)
 
         self.bias_gelu_fusion = args.bias_gelu_fusion
         self.activation_func = F.gelu
@@ -265,6 +262,7 @@ class ParallelMLP(MegatronModule):
             input_is_parallel=True,
             init_method=output_layer_init_method,
             skip_bias_add=True,
+            use_cpu_initialization=args.use_cpu_initialization
         )
 
     def forward(self, hidden_states):
@@ -322,17 +320,14 @@ class ParallelAttention(MegatronModule):
         # Strided linear layer.
         if attention_type == AttnType.self_attn:
             self.query_key_value = tensor_parallel.ColumnParallelLinear(
-                args.hidden_size, 3 * projection_size, gather_output=False, init_method=init_method
-            )
+                args.hidden_size, 3 * projection_size, gather_output=False, init_method=init_method, use_cpu_initialization=args.use_cpu_initialization)
         else:
             assert attention_type == AttnType.cross_attn
             self.query = tensor_parallel.ColumnParallelLinear(
-                args.hidden_size, projection_size, gather_output=False, init_method=init_method
-            )
+                args.hidden_size, projection_size, gather_output=False, init_method=init_method, use_cpu_initialization=args.use_cpu_initialization)
 
             self.key_value = tensor_parallel.ColumnParallelLinear(
-                args.hidden_size, 2 * projection_size, gather_output=False, init_method=init_method
-            )
+                args.hidden_size, 2 * projection_size, gather_output=False, init_method=init_method, use_cpu_initialization=args.use_cpu_initialization)
 
         coeff = None
         self.norm_factor = math.sqrt(self.hidden_size_per_attention_head)
@@ -362,6 +357,7 @@ class ParallelAttention(MegatronModule):
             input_is_parallel=True,
             init_method=output_layer_init_method,
             skip_bias_add=True,
+            use_cpu_initialization=args.use_cpu_initialization
         )
 
         # Inference key-value memory
@@ -1021,10 +1017,12 @@ class Embedding(MegatronModule):
         self.hidden_size = hidden_size
         self.init_method = init_method
         self.num_tokentypes = num_tokentypes
+        args = get_args()
 
         # Word embeddings (parallel).
         self.word_embeddings = tensor_parallel.VocabParallelEmbedding(
-            vocab_size, self.hidden_size, init_method=self.init_method
+            vocab_size, self.hidden_size, init_method=self.init_method,
+            use_cpu_initialization=args.use_cpu_initialization
         )
         self._word_embeddings_key = "word_embeddings"
 
@@ -1048,6 +1046,7 @@ class Embedding(MegatronModule):
 
         # Embeddings dropout
         self.embedding_dropout = torch.nn.Dropout(embedding_dropout_prob)
+        print("FINISH WORD EMBEDDING", self.word_embeddings)
 
     def zero_parameters(self):
         """Zero out all parameters in embedding."""
@@ -1500,7 +1499,6 @@ class GPTModel(MegatronModule):
             state_dict = state_dict[self._language_model_key]
         self.language_model.load_state_dict(state_dict, strict=strict)
 
-
 def gpt_model_provider(pre_process=True, post_process=True):
     model = GPTModel(num_tokentypes=0, parallel_output=True, pre_process=pre_process, post_process=post_process)
     return model

tests/L0/run_transformer/run_bert_minimal_test.py

+import random
+import torch
+
+from apex.transformer import tensor_parallel
+from apex.transformer import parallel_state
+from apex.transformer.tensor_parallel import vocab_parallel_cross_entropy
+from apex.transformer.pipeline_parallel.utils import setup_microbatch_calculator
+from apex.transformer.pipeline_parallel.utils import average_losses_across_data_parallel_group
+from apex.transformer.pipeline_parallel.schedules import get_forward_backward_func
+from apex.transformer.pipeline_parallel.schedules.common import build_model
+from apex.transformer.pipeline_parallel.schedules.common import _get_params_for_weight_decay_optimization
+
+from apex.transformer.testing.standalone_bert import bert_model_provider 
+from apex.transformer.testing import global_vars
+from apex.transformer.testing.commons import TEST_SUCCESS_MESSAGE
+from apex.transformer.testing.commons import initialize_distributed
+from apex.transformer.testing.commons import print_separator
+
+mode = None
+MANUAL_SEED = 42
+inds = None
+masks = None
+data_idx = 0
+MASK_PROB = 0.1
+EASY_MODE = False
+EASY_MODE_SIZ = 32
+ONCE = False
+
+# download a public domain book as corpus
+def download_fancy_data():
+  #import requests
+  #response = requests.get('https://internet.com/book.txt')
+  #text = ' '.join(response.text.split())
+  text = """
+  An original sentence not subject to any license restrictions, copyright, or royalty payments. Nothing to see here. Commercial or non-commercial use. Research or non-research purposes. The quick brown fox jumps over the lazy dog. Lorem ipsum.
+  """
+  text = text*1024
+  encoded = text.encode('ascii', 'replace')
+  ints = [int(encoded[i]) for i in range(len(encoded))]
+  return torch.tensor(ints)
+
+
+# build a batch given sequence_len and batch size
+def generate_fancy_data_labels(sequence_len, batch_size):
+  global data_idx
+  global inds
+  global masks
+  global MANUAL_SEED
+  temps = list()
+  for i in range(batch_size):
+     if inds is None or data_idx >= len(inds):
+       # hack as use of RNG will fall out of sync due to pipelines being different
+       torch.manual_seed(MANUAL_SEED)
+       inds = torch.randperm(effective_length, device='cuda')
+       masks = (torch.rand(len(inds)//batch_size + 1, batch_size, sequence_len, device='cuda') >= MASK_PROB).long()
+       MANUAL_SEED += 1
+       print("new epoch", len(inds))
+       data_idx = 0
+       print("my start", inds[0:5])
+       print("masks_checksum:", torch.sum(masks))
+     if EASY_MODE:
+       data_idx_ = data_idx % EASY_MODE_SIZ
+     else:
+       data_idx_ = data_idx
+     offset = inds[data_idx_] #* SEQUENCE_LEN
+     data_idx += 1
+      
+     curr = fancy_data[offset:offset+sequence_len].clone().detach()
+     temps.append(curr)
+  temp = torch.stack(temps, dim=0).cuda()
+  mask = masks[data_idx//batch_size]
+  mask_not = torch.logical_not(mask)
+  data = mask * temp + mask_not*124
+  label = temp
+  return (data, label, mask_not)
+
+easy_data = None
+
+def fwd_step_func(batch, model):
+    data, label, loss_mask = batch
+    data = data.cuda()
+    label = label.cuda()
+    loss_mask = loss_mask.cuda()
+    y = model(data, torch.ones_like(data), lm_labels=label)
+
+    def loss_func(output_tensor):
+        global ONCE
+        output_tensor, _ = output_tensor
+        lm_loss_ = output_tensor.float()
+        lm_loss = torch.sum(
+                        lm_loss_.view(-1) * loss_mask.reshape(-1)) / loss_mask.sum()
+        averaged_loss = average_losses_across_data_parallel_group([lm_loss])
+        if data_idx >= 1536:
+            assert lm_loss < 4.8
+            if not ONCE:
+                print("LOSS OK")
+                ONCE = True
+        return lm_loss, {'avg': averaged_loss}
+    return y, loss_func
+
+
+def train(model, optim, virtual_pipeline_model_parallel_size, pipeline_model_parallel_size):
+    sequence_len = global_vars.get_args().seq_length
+    micro_batch_size = global_vars.get_args().micro_batch_size
+    hidden_size = global_vars.get_args().hidden_size
+    forward_backward_func = get_forward_backward_func(virtual_pipeline_model_parallel_size, pipeline_model_parallel_size)
+    tensor_shape = (args.seq_length, args.micro_batch_size, args.hidden_size)
+    for _ in range(8):
+        batch = generate_fancy_data_labels(sequence_len, batch_size)
+        optim.zero_grad()
+        forward_backward_func(fwd_step_func, batch, model, forward_only=False, tensor_shape=tensor_shape)
+        optim.step()
+
+if __name__ == '__main__':
+    global fancy_data
+    global effective_length
+
+    global_vars.set_global_variables()
+
+    fancy_data = download_fancy_data()
+    effective_length = fancy_data.size(0) // global_vars.get_args().seq_length
+    effective_length = fancy_data.size(0) - global_vars.get_args().seq_length
+
+
+    initialize_distributed()
+    world_size = torch.distributed.get_world_size()
+    failure = None
+    try:
+        args = global_vars.get_args()
+        args.padded_vocab_size = 128 # needed in standalone gpt
+        batch_size = args.global_batch_size
+        micro_batch_size = args.micro_batch_size
+        setup_microbatch_calculator(
+            args.rank,
+            args.rampup_batch_size,
+            args.global_batch_size,
+            args.micro_batch_size,
+            1,  # args.data_parallel_size,
+        )
+        virtual_pipeline_model_parallel_size = 2
+        world_size = torch.distributed.get_world_size()
+        pipeline_model_parallel_size = world_size
+        parallel_state.initialize_model_parallel(
+            1, pipeline_model_parallel_size, virtual_pipeline_model_parallel_size)
+        pipeline_model_parallel_size = parallel_state.get_pipeline_model_parallel_world_size()
+        tensor_parallel.random.model_parallel_cuda_manual_seed(0)
+        model = build_model(
+            bert_model_provider,
+            wrap_with_ddp=True,
+            virtual_pipeline_model_parallel_size=virtual_pipeline_model_parallel_size,
+        )
+        assert isinstance(model, list)
+        assert len(model) == (1 if virtual_pipeline_model_parallel_size is None else virtual_pipeline_model_parallel_size)
+        _param_groups = _get_params_for_weight_decay_optimization(model)
+        optim = torch.optim.Adam(_param_groups)
+        print(effective_length)
+        print(fancy_data.size(0))
+        train(model, optim, virtual_pipeline_model_parallel_size, pipeline_model_parallel_size)
+    except Exception as e:
+        failure = str(e)
+    finally:
+        parallel_state.destroy_model_parallel()
+    if failure is not None:
+        torch.distributed.barrier()
+        if torch.distributed.get_rank() == 0:
+            print(f"Minimal BERT Pipeline Parallel Failed with: {failure}")
+    else:
+        torch.distributed.barrier()
+        if torch.distributed.get_rank() == 0:
+            print(TEST_SUCCESS_MESSAGE)

tests/L0/run_transformer/run_pipeline_parallel_test.py

@@ -125,7 +125,7 @@ def forward_backward_func_template(
     assert isinstance(model, list)
     assert len(model) == (1 if virtual_pipeline_model_parallel_size is None else virtual_pipeline_model_parallel_size)
     _param_groups = _get_params_for_weight_decay_optimization(model)
-    torch.optim.Adam(_param_groups)
+    torch.optim.Adam(_param_groups, lr=1e-4)
 
     tensor_shape = [batch_size // parallel_state.get_data_parallel_world_size(), hidden_size]
     batch = (torch.randn(tensor_shape).cuda(),)

tests/L0/run_transformer/test_transformer_module.py

@@ -12,18 +12,27 @@ MULTIGPU_TEST = [
     "pipeline_parallel_test",
     "dynamic_batchsize_test",
 ]
+SEVERALGPU_TEST = [
+    "bert_minimal_test",
+]
 
-
-def get_launch_option(test_filename) -> Tuple[bool, str]:
+def get_multigpu_launch_option(min_gpu):
     should_skip = False
-    for multigpu_test in MULTIGPU_TEST:
-        if multigpu_test in test_filename:
     import torch
     num_devices = torch.cuda.device_count()
-            if num_devices < 2:
+    if num_devices < min_gpu:
         should_skip = True
     distributed_run_options = f"-m torch.distributed.run --nproc_per_node={num_devices}"
     return should_skip, distributed_run_options
+
+def get_launch_option(test_filename) -> Tuple[bool, str]:
+    should_skip = False
+    for multigpu_test in MULTIGPU_TEST:
+        if multigpu_test in test_filename:
+            return get_multigpu_launch_option(2)
+    for severalgpu_test in SEVERALGPU_TEST:
+        if severalgpu_test in test_filename:
+            return get_multigpu_launch_option(3)
     return should_skip, ""
 
 
@@ -55,9 +64,15 @@ def run_transformer_tests():
             continue
         test_run_cmd = (
             f"{python_executable_path} {launch_option} {test_file} "
-            "--micro-batch-size 2 --num-layers 1 --hidden-size 256 --num-attention-heads 8 --max-position-embeddings "
-            "32 --encoder-seq-length 32 --use-cpu-initialization"
+            "--micro-batch-size 4 --num-layers 16 --hidden-size 768 --num-attention-heads 8 --max-position-embeddings "
+            "512 --seq-length 512 --global-batch-size 256"
         )
+        if 'bert' in test_file:
+            import torch
+            num_devices = torch.cuda.device_count()
+            test_run_cmd += f" --pipeline-model-parallel-size {num_devices}"
+        else:
+            test_run_cmd += f" --use-cpu-initialization"
         print(f"### {i} / {len(files)}: cmd: {test_run_cmd}")
         try:
             output = subprocess.check_output(