picking this PR up after a while

src/sparseml/exporters/transforms/kv_cache/configs.py

@@ -26,6 +26,9 @@
 from sparseml.exporters.transforms.kv_cache.transforms_llama import (
     AdditionalTransformsLLAMA,
 )
+from sparseml.exporters.transforms.kv_cache.transforms_mpt import (
+    AdditionalTransformsMPT,
+)
 from sparseml.exporters.transforms.kv_cache.transforms_opt import (
     AdditionalTransformsOPT,
 )
@@ -105,6 +108,16 @@ class Config:
     multiply_batch_by_num_att_heads=False,
 )
 
+MPT_CONFIG = KeyValueCacheConfig(
+    model_name="mpt",
+    additional_transforms=AdditionalTransformsMPT,
+    key_num_attention_heads="n_heads",
+    key_num_embedding_hidden_size="d_model",
+    transpose_value_input=None,
+    transpose_key_input=(0, 1, 3, 2),
+    multiply_batch_by_num_att_heads=False,
+)
+
 BLOOM_CONFIG = KeyValueCacheConfig(
     model_name="bloom",
     additional_transforms=None,
@@ -132,6 +145,7 @@ def get_kv_cache_config(
         OPT_CONFIG,
         CODEGEN_CONFIG,
         BLOOM_CONFIG,
+        MPT_CONFIG,
         LLAMA_CONFIG,
     ],
 ) -> KeyValueCacheConfig:

src/sparseml/exporters/transforms/kv_cache/transforms_mpt.py

@@ -0,0 +1,130 @@
+# Copyright (c) 2021 - present / Neuralmagic, Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+
+import onnx
+from onnx import ModelProto, TensorProto
+
+from sparseml.exporters.transforms.kv_cache.transforms_base import (
+    AdditionalTransformsBase,
+)
+from sparseml.onnx.utils.graph_editor import ONNXGraph
+from sparseml.onnx.utils.helpers import get_nodes_by_input_id
+
+
+_LOGGER = logging.getLogger(__name__)
+
+
+class AdditionalTransformsMPT(AdditionalTransformsBase):
+
+    CAUSAL_MASK_MATCHING_PATTERN = dict(op_type="Cast", children_ops=[["Where"]])
+
+    def transform(self, model: ModelProto) -> ModelProto:
+        """
+        1. Adds `causal_mask` as an input to the model
+        2. Finds the nodes that initially create the `causal_mask` tensors
+        3. Updates the nodes to use the causal_mask input instead of
+              computing it from the Cast op
+
+        :param model: model to update
+        :return: updated model
+        """
+        model = self.add_causal_mask_input(model)
+        causal_mask_nodes = self.find_nodes_by_pattern(
+            model, pattern=self.CAUSAL_MASK_MATCHING_PATTERN
+        )
+
+        model = self.inject_causal_mask(model, causal_mask_nodes, "Where")
+        model = self.adjust_causal_mask(model)
+
+        return model
+
+    def adjust_causal_mask(self, model: ModelProto) -> ModelProto:
+        """
+        Insert a `Cast` and `Not` node after the causal mask input to change
+        the initial int64, to a mask of bools expected by the model.
+
+        Transform:
+        ```
+        |       causal_mask
+        |            |
+        |   causal_mask_input_child
+        ```
+        to:
+        ```
+        |       causal_mask
+        |            |
+        |          Cast
+        |        (to bool)
+        |            |
+        |           Not
+        |        (to negate)
+        |            |
+        |            |
+        |   causal_mask_input_child
+
+        The resulting node will change the input int64 mask,
+        e.g.
+        ```
+        causal_mask =
+            [[[[1, 1, 1, 0, 0, 0],
+                [1, 1, 1, 1, 0, 0],
+                [1, 1, 1, 1, 1, 0],
+                [1, 1, 1, 1, 1, 1]]]]
+        ```
+
+        to a mask of bools:
+        ```
+        causal_mask_adjusted =
+            [[[[False, False, False, True, True, True],
+                [False, False, False, False, True, True],
+                [False, False, False, False, False, True],
+                [False, False, False, False, False, False]]]]
+        ```
+
+        :param model: the model to update
+        :return: the updated model
+        """
+
+        graph = ONNXGraph(model)
+
+        cast_node = onnx.helper.make_node(
+            "Cast",
+            inputs=[self.CAUSAL_MASK_NAME],
+            outputs=[f"{self.CAUSAL_MASK_NAME}_cast"],
+            to=TensorProto.BOOL,
+        )
+
+        not_node = onnx.helper.make_node(
+            "Not",
+            inputs=[f"{self.CAUSAL_MASK_NAME}_cast"],
+            outputs=[f"{self.CAUSAL_MASK_NAME}_not"],
+        )
+
+        # get the nodes that take the causal mask as input
+        # and replace the input with the adjusted causal mask input
+        causal_mask_input_children = get_nodes_by_input_id(model, self.CAUSAL_MASK_NAME)
+        for causal_mask_input_child in causal_mask_input_children:
+            for idx, input_name in enumerate(causal_mask_input_child.input):
+                if input_name == self.CAUSAL_MASK_NAME:
+                    causal_mask_input_child.input[idx] = f"{self.CAUSAL_MASK_NAME}_not"
+
+        for node in [cast_node, not_node]:
+            graph.add_node(node)
+            self.log_match(node)
+
+        _LOGGER.info(f"Successfully adjusted the {self.CAUSAL_MASK_NAME} input")
+
+        return model