vbatts/llama.cpp
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refactor: better refactor

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younesbelkada 2024-08-18 12:02:36 +00:00
parent bfa0286866
commit b97704c9a0
1 changed files with 10 additions and 39 deletions
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45
convert_hf_to_gguf.py
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@ -2711,7 +2711,7 @@ class StarCoder2Model(Model):
model_arch = gguf.MODEL_ARCH.STARCODER2
@Model.register("MambaForCausalLM", "MambaLMHeadModel")
@Model.register("MambaForCausalLM", "MambaLMHeadModel", "FalconMambaForCausalLM")
class MambaModel(Model):
model_arch = gguf.MODEL_ARCH.MAMBA
@ -2742,7 +2742,11 @@ class MambaModel(Model):
# ref: https://github.com/state-spaces/mamba/blob/ce59daea3a090d011d6476c6e5b97f6d58ddad8b/mamba_ssm/modules/mamba_simple.py#L58
dt_rank = self.find_hparam(["time_step_rank", "dt_rank"], optional=True) or -(d_model // -16)
rms_norm_eps = self.find_hparam(["layer_norm_epsilon", "rms_norm_eps"], optional=True) or 1e-5
num_hidden_layers = self.find_hparam(["n_layer", "num_hidden_layers"])
use_b_dt_norm = False
# For falconmamba we do apply RMS norm on B / DT and C layers
if self.find_hparam(["model_type"]) in ["falcon_mamba"]:
use_b_dt_norm = True
# Fail early for models which don't have a block expansion factor of 2
assert d_inner == 2 * d_model
@ -2750,13 +2754,13 @@ class MambaModel(Model):
self.gguf_writer.add_embedding_length(d_model)
self.gguf_writer.add_feed_forward_length(0) # unused, but seemingly required when loading
self.gguf_writer.add_head_count(0) # unused, but seemingly required when loading
self.gguf_writer.add_block_count(self.hparams["n_layer"])
self.gguf_writer.add_block_count(num_hidden_layers)
self.gguf_writer.add_ssm_conv_kernel(d_conv)
self.gguf_writer.add_ssm_inner_size(d_inner)
self.gguf_writer.add_ssm_state_size(d_state)
self.gguf_writer.add_ssm_time_step_rank(dt_rank)
self.gguf_writer.add_layer_norm_rms_eps(rms_norm_eps)
self.gguf_writer.add_mamba_b_dt_rms(False) # For classic Mamba we don't apply rms norm on B / DT layers
self.gguf_writer.add_mamba_b_dt_rms(use_b_dt_norm) # For classic Mamba we don't apply rms norm on B / DT layers
self.gguf_writer.add_file_type(self.ftype)
_tok_embd = None
@ -3857,41 +3861,8 @@ class ExaoneModel(Model):
super().prepare_tensors()
@Model.register("FalconMambaForCausalLM")
class FalconMambaModel(MambaModel):
model_arch = gguf.MODEL_ARCH.MAMBA
def set_gguf_parameters(self):
d_model = self.find_hparam(["hidden_size", "d_model"])
d_conv = self.find_hparam(["conv_kernel", "d_conv"], optional=True) or 4
d_inner = self.find_hparam(["intermediate_size", "d_inner"], optional=True) or 2 * d_model
d_state = self.find_hparam(["state_size", "d_state"], optional=True) or 16
# ceiling division
# ref: https://stackoverflow.com/a/17511341/22827863
# ref: https://github.com/state-spaces/mamba/blob/ce59daea3a090d011d6476c6e5b97f6d58ddad8b/mamba_ssm/modules/mamba_simple.py#L58
dt_rank = self.find_hparam(["time_step_rank", "dt_rank"], optional=True) or -(d_model // -16)
rms_norm_eps = self.find_hparam(["layer_norm_epsilon", "rms_norm_eps"], optional=True) or 1e-5
# Fail early for models which don't have a block expansion factor of 2
assert d_inner == 2 * d_model
self.gguf_writer.add_context_length(2**20) # arbitrary value; for those who use the default
self.gguf_writer.add_embedding_length(d_model)
self.gguf_writer.add_feed_forward_length(0) # unused, but seemingly required when loading
self.gguf_writer.add_head_count(0) # unused, but seemingly required when loading
self.gguf_writer.add_block_count(self.hparams["num_hidden_layers"])
self.gguf_writer.add_ssm_conv_kernel(d_conv)
self.gguf_writer.add_mamba_b_dt_rms(True) # For FalconMamba we do apply rms norm on B / DT layers
self.gguf_writer.add_ssm_inner_size(d_inner)
self.gguf_writer.add_ssm_state_size(d_state)
self.gguf_writer.add_ssm_time_step_rank(dt_rank)
self.gguf_writer.add_layer_norm_rms_eps(rms_norm_eps)
self.gguf_writer.add_file_type(self.ftype)
###### CONVERSION LOGIC ######
# tree of lazy tensors
class LazyTorchTensor(gguf.LazyBase):
_tensor_type = torch.Tensor