diff --git a/examples/moe_recipes/README.md b/examples/moe_recipes/README.md
index 189aa540f82..291d2be6a7e 100644
--- a/examples/moe_recipes/README.md
+++ b/examples/moe_recipes/README.md
@@ -56,6 +56,21 @@ This directory contains self-contained MoE training recipes. Each YAML file incl
1/8192/4096 |
DeepEP; EP overlap |
+
+ | DeepSeek-V4 Flash |
+ GB200 MXFP8 |
+ 128 |
+ 1/1/64/1/1 |
+ 1/2048/4096 |
+ DSv4 hybrid attention; Hyper-Connections; HybridEP; offload |
+
+
+ | GB300 MXFP8 |
+ 128 |
+ 1/1/64/1/1 |
+ 2/2048/4096 |
+ DSv4 hybrid attention; Hyper-Connections; HybridEP; offload |
+
| Qwen3-235B-A22B |
GB200 MXFP8 full CG |
diff --git a/examples/moe_recipes/deepseek_v4_flash/gb200/mxfp8_SL4K_128GPU_TP1PP2EP64.yaml b/examples/moe_recipes/deepseek_v4_flash/gb200/mxfp8_SL4K_128GPU_TP1PP2EP64.yaml
new file mode 100644
index 00000000000..09cc4776ced
--- /dev/null
+++ b/examples/moe_recipes/deepseek_v4_flash/gb200/mxfp8_SL4K_128GPU_TP1PP2EP64.yaml
@@ -0,0 +1,248 @@
+DEPENDENCIES:
+ pytorch_base_image: nvcr.io/nvidia/pytorch:26.04-py3
+ dockerfile: |
+ # Copyright (c) 2026, NVIDIA CORPORATION. All rights reserved.
+ # IMAGE_NAME: dsv4-gb200-torch2604:nvrx060
+ #
+ # DeepSeek-V4 training container for GB200 (arm64), including
+ # nvidia-resiliency-ext 0.6.0 for current Megatron-LM imports.
+ #
+ # Adds on top of gb200-torch2603:
+ # - PyTorch 26.04 base
+ # - TE @ 01aef4fc (release_v2.9 + CPU & quantization opts)
+ # - HybridEP @ 1b8f4679
+ # - flash-attn-4==4.0.0b4, nvidia-cutlass-dsl==4.4.2, nvidia-mathdx==25.1.1
+ # - Fast Hadamard Transform (for DSA indexer)
+ # - Emerging-Optimizers (Muon)
+ # - FlashMLA nv_dev branch (dsa_kernels)
+ # - nvidia-cudnn-frontend with CuTe DSL support
+
+ FROM nvcr.io/nvidia/pytorch:26.04-py3 AS base
+
+ ENV SHELL=/bin/bash
+
+ # System packages + yq
+ RUN bash -ex <<"EOF"
+ rm -rf /opt/megatron-lm
+ apt-get update
+ apt-get install -y --no-install-recommends \
+ sudo gdb bash-builtins git zsh autojump tmux curl gettext libfabric-dev
+ wget https://github.com/mikefarah/yq/releases/download/v4.27.5/yq_linux_arm64 -O /usr/bin/yq
+ chmod +x /usr/bin/yq
+ apt-get clean
+ rm -rf /var/lib/apt/lists/*
+ EOF
+
+ # Python deps (mcore + dev + test + cutlass-dsl pin)
+ RUN unset PIP_CONSTRAINT && pip install --no-cache-dir \
+ debugpy dm-tree torch_tb_profiler einops wandb \
+ sentencepiece tokenizers transformers==4.57.1 torchvision ftfy modelcards datasets tqdm pydantic omegaconf \
+ nvidia-pytriton py-spy yapf darker \
+ tiktoken flask-restful \
+ nltk wrapt pytest pytest_asyncio pytest-cov pytest_mock pytest-random-order \
+ black==24.4.2 isort==5.13.2 flake8==7.1.0 pylint==3.2.6 coverage mypy \
+ setuptools==69.5.1 nvidia-cutlass-dsl==4.4.2
+
+ # TransformerEngine pinned to release_v2.9-based commit with CPU/quantization fixes
+ ARG TE_COMMIT="01aef4fc721bd12fd09cd56d53a314aee1b953d6"
+ RUN pip install --no-cache-dir flash-attn-4==4.0.0b4 nvidia-mathdx==25.1.1 && \
+ unset PIP_CONSTRAINT && \
+ NVTE_CUDA_ARCHS="100a;103a" NVTE_BUILD_THREADS_PER_JOB=8 NVTE_FRAMEWORK=pytorch \
+ pip install --no-build-isolation --no-cache-dir \
+ "git+https://github.com/NVIDIA/TransformerEngine.git@${TE_COMMIT}"
+
+ # HybridEP
+ WORKDIR /home/
+ RUN git clone --branch hybrid-ep https://github.com/deepseek-ai/DeepEP.git && \
+ cd DeepEP && git checkout 1b8f467965bb818bf2f6511e06993f5607e1721f && \
+ TORCH_CUDA_ARCH_LIST="10.0" pip install --no-build-isolation .
+
+ # Fast Hadamard Transform (used by DSA indexer)
+ WORKDIR /home/
+ RUN git clone https://github.com/Dao-AILab/fast-hadamard-transform.git && \
+ cd fast-hadamard-transform && \
+ pip install --no-build-isolation .
+
+ # Emerging-Optimizers (Muon)
+ WORKDIR /home/
+ RUN git clone https://github.com/NVIDIA-NeMo/Emerging-Optimizers.git && \
+ cd Emerging-Optimizers && \
+ pip install --no-build-isolation .
+
+ # FlashMLA (DSA kernels)
+ WORKDIR /opt/
+ RUN git clone --branch nv_dev https://github.com/deepseek-ai/FlashMLA.git && \
+ cd FlashMLA && \
+ FLASH_MLA_DISABLE_SM90=1 \
+ NVCC_THREADS=16 \
+ CFLAGS="-I/usr/local/cuda/include/cccl" \
+ CXXFLAGS="-I/usr/local/cuda/include/cccl" \
+ pip install --no-build-isolation .
+
+ # cuDNN frontend with CuTe DSL support
+ RUN pip install --no-cache-dir "nvidia-cudnn-frontend[cutedsl]>=1.23.0"
+
+ # Current Megatron-LM DSv4 imports require nvidia-resiliency-ext 0.6.0.
+ RUN unset PIP_CONSTRAINT && \
+ pip install --no-cache-dir nvidia-resiliency-ext==0.6.0
+
+ # Cleanup
+ RUN rm -rf /root/.cache /tmp/*
+ WORKDIR /home/
+ENV_VARS:
+ TORCH_NCCL_AVOID_RECORD_STREAMS: '0'
+ NVTE_ALLOW_NONDETERMINISTIC_ALGO: '1'
+ PYTORCH_CUDA_ALLOC_CONF: expandable_segments:True,graph_capture_record_stream_reuse:True
+ NCCL_NVLS_ENABLE: '0'
+ NVTE_FUSED_ATTN: '1'
+ NVTE_NORM_FWD_USE_CUDNN: '1'
+ NVTE_NORM_BWD_USE_CUDNN: '1'
+ PYTHONWARNINGS: ignore
+ NCCL_DEBUG: VERSION
+ NCCL_GRAPH_REGISTER: '0'
+ NVTE_CUTEDSL_FUSED_GROUPED_MLP: '1'
+ NVTE_CPU_OFFLOAD_V1: '1'
+ NUM_OF_TOKENS_PER_CHUNK_COMBINE_API: '128'
+ NUM_OF_STAGES_DISPATCH_API: '10'
+ NUM_OF_IN_FLIGHT_S2G_DISPATCH_API: '8'
+ARGS:
+ tokenizer_type: HuggingFaceTokenizer
+ tokenizer_model: unsloth/DeepSeek-V3
+ num_layers: 43
+ hidden_size: 4096
+ num_attention_heads: 64
+ kv_channels: 512
+ max_position_embeddings: 4096
+ normalization: RMSNorm
+ norm_epsilon: 1e-6
+ swiglu: true
+ disable_bias_linear: true
+ untie_embeddings_and_output_weights: true
+ position_embedding_type: rope
+ rotary_base: 10000
+ make_vocab_size_divisible_by: 3232
+ multi_latent_attention: true
+ q_lora_rank: 1024
+ qk_pos_emb_head_dim: 64
+ v_head_dim: 512
+ rotary_scaling_factor: 4
+ mscale: 1.0
+ mscale_all_dim: 1.0
+ qk_layernorm: true
+ o_groups: 8
+ o_lora_rank: 1024
+ original_max_position_embeddings: 65536
+ experimental_attention_variant: dsv4_hybrid
+ csa_window_size: 128
+ csa_compress_ratios: ([0,0,4]+[128,4]*20+[0])
+ csa_compress_rotary_base: 40000
+ dsa_indexer_n_heads: 64
+ dsa_indexer_head_dim: 128
+ dsa_indexer_topk: 512
+ dsa_indexer_loss_coeff: 1e-2
+ dsa_indexer_use_sparse_loss: true
+ num_experts: 256
+ moe_n_hash_layers: 3
+ moe_ffn_hidden_size: 2048
+ moe_shared_expert_intermediate_size: 2048
+ moe_router_load_balancing_type: seq_aux_loss
+ moe_router_topk: 6
+ moe_aux_loss_coeff: 1e-4
+ moe_router_topk_scaling_factor: 1.5
+ moe_router_score_function: sqrtsoftplus
+ moe_router_enable_expert_bias: true
+ moe_router_bias_update_rate: 1e-3
+ activation_func_clamp_value: 10.0
+ enable_hyper_connections: true
+ num_residual_streams: 4
+ mhc_sinkhorn_iterations: 20
+ use_fused_mhc: true
+ mtp_num_layers: 1
+ mtp_loss_scaling_factor: 0.1
+ attention_dropout: 0.0
+ hidden_dropout: 0.0
+ mock_data: true
+ seq_length: 4096
+ moe_router_force_load_balancing: true
+ tensor_model_parallel_size: 1
+ pipeline_model_parallel_size: 1
+ expert_model_parallel_size: 64
+ context_parallel_size: 1
+ expert_tensor_parallel_size: 1
+ use_distributed_optimizer: true
+ sequence_parallel: true
+ overlap_grad_reduce: true
+ overlap_param_gather: true
+ moe_token_dispatcher_type: flex
+ moe_flex_dispatcher_backend: hybridep
+ moe_hybridep_num_sms: 32
+ moe_grouped_gemm: true
+ moe_permute_fusion: true
+ moe_router_fusion: true
+ moe_router_dtype: fp32
+ cuda_graph_impl: transformer_engine
+ cuda_graph_scope:
+ - attn
+ - moe_router
+ - moe_preprocess
+ te_rng_tracker: true
+ cuda_graph_warmup_steps: 1
+ offload_optimizer_states: true
+ fine_grained_activation_offloading: true
+ offload_modules:
+ - expert_fc1
+ delay_offload_until_cuda_graph: true
+ use_mcore_models: true
+ use_flash_attn: true
+ transformer_impl: transformer_engine
+ micro_batch_size: 1
+ global_batch_size: 2048
+ train_samples: 585937500
+ exit_duration_in_mins: 220
+ no_save_optim: true
+ no_check_for_nan_in_loss_and_grad: true
+ cross_entropy_loss_fusion: true
+ cross_entropy_fusion_impl: te
+ no_create_attention_mask_in_dataloader: true
+ manual_gc: true
+ manual_gc_interval: 10
+ lr: 3.9e-06
+ min_lr: 3.9e-07
+ lr_warmup_init: 3.9e-07
+ lr_decay_style: cosine
+ lr_decay_samples: 584765624
+ lr_warmup_samples: 1536000
+ weight_decay: 0.1
+ clip_grad: 1.0
+ adam_beta1: 0.9
+ adam_beta2: 0.95
+ bf16: true
+ fp8_recipe: mxfp8
+ fp8_format: e4m3
+ fp8_param_gather: true
+ reuse_grad_buf_for_mxfp8_param_ag: true
+ use_precision_aware_optimizer: true
+ main_grads_dtype: fp32
+ main_params_dtype: fp32
+ exp_avg_dtype: bf16
+ exp_avg_sq_dtype: bf16
+ moe_router_padding_for_quantization: true
+ init_method_std: 0.02
+ eval_iters: 32
+ eval_interval: 200
+ finetune: false
+ no_load_optim: true
+ no_load_rng: true
+ auto_detect_ckpt_format: true
+ load: ${LOAD_PATH}
+ save_interval: 500
+ dist_ckpt_strictness: log_all
+ log_throughput: true
+ log_interval: 1
+ logging_level: 20
+ log_timers_to_tensorboard: true
+ log_memory_to_tensorboard: true
+ log_validation_ppl_to_tensorboard: true
+ tensorboard_dir: ${OUTPUT_PATH}/tensorboard
+ wandb_exp_name: DeepSeek-V4-Flash-GB200-MXFP8-TP1PP1EP64-GBS2048SEQLEN4096
+ enable_experimental: true
diff --git a/examples/moe_recipes/deepseek_v4_flash/gb300/mxfp8_SL4K_128GPU_TP1PP1EP64.yaml b/examples/moe_recipes/deepseek_v4_flash/gb300/mxfp8_SL4K_128GPU_TP1PP1EP64.yaml
new file mode 100644
index 00000000000..e80bdbbb5b5
--- /dev/null
+++ b/examples/moe_recipes/deepseek_v4_flash/gb300/mxfp8_SL4K_128GPU_TP1PP1EP64.yaml
@@ -0,0 +1,248 @@
+DEPENDENCIES:
+ pytorch_base_image: nvcr.io/nvidia/pytorch:26.04-py3
+ dockerfile: |
+ # Copyright (c) 2026, NVIDIA CORPORATION. All rights reserved.
+ # IMAGE_NAME: dsv4-gb200-torch2604:nvrx060
+ #
+ # DeepSeek-V4 training container for GB200 (arm64), including
+ # nvidia-resiliency-ext 0.6.0 for current Megatron-LM imports.
+ #
+ # Adds on top of gb200-torch2603:
+ # - PyTorch 26.04 base
+ # - TE @ 01aef4fc (release_v2.9 + CPU & quantization opts)
+ # - HybridEP @ 1b8f4679
+ # - flash-attn-4==4.0.0b4, nvidia-cutlass-dsl==4.4.2, nvidia-mathdx==25.1.1
+ # - Fast Hadamard Transform (for DSA indexer)
+ # - Emerging-Optimizers (Muon)
+ # - FlashMLA nv_dev branch (dsa_kernels)
+ # - nvidia-cudnn-frontend with CuTe DSL support
+
+ FROM nvcr.io/nvidia/pytorch:26.04-py3 AS base
+
+ ENV SHELL=/bin/bash
+
+ # System packages + yq
+ RUN bash -ex <<"EOF"
+ rm -rf /opt/megatron-lm
+ apt-get update
+ apt-get install -y --no-install-recommends \
+ sudo gdb bash-builtins git zsh autojump tmux curl gettext libfabric-dev
+ wget https://github.com/mikefarah/yq/releases/download/v4.27.5/yq_linux_arm64 -O /usr/bin/yq
+ chmod +x /usr/bin/yq
+ apt-get clean
+ rm -rf /var/lib/apt/lists/*
+ EOF
+
+ # Python deps (mcore + dev + test + cutlass-dsl pin)
+ RUN unset PIP_CONSTRAINT && pip install --no-cache-dir \
+ debugpy dm-tree torch_tb_profiler einops wandb \
+ sentencepiece tokenizers transformers==4.57.1 torchvision ftfy modelcards datasets tqdm pydantic omegaconf \
+ nvidia-pytriton py-spy yapf darker \
+ tiktoken flask-restful \
+ nltk wrapt pytest pytest_asyncio pytest-cov pytest_mock pytest-random-order \
+ black==24.4.2 isort==5.13.2 flake8==7.1.0 pylint==3.2.6 coverage mypy \
+ setuptools==69.5.1 nvidia-cutlass-dsl==4.4.2
+
+ # TransformerEngine pinned to release_v2.9-based commit with CPU/quantization fixes
+ ARG TE_COMMIT="01aef4fc721bd12fd09cd56d53a314aee1b953d6"
+ RUN pip install --no-cache-dir flash-attn-4==4.0.0b4 nvidia-mathdx==25.1.1 && \
+ unset PIP_CONSTRAINT && \
+ NVTE_CUDA_ARCHS="100a;103a" NVTE_BUILD_THREADS_PER_JOB=8 NVTE_FRAMEWORK=pytorch \
+ pip install --no-build-isolation --no-cache-dir \
+ "git+https://github.com/NVIDIA/TransformerEngine.git@${TE_COMMIT}"
+
+ # HybridEP
+ WORKDIR /home/
+ RUN git clone --branch hybrid-ep https://github.com/deepseek-ai/DeepEP.git && \
+ cd DeepEP && git checkout 1b8f467965bb818bf2f6511e06993f5607e1721f && \
+ TORCH_CUDA_ARCH_LIST="10.0" pip install --no-build-isolation .
+
+ # Fast Hadamard Transform (used by DSA indexer)
+ WORKDIR /home/
+ RUN git clone https://github.com/Dao-AILab/fast-hadamard-transform.git && \
+ cd fast-hadamard-transform && \
+ pip install --no-build-isolation .
+
+ # Emerging-Optimizers (Muon)
+ WORKDIR /home/
+ RUN git clone https://github.com/NVIDIA-NeMo/Emerging-Optimizers.git && \
+ cd Emerging-Optimizers && \
+ pip install --no-build-isolation .
+
+ # FlashMLA (DSA kernels)
+ WORKDIR /opt/
+ RUN git clone --branch nv_dev https://github.com/deepseek-ai/FlashMLA.git && \
+ cd FlashMLA && \
+ FLASH_MLA_DISABLE_SM90=1 \
+ NVCC_THREADS=16 \
+ CFLAGS="-I/usr/local/cuda/include/cccl" \
+ CXXFLAGS="-I/usr/local/cuda/include/cccl" \
+ pip install --no-build-isolation .
+
+ # cuDNN frontend with CuTe DSL support
+ RUN pip install --no-cache-dir "nvidia-cudnn-frontend[cutedsl]>=1.23.0"
+
+ # Current Megatron-LM DSv4 imports require nvidia-resiliency-ext 0.6.0.
+ RUN unset PIP_CONSTRAINT && \
+ pip install --no-cache-dir nvidia-resiliency-ext==0.6.0
+
+ # Cleanup
+ RUN rm -rf /root/.cache /tmp/*
+ WORKDIR /home/
+ENV_VARS:
+ TORCH_NCCL_AVOID_RECORD_STREAMS: '0'
+ NVTE_ALLOW_NONDETERMINISTIC_ALGO: '1'
+ PYTORCH_CUDA_ALLOC_CONF: expandable_segments:True,graph_capture_record_stream_reuse:True
+ NCCL_NVLS_ENABLE: '0'
+ NVTE_FUSED_ATTN: '1'
+ NVTE_NORM_FWD_USE_CUDNN: '1'
+ NVTE_NORM_BWD_USE_CUDNN: '1'
+ PYTHONWARNINGS: ignore
+ NCCL_DEBUG: VERSION
+ NCCL_GRAPH_REGISTER: '0'
+ NVTE_CUTEDSL_FUSED_GROUPED_MLP: '1'
+ NVTE_CPU_OFFLOAD_V1: '1'
+ NUM_OF_TOKENS_PER_CHUNK_COMBINE_API: '128'
+ NUM_OF_STAGES_DISPATCH_API: '10'
+ NUM_OF_IN_FLIGHT_S2G_DISPATCH_API: '8'
+ARGS:
+ tokenizer_type: HuggingFaceTokenizer
+ tokenizer_model: unsloth/DeepSeek-V3
+ num_layers: 43
+ hidden_size: 4096
+ num_attention_heads: 64
+ kv_channels: 512
+ max_position_embeddings: 4096
+ normalization: RMSNorm
+ norm_epsilon: 1e-6
+ swiglu: true
+ disable_bias_linear: true
+ untie_embeddings_and_output_weights: true
+ position_embedding_type: rope
+ rotary_base: 10000
+ make_vocab_size_divisible_by: 3232
+ multi_latent_attention: true
+ q_lora_rank: 1024
+ qk_pos_emb_head_dim: 64
+ v_head_dim: 512
+ rotary_scaling_factor: 4
+ mscale: 1.0
+ mscale_all_dim: 1.0
+ qk_layernorm: true
+ o_groups: 8
+ o_lora_rank: 1024
+ original_max_position_embeddings: 65536
+ experimental_attention_variant: dsv4_hybrid
+ csa_window_size: 128
+ csa_compress_ratios: ([0,0,4]+[128,4]*20+[0])
+ csa_compress_rotary_base: 40000
+ dsa_indexer_n_heads: 64
+ dsa_indexer_head_dim: 128
+ dsa_indexer_topk: 512
+ dsa_indexer_loss_coeff: 1e-2
+ dsa_indexer_use_sparse_loss: true
+ num_experts: 256
+ moe_n_hash_layers: 3
+ moe_ffn_hidden_size: 2048
+ moe_shared_expert_intermediate_size: 2048
+ moe_router_load_balancing_type: seq_aux_loss
+ moe_router_topk: 6
+ moe_aux_loss_coeff: 1e-4
+ moe_router_topk_scaling_factor: 1.5
+ moe_router_score_function: sqrtsoftplus
+ moe_router_enable_expert_bias: true
+ moe_router_bias_update_rate: 1e-3
+ activation_func_clamp_value: 10.0
+ enable_hyper_connections: true
+ num_residual_streams: 4
+ mhc_sinkhorn_iterations: 20
+ use_fused_mhc: true
+ mtp_num_layers: 1
+ mtp_loss_scaling_factor: 0.1
+ attention_dropout: 0.0
+ hidden_dropout: 0.0
+ mock_data: true
+ seq_length: 4096
+ moe_router_force_load_balancing: true
+ tensor_model_parallel_size: 1
+ pipeline_model_parallel_size: 1
+ expert_model_parallel_size: 64
+ context_parallel_size: 1
+ expert_tensor_parallel_size: 1
+ use_distributed_optimizer: true
+ sequence_parallel: true
+ overlap_grad_reduce: true
+ overlap_param_gather: true
+ moe_token_dispatcher_type: flex
+ moe_flex_dispatcher_backend: hybridep
+ moe_hybridep_num_sms: 32
+ moe_grouped_gemm: true
+ moe_permute_fusion: true
+ moe_router_fusion: true
+ moe_router_dtype: fp32
+ cuda_graph_impl: transformer_engine
+ cuda_graph_scope:
+ - attn
+ - moe_router
+ - moe_preprocess
+ te_rng_tracker: true
+ cuda_graph_warmup_steps: 1
+ offload_optimizer_states: true
+ fine_grained_activation_offloading: true
+ offload_modules:
+ - expert_fc1
+ delay_offload_until_cuda_graph: true
+ use_mcore_models: true
+ use_flash_attn: true
+ transformer_impl: transformer_engine
+ micro_batch_size: 2
+ global_batch_size: 2048
+ train_samples: 585937500
+ exit_duration_in_mins: 220
+ no_save_optim: true
+ no_check_for_nan_in_loss_and_grad: true
+ cross_entropy_loss_fusion: true
+ cross_entropy_fusion_impl: te
+ no_create_attention_mask_in_dataloader: true
+ manual_gc: true
+ manual_gc_interval: 10
+ lr: 3.9e-06
+ min_lr: 3.9e-07
+ lr_warmup_init: 3.9e-07
+ lr_decay_style: cosine
+ lr_decay_samples: 584765624
+ lr_warmup_samples: 1536000
+ weight_decay: 0.1
+ clip_grad: 1.0
+ adam_beta1: 0.9
+ adam_beta2: 0.95
+ bf16: true
+ fp8_recipe: mxfp8
+ fp8_format: e4m3
+ fp8_param_gather: true
+ reuse_grad_buf_for_mxfp8_param_ag: true
+ use_precision_aware_optimizer: true
+ main_grads_dtype: fp32
+ main_params_dtype: fp32
+ exp_avg_dtype: bf16
+ exp_avg_sq_dtype: bf16
+ moe_router_padding_for_quantization: true
+ init_method_std: 0.02
+ eval_iters: 32
+ eval_interval: 200
+ finetune: false
+ no_load_optim: true
+ no_load_rng: true
+ auto_detect_ckpt_format: true
+ load: ${LOAD_PATH}
+ save_interval: 500
+ dist_ckpt_strictness: log_all
+ log_throughput: true
+ log_interval: 1
+ logging_level: 20
+ log_timers_to_tensorboard: true
+ log_memory_to_tensorboard: true
+ log_validation_ppl_to_tensorboard: true
+ tensorboard_dir: ${OUTPUT_PATH}/tensorboard
+ wandb_exp_name: DeepSeek-V4-Flash-GB300-MXFP8-TP1PP1EP64-GBS2048SEQLEN4096
+ enable_experimental: true