feat: add sm90 megamoe phase1 interfaces

megamoe_dev_test_scripts/phase1/interface_smoke.py

@@ -0,0 +1,110 @@
+import argparse
+import inspect
+import os
+import pathlib
+import sys
+from typing import Tuple
+
+import torch
+import torch.distributed as dist
+
+
+REPO_ROOT = pathlib.Path(__file__).resolve().parents[2]
+if str(REPO_ROOT) not in sys.path:
+    sys.path.insert(0, str(REPO_ROOT))
+
+import deep_gemm
+
+
+def init_test_dist(local_rank_arg: int = None) -> Tuple[int, int, dist.ProcessGroup]:
+    local_rank = local_rank_arg if local_rank_arg is not None else int(os.environ.get('LOCAL_RANK', '0'))
+    rank = int(os.environ.get('RANK', '0'))
+    world_size = int(os.environ.get('WORLD_SIZE', '1'))
+    master_addr = os.environ.get('MASTER_ADDR', '127.0.0.1')
+    master_port = int(os.environ.get('MASTER_PORT', '8361'))
+
+    torch.cuda.set_device(local_rank)
+    sig = inspect.signature(dist.init_process_group)
+    params = {
+        'backend': 'nccl',
+        'init_method': f'tcp://{master_addr}:{master_port}',
+        'world_size': world_size,
+        'rank': rank,
+    }
+    if 'device_id' in sig.parameters:
+        params['device_id'] = torch.device(f'cuda:{local_rank}')
+    dist.init_process_group(**params)
+    torch.set_default_device('cuda')
+    return rank, world_size, dist.new_group(list(range(world_size)))
+
+
+def make_weights(num_experts_per_rank: int, hidden: int, intermediate_hidden: int):
+    l1_weights = torch.randn(
+        (num_experts_per_rank, intermediate_hidden * 2, hidden),
+        dtype=torch.float32, device='cuda').to(torch.float8_e4m3fn)
+    l2_weights = torch.randn(
+        (num_experts_per_rank, hidden, intermediate_hidden),
+        dtype=torch.float32, device='cuda').to(torch.float8_e4m3fn)
+    l1_weights_sf = torch.ones(
+        (num_experts_per_rank, (intermediate_hidden * 2 + 127) // 128, hidden // 128),
+        dtype=torch.float32, device='cuda')
+    l2_weights_sf = torch.ones(
+        (num_experts_per_rank, (hidden + 127) // 128, intermediate_hidden // 128),
+        dtype=torch.float32, device='cuda')
+    return deep_gemm.transform_weights_for_mega_moe(
+        (l1_weights, l1_weights_sf), (l2_weights, l2_weights_sf))
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description='SM90 MegaMoE Phase 1 interface smoke')
+    parser.add_argument('--num-tokens', type=int, default=8)
+    parser.add_argument('--num-max-tokens-per-rank', type=int, default=384)
+    parser.add_argument('--hidden', type=int, default=512)
+    parser.add_argument('--intermediate-hidden', type=int, default=256)
+    parser.add_argument('--num-experts', type=int, default=16)
+    parser.add_argument('--num-topk', type=int, default=6)
+    parser.add_argument('--local-rank', type=int, default=None)
+    args = parser.parse_args()
+
+    local_rank = args.local_rank if args.local_rank is not None else int(os.environ.get('LOCAL_RANK', '0'))
+    rank_idx, num_ranks, group = init_test_dist(local_rank)
+    assert torch.cuda.get_device_capability(torch.cuda.current_device())[0] == 9
+    assert args.hidden % 128 == 0 and args.intermediate_hidden % 128 == 0
+    assert args.num_experts % num_ranks == 0
+
+    buffer = deep_gemm.get_symm_buffer_for_mega_moe(
+        group, args.num_experts,
+        args.num_max_tokens_per_rank, args.num_topk,
+        args.hidden, args.intermediate_hidden)
+    assert buffer.x.shape == (buffer.num_max_tokens_per_rank, args.hidden)
+    assert buffer.x_sf.shape == (buffer.num_max_tokens_per_rank, args.hidden // 128)
+    assert buffer.x_sf.dtype == torch.float32
+    assert buffer.l1_acts.shape[1] == args.hidden
+    assert buffer.l1_acts_sf.shape[1] == args.hidden // 128
+    assert buffer.l1_acts_sf.dtype == torch.float32
+    assert buffer.l2_acts.shape[1] == args.intermediate_hidden
+    assert buffer.l2_acts_sf.shape[1] == args.intermediate_hidden // 128
+    assert buffer.l2_acts_sf.dtype == torch.float32
+
+    num_tokens = args.num_tokens
+    buffer.x[:num_tokens].copy_(torch.randn((num_tokens, args.hidden), device='cuda').to(torch.float8_e4m3fn))
+    buffer.x_sf[:num_tokens].fill_(1.0)
+    buffer.topk_idx[:num_tokens].fill_(rank_idx * (args.num_experts // num_ranks))
+    buffer.topk_weights[:num_tokens].fill_(1.0)
+
+    weights = make_weights(args.num_experts // num_ranks, args.hidden, args.intermediate_hidden)
+    y = torch.empty((num_tokens, args.hidden), dtype=torch.bfloat16, device='cuda')
+    stats = torch.zeros((args.num_experts // num_ranks,), dtype=torch.int32, device='cuda')
+    deep_gemm.fp8_mega_moe(y, weights[0], weights[1], buffer,
+                           cumulative_local_expert_recv_stats=stats)
+    torch.cuda.synchronize()
+
+    dist.barrier(group=group)
+    buffer.destroy()
+    dist.destroy_process_group()
+    if rank_idx == 0:
+        print('[PASSED] SM90 MegaMoE Phase 1 interface smoke', flush=True)
+
+
+if __name__ == '__main__':
+    main()