Update H200 ultra-tier settings

code/train_sft.py

@@ -169,8 +169,8 @@ def auto_profile_hardware():
     # Tier Classification for 2048 Context Length (Target Effective Batch = 128)
     if vram_gb >= 75:  # H200 (141GB), H100 (80GB), GH200, A100-80GB
         tier = "Ultra-Tier"
-        micro_batch = 8
-        grad_accum = 16
+        micro_batch = 16
+        grad_accum = 8
         desc = "NVIDIA Hopper / Datacenter Beast (141GB / 80GB HBM3e)"
     elif vram_gb >= 30:  # RTX 5090 (32GB), A100 (40GB), A6000 (48GB), RTX 6000 Ada
         tier = "High-Tier"