[AMD] cap minimaxm3-fp8-mi355x-atom-disagg conc to 256; fix missing newline in models_atom.yaml

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: seungrokj

.github/configs/amd-master.yaml

@@ -2775,7 +2775,7 @@ minimaxm3-fp8-mi355x-atom-disagg:
       osl: 1024
       search-space:
       # 1P1D TP4
-      - conc-list: [ 1, 2, 4, 8, 16, 32, 64, 128, 256, 512 ]
+      - conc-list: [ 1, 2, 4, 8, 16, 32, 64, 128, 256 ]
         prefill:
           num-worker: 1
           tp: 4
@@ -2795,7 +2795,7 @@ minimaxm3-fp8-mi355x-atom-disagg:
       osl: 1024
       search-space:
       # 1P1D TP4
-      - conc-list: [ 1, 2, 4, 8, 16, 32, 64, 128, 256, 512 ]
+      - conc-list: [ 1, 2, 4, 8, 16, 32, 64, 128, 256 ]
         prefill:
           num-worker: 1
           tp: 4

benchmarks/multi_node/amd_utils/models_atom.yaml

@@ -37,4 +37,4 @@ MiniMax-M3-MXFP8:
   kv_cache_flags: "--kv_cache_dtype fp8"
   tp_dp_flags: "--enable-dp-attention"
   ep_dp_flags: "--enable-expert-parallel --enable-dp-attention"
-  mtp_flags: "--method eagle3 --draft-model Inferact/MiniMax-M3-EAGLE3 --num-speculative-tokens"
+  mtp_flags: "--method eagle3 --draft-model Inferact/MiniMax-M3-EAGLE3 --num-speculative-tokens"