diff --git a/.github/configs/amd-master.yaml b/.github/configs/amd-master.yaml
index 7e4918e09..57e903738 100644
--- a/.github/configs/amd-master.yaml
+++ b/.github/configs/amd-master.yaml
@@ -2135,7 +2135,6 @@ dsr1-fp4-mi355x-sglang-disagg-8k1k-mtp:
           - "DECODE_NODES=1"
           - "DECODE_MTP_SIZE=1"
 
-
 dsv4-fp4-mi355x-sglang:
   image: lmsysorg/sglang-rocm:v0.5.13-rocm720-mi35x-20260612
   model: deepseek-ai/DeepSeek-V4-Pro
@@ -2150,12 +2149,15 @@ dsv4-fp4-mi355x-sglang:
       osl: 1024
       search-space:
       - { tp: 8, dp-attn: true, conc-start: 64, conc-end: 2048 }
-      - { tp: 8, dp-attn: false, conc-start: 1 , conc-end: 32 }
+      - { tp: 4, dp-attn: true, conc-start: 16, conc-end: 128 }
+      - { tp: 4, dp-attn: false, conc-start: 1 , conc-end: 32 }
     - isl: 8192
       osl: 1024
       search-space:
       - { tp: 8, dp-attn: true, conc-start: 64, conc-end: 2048 }
-      - { tp: 8, dp-attn: false, conc-start: 1, conc-end: 32 }
+      - { tp: 4, dp-attn: true, conc-start: 16, conc-end: 128 }
+      - { tp: 4, dp-attn: false, conc-start: 1, conc-end: 32 }
+
 
 # MTP variant of dsv4-fp4-mi355x-sglang. Mirrors the base search space and adds
 # spec-decoding: mtp, which routes to dsv4_fp4_mi355x_sglang_mtp.sh (EAGLE
diff --git a/perf-changelog.yaml b/perf-changelog.yaml
index 784e1844b..43f06f4f1 100644
--- a/perf-changelog.yaml
+++ b/perf-changelog.yaml
@@ -3831,6 +3831,13 @@
     - "Extend MiniMax-M3 MXFP8 H100/H200 non-MTP sweeps to concurrency 1 on the latency rows (H100: TP8; H200: TP4 and TP8) and add full TEP coverage from conc 1 to 256 (H100: TP8+EP8; H200: TP4+EP4 and TP8+EP8, incl. a new TP4+EP4 row for 8k1k). H200 TP8+EP8 upper bound moves 512->256 (high concurrency stays covered by the TP8+EP8 dp-attn DEP rows). DEP rows unchanged"
   pr-link: https://github.com/SemiAnalysisAI/InferenceX/pull/1761
 
+- config-keys:
+    - dsv4-fp4-mi355x-sglang
+  description:
+    - "Switch fixed-seq-len search space from TP8 to TP4 for both isl=1024 and isl=8192 scenarios"
+    - "Expand isl=8192 coverage: add TP4 dp-attn sweep (conc 32–2048) and TP4 TP-only sweep (conc 1–32)"
+  pr-link: https://github.com/SemiAnalysisAI/InferenceX/pull/1762
+  
 - config-keys:
     - dsv4-fp4-gb300-dynamo-trt
     - dsv4-fp4-gb300-dynamo-trt-mtp