v4.3 update. (#2709)

* v4.3 update.

* Update the cute_dsl_api changelog's doc link

* Update version to 4.3.0

* Update the example link

* Update doc to encourage user to install DSL from requirements.txt

---------

Co-authored-by: Larry Wu <larwu@nvidia.com>

examples/77_blackwell_fmha/kernel/sm100_fmha_mla_tma_warpspecialized.hpp

@@ -1039,10 +1039,6 @@ struct Sm100FmhaMlaKernelTmaWarpspecialized {
     auto pipeline_commit_state = pipeline_acquire_state;
     int pipeline_offset = 0;
 
-    for (int i = 0; i < StagesPV; i++) {
-      cutlass::arch::cp_async_fence();
-    }
-
     auto load_stage = [&](auto fn) {
       pipeline_load.producer_acquire(pipeline_acquire_state);
       fn(pipeline_acquire_state.index());
@@ -1132,6 +1128,13 @@ struct Sm100FmhaMlaKernelTmaWarpspecialized {
     pipeline_page_table.consumer_release(pipeline_pt_release_state);
     ++pipeline_pt_release_state;
 
+    // Extra async fence if the pipeline_offset can't meet the StagesPV
+    int extra_offset = 0;
+    while (pipeline_offset + extra_offset < StagesPV - 1) {
+      extra_offset++;
+      cutlass::arch::cp_async_fence();
+    }
+
     while (pipeline_offset > 0) {
       cutlass::arch::cp_async_fence();
     
@@ -2097,7 +2100,7 @@ struct Sm100FmhaMlaKernelTmaWarpspecialized {
       cutlass::arch::NamedBarrier(
           (kNumComputeWarps + kNumLoadWarps) * NumThreadsPerWarp,
           kNamedBarrierEpilogue
-      ).arrive();
+      ).arrive_and_wait();
 
       return;
     }