chore: nightly sync main into dev (13_08_2026)

.github/actions/action.yml

@@ -77,7 +77,7 @@ runs:
       run: echo "node_name=$NODE_NAME" | tee -a "$GITHUB_OUTPUT"
 
     - name: Checkout repository
-      uses: actions/checkout@v6
+      uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
       with:
         ref: ${{ inputs.sha }}
 
@@ -94,7 +94,7 @@ runs:
         sudo chown -R $(whoami) /home/runner/ 2>/dev/null || true
 
     - name: Setup python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
       with:
         python-version: '3.12'
 
@@ -296,7 +296,7 @@ runs:
         fi
 
     - name: Upload coverage
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
       if: ${{ always() && steps.check.outputs.coverage_report != 'none' }}
       with:
         name: ${{ steps.check.outputs.coverage_report }}
@@ -307,7 +307,7 @@ runs:
 
     - name: Upload logs
       id: upload-logs
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
       if: always()
       continue-on-error: true
       with:
@@ -321,7 +321,7 @@ runs:
       run: sleep 10
 
     - name: Retry log upload
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
       if: ${{ always() && steps.upload-logs.outcome == 'failure' }}
       with:
         name: ${{ steps.check.outputs.logs_report }}-retry

.github/copy-pr-bot.yaml

@@ -1,4 +1,4 @@
 enabled: true
 auto_sync_draft: false
 auto_sync_ready: true
-trustees_override: ["AAnoosheh", "ArEsKay3", "Autumn1998", "BestJuly", "BoxiangW", "CarlosGomes98", "ChenhanYu", "Connor-XY", "FDecaYed", "HaochenYuan", "HollowMan6", "ISEEKYAN", "JRD971000", "Leili", "Mellonta", "Phlip79", "QiZhangNV", "RPrenger", "ShriyaRishab", "Victarry", "WanZzzzzz", "Wohox", "YangFei1990", "ZhiyuLi-Nvidia", "adistomar", "ahmadki", "aklife97", "alokpathy", "ananthsub", "anlthms", "aroshanghias-nvd", "ashehper", "asolergi-nv", "athitten", "balasaajay", "buptzyb", "chtruong814", "cjld", "cspades", "cuichenx", "deepakn94", "desh2608", "dimapihtar", "dingqingy-nv", "duncanriach", "erhoo82", "ericharper", "fanshiqing", "faradawn", "fitsumreda", "freewym", "frsun-nvda", "gautham-kollu", "gdengk", "goelarushi", "guihong-nv", "guyueh1", "hexinw-nvidia", "huvunvidia", "hxbai", "ilml", "jalbericiola", "janEbert", "jaredcasper", "jenchen13", "jiaji-huang", "jiemingz", "jingqiny-99", "jkamalu", "jon-barker", "jstjohn", "kajalj22", "kamran-nvidia", "kevalmorabia97", "kingformatty", "ko3n1g", "ksivaman", "kunlunl", "kvareddy", "kwyss-nvidia", "lauradang", "layalir", "lhb8125", "liding-nv", "lmcafee-nvidia", "maanug-nv", "macandro96", "mathemakitten", "matthieule", "mchrzanowski", "mehraakash", "minitu", "mkhona-nvidia", "nanz-nv", "ntajbakhsh", "parthmannan", "philipcmonk", "prajwal1210", "pthombre", "rapatel", "rhewett-nv", "rogerwaleffe", "sajadn", "sanandaraj5597", "sancha", "santhnm2", "sbak5", "shanmugamr1992", "sharathts", "sheliang-nv", "shengf-nv", "shifangx", "shjwudp", "sidsingh-nvidia", "skyw", "sraman-rgb", "sudhakarsingh27", "svcnemo-autobot", "tdene", "theothermike", "thomasdhc", "tomlifu", "trintamaki", "tylerpoon", "wdykas", "wplf", "wujingyue", "xiaoyao0115", "xuantengh", "xuwchen", "yaox12", "yaoyu-33", "yashaswikarnati", "yeyu-nvidia", "yobibyte", "youngeunkwon0405", "yqwangustc", "yueshen2016", "yuzhongw-nvidia", "zhehuaichen", "zhongbozhu"]
+trustees_override: ["AAnoosheh", "ArEsKay3", "Autumn1998", "BestJuly", "BoxiangW", "CarlosGomes98", "ChenhanYu", "Connor-XY", "DanialTaheri", "FDecaYed", "HaochenYuan", "HollowMan6", "ISEEKYAN", "JF-D", "JRD971000", "Leili", "Mellonta", "Phlip79", "QiZhangNV", "RPrenger", "ShriyaRishab", "Victarry", "WanZzzzzz", "Wohox", "YangFei1990", "ZhiyuLi-Nvidia", "adistomar", "ahmadki", "aklife97", "alokpathy", "ananthsub", "anlthms", "aroshanghias-nvd", "ashehper", "asolergi-nv", "athitten", "balasaajay", "buptzyb", "chtruong814", "cjld", "cspades", "cuichenx", "deepakn94", "desh2608", "dimapihtar", "dingqingy-nv", "duncanriach", "ehosseiniasl", "erhoo82", "ericharper", "fanshiqing", "faradawn", "fitsumreda", "freewym", "frsun-nvda", "gautham-kollu", "gdengk", "goelarushi", "guihong-nv", "guyueh1", "hexinw-nvidia", "huvunvidia", "hxbai", "ilml", "jalbericiola", "janEbert", "jaredcasper", "jenchen13", "jiaji-huang", "jiemingz", "jingqiny-99", "jkamalu", "jon-barker", "jstjohn", "kajalj22", "kamran-nvidia", "kevalmorabia97", "kevjshih", "kingformatty", "ko3n1g", "ksivaman", "kunlunl", "kvareddy", "kwyss-nvidia", "lauradang", "layalir", "lhb8125", "liding-nv", "lmcafee-nvidia", "maanug-nv", "macandro96", "mathemakitten", "matthieule", "mchrzanowski", "mehraakash", "minitu", "mkhona-nvidia", "nanz-nv", "niyunsheng", "ntajbakhsh", "nvcsathe", "parthmannan", "philipcmonk", "prajwal1210", "pthombre", "rapatel", "rhewett-nv", "rogerwaleffe", "sajadn", "sanandaraj5597", "sancha", "santhnm2", "sbak5", "shanmugamr1992", "sharathts", "sheliang-nv", "shengf-nv", "shifangx", "shjwudp", "sidsingh-nvidia", "skyw", "sraman-rgb", "sudhakarsingh27", "svcnemo-autobot", "svcnvidia-nemo-ci", "tdene", "theothermike", "thomasdhc", "tomlifu", "trintamaki", "tylerpoon", "vasunvidia", "wdykas", "wplf", "wujingyue", "xiaoyao0115", "xuantengh", "xuwchen", "yaox12", "yaoyu-33", "yashaswikarnati", "yeyu-nvidia", "yobibyte", "youngeunkwon0405", "yqwangustc", "yueshen2016", "yuzhongw-nvidia", "zhehuaichen", "zhongbozhu"]

.github/oncall_schedule.json

@@ -1,24 +1,4 @@
 [
-    {
-        "user": "cspades",
-        "date": "2026-07-08"
-    },
-    {
-        "user": "dimapihtar",
-        "date": "2026-07-15"
-    },
-    {
-        "user": "guihong-nv",
-        "date": "2026-07-22"
-    },
-    {
-        "user": "ilml",
-        "date": "2026-07-29"
-    },
-    {
-        "user": "janEbert",
-        "date": "2026-08-05"
-    },
     {
         "user": "maanug-nv",
         "date": "2026-08-12"
@@ -46,5 +26,25 @@
     {
         "user": "cspades",
         "date": "2026-09-23"
+    },
+    {
+        "user": "dimapihtar",
+        "date": "2026-09-30"
+    },
+    {
+        "user": "guihong-nv",
+        "date": "2026-10-07"
+    },
+    {
+        "user": "ilml",
+        "date": "2026-10-14"
+    },
+    {
+        "user": "janEbert",
+        "date": "2026-10-21"
+    },
+    {
+        "user": "maanug-nv",
+        "date": "2026-10-28"
     }
 ]

.github/scripts/test_cache_keys.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+compute_keys() {
+  local base_ref=$1
+  local cache_variant=$2
+  local pr_number=$3
+  local merge_group_head_ref=$4
+  local github_ref=$5
+  local event_name=$6
+  local ref_name=$7
+
+  BASE_REF="${base_ref#refs/heads/}"
+  CACHE_VARIANT=$cache_variant
+  CACHE_NAMESPACE=$(printf '%s' "$BASE_REF" | tr '/:@' '-' | tr -cd '[:alnum:]_.-')
+  if [ -z "$CACHE_NAMESPACE" ]; then
+    return 1
+  fi
+
+  PR_NUMBER=$pr_number
+  if [ "$PR_NUMBER" = "0" ] && [ -n "$merge_group_head_ref" ]; then
+    PR_NUMBER=$(printf '%s' "$merge_group_head_ref" | sed -nE 's#.*pr-([0-9]+)-.*#\1#p')
+  fi
+
+  BASELINE_KEY="${CACHE_NAMESPACE}-${CACHE_VARIANT}-baseline"
+  if [ -n "$PR_NUMBER" ] && [ "$PR_NUMBER" != "0" ]; then
+    KEY="${CACHE_NAMESPACE}-${CACHE_VARIANT}-${PR_NUMBER}"
+  elif [ "$github_ref" = "refs/heads/$BASE_REF" ] || [ "$event_name" = "schedule" ]; then
+    KEY="$BASELINE_KEY"
+  else
+    BRANCH_NAMESPACE=$(printf '%s' "$ref_name" | tr '/:@' '-' | tr -cd '[:alnum:]_.-')
+    KEY="${CACHE_NAMESPACE}-${CACHE_VARIANT}-${BRANCH_NAMESPACE}"
+  fi
+
+  if [ "${#KEY}" -gt 100 ]; then
+    KEY="${KEY:0:83}-$(printf '%s' "$KEY" | sha256sum | cut -c1-16)"
+  fi
+  if [ "${#BASELINE_KEY}" -gt 100 ]; then
+    BASELINE_KEY="${BASELINE_KEY:0:83}-$(printf '%s' "$BASELINE_KEY" | sha256sum | cut -c1-16)"
+  fi
+}
+
+assert_keys() {
+  local expected_key=$1
+  local expected_baseline=$2
+  shift 2
+  compute_keys "$@"
+  test "$KEY" = "$expected_key"
+  test "$BASELINE_KEY" = "$expected_baseline"
+}
+
+assert_keys main-dev-6077 main-dev-baseline refs/heads/main dev 0 pr-6077-ff6b refs/heads/gh-readonly-queue/main/pr-6077 merge_group gh-readonly-queue/main/pr-6077
+assert_keys dev-dev-6072 dev-dev-baseline refs/heads/dev dev 0 pr-6072-95e4 refs/heads/gh-readonly-queue/dev/pr-6072 merge_group gh-readonly-queue/dev/pr-6072
+assert_keys main-lts-6159 main-lts-baseline main lts 6159 '' refs/heads/pull-request/6159 push pull-request/6159
+assert_keys main-dev-baseline main-dev-baseline main dev 0 '' refs/heads/main schedule main
+assert_keys main-dev-deploy-release-1.2 main-dev-baseline main dev 0 '' refs/heads/deploy-release/1.2 push deploy-release/1.2

.github/workflows/_build_test_publish_wheel.yml

@@ -43,7 +43,7 @@ jobs:
       PUBLISH_DRYRUN: ${{ inputs.dry-run }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
         with:
           ref: ${{ inputs.ref }}
 
@@ -141,7 +141,7 @@ jobs:
           "
 
       - name: Upload wheels
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
         with:
           name: wheels-${{ matrix.PACKAGE }}-${{ matrix.PLATFORM }}-${{ inputs.dry-run && 'dry-run' || 'release' }}
           path: dist/
@@ -165,7 +165,7 @@ jobs:
       PACKAGE: ${{ matrix.PACKAGE }}
     steps:
       - name: Download wheels
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7
         with:
           name: wheels-${{ matrix.PACKAGE }}-${{ matrix.PLATFORM }}-${{ inputs.dry-run && 'dry-run' || 'release' }}
           path: dist/

.github/workflows/_update_dependencies.yml

@@ -33,7 +33,7 @@ jobs:
       TARGET_BRANCH: ${{ inputs.target-branch }}
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
         with:
           ref: ${{ env.TARGET_BRANCH }}
 
@@ -60,7 +60,7 @@ jobs:
           fi
 
       - name: Checkout repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
         with:
           ref: ${{ env.SOURCE_BRANCH }}
 
@@ -77,7 +77,7 @@ jobs:
           bash -c 'uv lock --upgrade'
 
       - name: Upload lock file
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
         with:
           name: lock-file-${{ env.SOURCE_BRANCH }}
           path: uv.lock
@@ -90,7 +90,7 @@ jobs:
       TARGET_BRANCH: ${{ inputs.target-branch }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
         with:
           token: ${{ secrets.PAT }}
           ref: ${{ env.TARGET_BRANCH }}
@@ -103,12 +103,12 @@ jobs:
           fi
 
       - name: Download lock file
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7
         with:
           name: lock-file-${{ env.SOURCE_BRANCH }}
 
       - name: Create Bump PR
-        uses: peter-evans/create-pull-request@v8
+        uses: peter-evans/create-pull-request@5f6978faf089d4d20b00c7766989d076bb2fc7f1 # v8
         id: create-pull-request
         env:
           title: "chore(beep boop 🤖): Bump `uv.lock` (${{ inputs.target-branch}}) (${{ needs.pre-flight.outputs.date }})"

.github/workflows/auto-assign-milestone.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Get PR info
         id: get-pr-info
         if: startsWith(github.ref, 'refs/heads/pull-request/')
-        uses: nv-gha-runners/get-pr-info@main
+        uses: nv-gha-runners/get-pr-info@090577647b8ddc4e06e809e264f7881650ecdccf # main
 
       - name: Check if PR has milestone
         id: check_milestone

.github/workflows/auto-reminder-bot.yml

@@ -14,10 +14,10 @@ jobs:
     if: github.repository == 'NVIDIA/Megatron-LM'
     steps:
       - name: Check out repository code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6
         with:
           python-version: "3.10"
 

.github/workflows/auto-swap-labels.yml

@@ -32,7 +32,7 @@ jobs:
         id: get-pr
         if: github.event_name == 'workflow_run'
         continue-on-error: true
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7
         with:
           name: pr-number
           path: pr-number
@@ -54,11 +54,11 @@ jobs:
 
       - name: Check out repository code
         if: steps.pr.outputs.number
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
 
       - name: Set up Python
         if: steps.pr.outputs.number
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6
         with:
           python-version: "3.10"
 

.github/workflows/auto-update-copy-pr-bot.yml

@@ -11,7 +11,7 @@ jobs:
     if: github.repository == 'NVIDIA/Megatron-LM'
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
         with:
           token: ${{ secrets.PAT }}
           ref: main

.github/workflows/cherry-pick-release-commit.yml

@@ -20,7 +20,7 @@ on:
 
 jobs:
   cherry-pick:
-    uses: NVIDIA-NeMo/FW-CI-templates/.github/workflows/_cherry_pick.yml@v0.65.9
+    uses: NVIDIA-NeMo/FW-CI-templates/.github/workflows/_cherry_pick.yml@0cb71cd98aa47ba338d8e38514387d5ceecfedff # v0.65.9
     if: github.repository == 'NVIDIA/Megatron-LM'
     with:
       target-branches-pattern: 'core_(*dev_)?r[0-9]+\.[0-9]+\.[0-9]+'

.github/workflows/cicd-approve-test-queue.yml

@@ -38,10 +38,10 @@ jobs:
             contributor_type: external
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6
         with:
           python-version: "3.12"