[EXPERIMENTAL NOT READY] JIT GPU trace generation: record-to-APC column mapping

.github/actions/init-testing-instance-gpu/action.yml

@@ -27,11 +27,11 @@ runs:
       - name: Install Rust deps
         shell: bash
         run: rustup install nightly-2025-02-14 --component rust-src
-      - name: Install OpenVM guest toolchain (nightly-2025-08-02)
+      - name: Install OpenVM guest toolchain (nightly-2026-01-18)
         shell: bash
         run: |
-          rustup toolchain install nightly-2025-08-02
-          rustup component add rust-src --toolchain nightly-2025-08-02
+          rustup toolchain install nightly-2026-01-18
+          rustup component add rust-src --toolchain nightly-2026-01-18
       - uses: taiki-e/install-action@nextest
 
 

.github/actions/init-testing-instance/action.yml

@@ -26,9 +26,9 @@ runs:
       - name: Install Rust deps
         shell: bash
         run: rustup install nightly-2025-02-14 --component rust-src
-      - name: Install OpenVM guest toolchain (nightly-2025-08-02)
+      - name: Install OpenVM guest toolchain (nightly-2026-01-18)
         shell: bash
         run: |
-          rustup toolchain install nightly-2025-08-02
-          rustup component add rust-src --toolchain nightly-2025-08-02
+          rustup toolchain install nightly-2026-01-18
+          rustup component add rust-src --toolchain nightly-2026-01-18
       - uses: taiki-e/install-action@nextest

.github/workflows/build-cache.yml

@@ -26,18 +26,18 @@ jobs:
       run: rustup toolchain install nightly-2025-10-01 --component clippy,rustfmt
     - name: Install Rust toolchain
       run: rustup toolchain install nightly-2025-02-14 --component rust-src
-    - name: Install Rust toolchain 1.91 (stable)
-      run: rustup toolchain install 1.91
+    - name: Install Rust toolchain 1.91.1 (stable, OpenVM v2 MSRV)
+      run: rustup toolchain install 1.91.1
     - name: Set cargo to perform shallow clones
       run: echo "CARGO_NET_GIT_FETCH_WITH_CLI=true" >> $GITHUB_ENV
     - name: Format
       run: cargo fmt --all --check --verbose
-    - name: Cargo check with Rust 1.91 (default features)
-      run: cargo +1.91 check --all-targets
+    - name: Cargo check with Rust 1.91.1 (default features)
+      run: cargo +1.91.1 check --all-targets
     - name: Lint no default features
       run: cargo clippy --all --all-targets --no-default-features --profile pr-tests --verbose -- -D warnings
     - name: Build
-      run: cargo build --all-targets --features metrics --all --profile pr-tests --verbose
+      run: cargo build --all-targets --features metrics,aot --all --profile pr-tests --verbose
     ###############################################################################
 
     - name: Delete the old cache

.github/workflows/nightly-tests.yml

@@ -36,8 +36,8 @@ jobs:
           key: ${{ runner.os }}-cargo-pr-tests
       - name: Install Rust toolchain nightly-2025-10-01 (with clippy and rustfmt)
         run: rustup toolchain install nightly-2025-10-01 --component clippy,rustfmt,rust-src
-      - name: Install Rust toolchain 1.91
-        run: rustup toolchain install 1.91
+      - name: Install Rust toolchain 1.91.1
+        run: rustup toolchain install 1.91.1
       - name: Install riscv target
         run: rustup target add riscv32imac-unknown-none-elf --toolchain nightly-2025-10-01
       - name: Install test dependencies
@@ -78,10 +78,10 @@ jobs:
         run: cargo build --release -p powdr-openvm
 
       - name: Install cargo openvm
-        # Rust 1.91 is needed by fresher versions of dependencies of cargo-openvm.
+        # Rust 1.91.1 is needed by fresher versions of dependencies of cargo-openvm.
         run: |
-          rustup toolchain install 1.91
-          cargo +1.91 install --git 'http://github.com/powdr-labs/openvm.git' --rev "v1.4.2-powdr-rc.4" --locked cargo-openvm
+          rustup toolchain install 1.91.1
+          cargo +1.91.1 install --git 'http://github.com/powdr-labs/openvm.git' --rev "v1.4.2-powdr-rc.4" --locked cargo-openvm
 
       - name: Setup python venv
         run: |
@@ -213,10 +213,10 @@ jobs:
           key: ${{ runner.os }}-cargo-release-apc-gpu-${{ hashFiles('**/Cargo.toml') }}
 
       - name: Install cargo openvm
-        # Rust 1.91 is needed by fresher versions of dependencies of cargo-openvm.
+        # Rust 1.91.1 is needed by fresher versions of dependencies of cargo-openvm.
         run: |
-          rustup toolchain install 1.91
-          cargo +1.91 install --git 'http://github.com/powdr-labs/openvm.git' --rev "v1.4.2-powdr-rc.4" --locked cargo-openvm
+          rustup toolchain install 1.91.1
+          cargo +1.91.1 install --git 'http://github.com/powdr-labs/openvm.git' --rev "v1.4.2-powdr-rc.4" --locked cargo-openvm
 
       - name: Setup python venv
         run: |

.github/workflows/post-merge-tests.yml

@@ -37,10 +37,10 @@ jobs:
         run: cargo build --release -p powdr-openvm
 
       - name: Install cargo openvm
-        # Rust 1.91 is needed by fresher versions of dependencies of cargo-openvm.
+        # Rust 1.91.1 is needed by fresher versions of dependencies of cargo-openvm.
         run: |
-          rustup toolchain install 1.91
-          cargo +1.91 install --git 'http://github.com/powdr-labs/openvm.git' --rev "v1.4.2-powdr-rc.4" --locked cargo-openvm
+          rustup toolchain install 1.91.1
+          cargo +1.91.1 install --git 'http://github.com/powdr-labs/openvm.git' --rev "v1.4.2-powdr-rc.4" --locked cargo-openvm
 
       - name: Run keccak with 100 APCs
         run: /usr/bin/time -v cargo run --bin powdr_openvm_riscv -r prove guest-keccak --input 10000 --autoprecompiles 100 --recursion

.github/workflows/pr-tests-with-secrets.yml

@@ -50,10 +50,10 @@ jobs:
         run: cargo build --release -p powdr-openvm
 
       - name: Install cargo openvm
-        # Rust 1.91 is needed by fresher versions of dependencies of cargo-openvm.
+        # Rust 1.91.1 is needed by fresher versions of dependencies of cargo-openvm.
         run: |
-          rustup toolchain install 1.91
-          cargo +1.91 install --git 'http://github.com/powdr-labs/openvm.git' --rev "v1.4.2-powdr-rc.4" --locked cargo-openvm
+          rustup toolchain install 1.91.1
+          cargo +1.91.1 install --git 'http://github.com/powdr-labs/openvm.git' --rev "v1.4.2-powdr-rc.4" --locked cargo-openvm
 
       - name: Patch benchmark
         uses: ./.github/actions/patch-openvm-reth-benchmark
@@ -106,10 +106,10 @@ jobs:
         run: cargo build --release -p powdr-openvm
 
       - name: Install cargo openvm
-        # Rust 1.91 is needed by fresher versions of dependencies of cargo-openvm.
+        # Rust 1.91.1 is needed by fresher versions of dependencies of cargo-openvm.
         run: |
-          rustup toolchain install 1.91
-          cargo +1.91 install --git 'http://github.com/powdr-labs/openvm.git' --rev "v1.4.2-powdr-rc.4" --locked cargo-openvm
+          rustup toolchain install 1.91.1
+          cargo +1.91.1 install --git 'http://github.com/powdr-labs/openvm.git' --rev "v1.4.2-powdr-rc.4" --locked cargo-openvm
 
       - name: Setup python venv
         run: |

.github/workflows/pr-tests.yml

@@ -47,18 +47,18 @@ jobs:
       ##### The block below is shared between cache build and PR build workflows #####
       - name: Install Rust toolchain nightly-2025-10-01 (with clippy and rustfmt)
         run: rustup toolchain install nightly-2025-10-01 --component clippy,rustfmt
-      - name: Install Rust toolchain 1.91 (stable)
-        run: rustup toolchain install 1.91
+      - name: Install Rust toolchain 1.91.1 (stable)
+        run: rustup toolchain install 1.91.1
       - name: Set cargo to perform shallow clones
         run: echo "CARGO_NET_GIT_FETCH_WITH_CLI=true" >> $GITHUB_ENV
       - name: Format
         run: cargo fmt --all --check --verbose
-      - name: Cargo check with Rust 1.91 (default features)
-        run: cargo +1.91 check --all-targets
+      - name: Cargo check with Rust 1.91.1 (default features)
+        run: cargo +1.91.1 check --all-targets
       - name: Lint no default features
-        run: cargo clippy --all --all-targets --features metrics --profile pr-tests --verbose -- -D warnings
+        run: cargo clippy --all --all-targets --features metrics,aot --profile pr-tests --verbose -- -D warnings
       - name: Build (CPU)
-        run: cargo build --all-targets --features metrics --all --profile pr-tests --verbose
+        run: cargo build --all-targets --features metrics,aot --all --profile pr-tests --verbose
       ###############################################################################
 
       - uses: taiki-e/install-action@nextest
@@ -161,14 +161,14 @@ jobs:
 
       - name: Install Rust toolchain nightly-2025-10-01 (with clippy and rustfmt)
         run: rustup toolchain install nightly-2025-10-01 --component clippy,rustfmt
-      - name: Install Rust toolchain 1.91 (stable)
-        run: rustup toolchain install 1.91
+      - name: Install Rust toolchain 1.91.1 (stable)
+        run: rustup toolchain install 1.91.1
       - name: Set cargo to perform shallow clones
         run: echo "CARGO_NET_GIT_FETCH_WITH_CLI=true" >> $GITHUB_ENV
       - name: Format
         run: cargo fmt --all --check --verbose
-      - name: Cargo check with Rust 1.91 (all features)
-        run: cargo +1.91 check --all-targets
+      - name: Cargo check with Rust 1.91.1 (all features)
+        run: cargo +1.91.1 check --all-targets
       - name: Lint no default features
         run: cargo clippy --all --all-targets --features cuda,metrics,aot --profile pr-tests --verbose -- -D warnings
       - name: Build (GPU)
@@ -207,7 +207,10 @@ jobs:
       - name: Init testing instance (GPU)
         uses: ./.github/actions/init-testing-instance-gpu
       - name: Run quick GPU tests from powdr-openvm-riscv only
-        run: cargo nextest run --archive-file tests_gpu.tar.zst --workspace-remap . --verbose --no-tests=warn
+        # Cap parallelism so concurrent GPU allocations fit in ~20 GiB of device
+        # memory on our shared runner. Heavy APC tests can each consume several
+        # GiB, so we run at most 4 at a time.
+        run: cargo nextest run --archive-file tests_gpu.tar.zst --workspace-remap . --verbose --no-tests=warn --test-threads=4
         # run: cargo nextest run --archive-file tests_gpu.tar.zst --workspace-remap . --verbose --partition count:"${{ matrix.test }}"/7 --no-tests=warn
 
   # NOTE: test_apc_reth_app_proof has been moved to pr-tests-with-secrets.yml