Release Notes

Release Notes

Compute Sanitizer Release Notes.

Release notes and known issues.

Release Notes

Updates in 2024.3

  • Fixed potential invalid results on Ampere with synccheck and racecheck relating to cuda::barrier. cuda::barrier wait events are now called after the wait as completed in the same fashion as Hopper. This may require target applications to be recompiled with a CUDA 12.4 or more recent compiler.

  • Fixed multiple issues with coredump generation that resulted in failures or hangs.

  • Fixed potential false positives in memcheck with the PTX instruction st.async on the barrier address.

  • Fixed a potential hang when using per-thread default streams or green contexts and synchronous cudaMemcpy from device to host.

  • Fixed potential issues with host backtraces on Windows.

  • Fixed potential false positives misaligned accesses in memcheck with the PTX instruction cp.async.bulk.

Updates in 2024.2

  • Added public API and memcheck support for PTX cp.async.bulk operations from global to shared memory on Hopper.

  • Added support for OptiX 8.1.

  • Dropped support for Linux ppc64le: this platform is no longer supported.

  • Fixed an issue where memcheck would report misaligned or out of bounds false positives with accesses of a larger size than the actual operation in specific cases.

  • Fixed potential issues when using Heterogeneous Memory Management.

  • Fixed potential crashes or false results in racecheck when using clusters on Hopper.

  • Added a warning when clearing unsupported coredump-related environment variables.

  • Clarified in documentation when leak errors are reported.

Updates in 2024.1.1

  • Fixed an issue where errors would not be reported in libraries called from .NET applications.

Updates in 2024.1

  • Enable shared addressing support by default: removed option --hmm-support and replaced it with environment variable NV_COMPUTE_SANITIZER_SHARED_ADDRESSING_SUPPORT. See the environment variables documentation for more information.

  • Changed default value for option --target-processes to all.

  • Added detection for cuda::barrier initialization race conditions in racecheck on Hopper.

  • Added support for initcheck API errors suppression.

  • Added memcheck support for cuMemPoolImportPointer.

  • Added support for CUDA green contexts.

  • Added support for CUDA graph device-side node update.

  • Fixed potential false positives with synccheck when using different cuda::barrier in a single warp.

  • Fixed potential false negatives with memcheck when using floating point atomics on Hopper.

Updates in 2023.1.1

  • Fixed error output for WGMMA instructions.

Updates in 2023.3

  • Added support for Heterogeneous Memory Management (HMM) and Address Translation Service (ATS). The feature is opt-in using the --hmm-support command-line option.

  • Added racecheck support for device graph launches.

  • Added the ability to suppress known issues using the --suppressions command-line option. See the suppressions documentation for more information.

  • Added support for external memory objects. This effectively adds support for Vulkan and D3D12 interop.

  • Added device backtrace support for WSL.

  • Improve PC offset output. It is now printed next to the function name to clarify it is an assembly offset within that function.

  • Several command-line options no longer require to explicitly specify “yes” or “no” when they are used.

  • Renamed the options --kernel-regex and --kernel-regex-exclude to --kernel-name and --kernel-name-exclude.

  • Added the regex filtering key to --kernel-name and --kernel-name-exclude.

  • Added new command-line option --racecheck-indirect-barrier-dependency to enable indirect cuda::barrier tracking in racecheck.

  • Added new command-line option --coredump-behavior to control the target application behavior after generating a GPU coredump.

  • Added new command-line option --detect-missing-module-unload to detect missing calls to the cuModuleUnload driver API.

  • Added new command-line option --preload-library to make the target application load a shared library before the injection libraries.

  • Fix initcheck false positive when memory loads are widened and include padding bytes.

  • Fix potential hang in racecheck and synccheck tools when the bar.arrive instruction is used.

  • Added patching API support for the setsmemsize instruction.

  • Added patching API support for __syncthreads() after the barrier is released.

Updates in 2023.2.2

  • Updated version print output to include build and config information.

  • Fix potential hang on QNX when capturing the host backtrace.

Updates in 2023.2.1

  • Fixed potential racecheck hang on H100 when using thread block clusters.

  • Compute Sanitizer 2023.2.1 is incorrectly versioned as 2023.2.0 and need to be differentiated by its build ID 33053471.

Updates in 2023.2

  • Added support for CUDA device graph launches.

  • Added racecheck support for cluster entry and exit race detection for remote shared memory accesses. See the cluster entry and exit race detection documentation for more information.

  • Added support for CUDA lazy loading when device heap checking is enabled. Requires CUDA driver version 535 or newer.

  • Added support for tracking child processes launched with system() or posix_spawn(p) when using --target-processes all.

  • Added support for st.async and red.async instructions.

  • Improved support for partial warp synchronization using cooperative groups in racecheck.

  • Improved support for cuda::barrier::wait() on SM 9.x.

  • Added coredump support for Pascal architecture and multi-context applications.

  • Added support for OptiX 8.0.

  • Improved performance when using initcheck in OptiX applications in some cases. Using initcheck to track OptiX applications now requires the option --check-optix yes.

Updates in 2023.1.1

  • Fixed bug where memcheck would report out-of-bound accesses when loading user parameter values using a ternary operator.

  • Fixed potential crash when using leakcheck with applications using CUBLAS.

  • Fixed potential false positives when using synccheck or racecheck with applications using CUDA barriers.

Updates in 2023.1

  • Added racecheck support for distributed shared memory.

  • Extended stream-ordered race detection to cudaMemcpy APIs.

  • Added memcheck, synccheck and patching API support for warpgroup operations.

  • Added --coredump-name CLI option to set the coredump file name.

  • Added support for Unicode file paths.

  • Added support for OptiX 7.7.

Updates in 2022.4.1

  • Fixed bug where synccheck would incorrectly report illegal instructions for code using cluster.sync() and compiled with --device-debug

  • Fixed incorrect address reports in SanitizerCallbackMemcpyAsync in some specific cases, leading to potential invalid results in memcheck and racecheck.

  • Fixed potential hangs and invalid results with racecheck on OptiX applications.

  • Fixed potential crash or invalid results when using CUDA Lazy Module Loading with memcheck or initcheck if --check-device-heap is enabled. Lazy Module Loading will be automatically disabled in these cases.

Updates in 2022.4

  • Added support for __nv_aligned_device_malloc.

  • Added support for ldmatrix and stmatrix instructions.

  • Added support for cache control operations when using the --check-cache-control command-line option.

  • Added new command-line option --unused-memory-threshold to control the threshold for unused memory reports.

  • Improved support for CUDA pipeline memcpy-async related hazards in racecheck.

Updates in 2022.3

  • Added support for the NVIDIA GH100/SM 9.x GPU architecture.

  • Added support for the NVIDIA AD10x/SM 8.9 GPU architecture.

  • Added support for lazy kernel loading.

  • Added memcheck support for distributed shared memory.

  • Added new options --num-callers-device and --num-callers-host to control the number of callers to print in stack traces.

  • Added support for OptiX 7.6 applications.

  • Fix bug on Linux ppc64le where the host stack trace was incomplete.

Updates in 2022.2.1

  • Fixed incorrect device backtrace for applications compiled with -lineinfo.

Updates in 2022.2

  • Added memcheck support for use-before-alloc and use-after-free race detection. See the stream-ordered race detection documentation for more information.

  • Added leakcheck support for asynchronous allocations, OptiX resources and CUDA memmap (on Linux only for the latter).

  • Added option to ignore CUDA_ERROR_NOT_FOUND error codes returned by the cuGetProcAddress API.

  • Added new sanitizer API functions to allocate and free page-locked host memory.

  • Added sanitizer API callbacks for the event management API.

Updates in 2022.1.1

  • Fixed initcheck issue where the tool would incorrectly abort a CUDA kernel launch after reporting an uninitialized access on Windows with hardware scheduling enabled.

Updates in 2022.1

  • Added support for generating coredumps.

  • Improved support for stack overflow detection.

  • Added new option --target-processes-filter to filter the processes being tracked by name.

  • Added initcheck support for asynchronous allocations. Requires CUDA driver version 510 or newer.

  • Added initcheck support for accesses on peer devices. Requires CUDA driver version 510 or newer.

  • Added support for OptiX 7 applications.

  • Added support for tracking the child processes of 32-bit processes in multi-process applications on Linux and Windows x86_64.

Updates in 2021.3.1

  • Fixed intermittent issue on vGPU where synccheck would incorrectly detect divergent threads.

  • Fixed potential hang when tracking several graph launches.

Updates in 2021.3

  • Improved Linux host backtrace.

  • Removed requirement to call cudaDeviceReset() for accurate reporting of memory leaks and unused memory features.

  • Fixed synccheck potential hang when calling __syncthreads in divergent code paths on Volta GPUs or newer.

  • Added print of nearest allocation information for memcheck precise errors in global memory.

  • Added warning when calling device-side malloc with an empty size.

  • Added separate sanitizer API device callback for cuda::memcpy_async.

  • Added new command-line option --num-cuda-barriers to override the expected number of cuda::barrier used by the target application.

  • Added new command-line options --print-session-details to print session information and --save-session-details to save it to the output file.

  • Added support for WSL2.

Updates in 2021.2.3

  • Enabled SLS hardening and branch protection for L4T builds.

Updates in 2021.2.2

  • Enabled stack canaries with random canary values for L4T builds.

Updates in 2021.2.1

  • Added device backtrace for malloc/free errors in CUDA kernels.

  • Improved racecheck host memory footprint.

Updates in 2021.2

  • Added racecheck and synccheck support for cuda::barrier on Ampere GPUs or newer.

  • Added racecheck support for __syncwarp with partial mask.

  • Added --launch-count and --launch-skip filtering options. See the Command Line Options documentation for more information.

  • --filter and --exclude options have been respectively renamed to --kernel-regex and --kernel-regex-exclude.

  • Added support for QNX and Linux aarch64 platforms.

  • Added support for CUDA graphs memory nodes.

Updates in 2021.1.1

  • Fixed an issue where incorrect line numbers could be shown in errors reports.

Updates in 2021.1

Updates in 2020.3.1

  • Fixed issue when launching a CUDA graph multiple times.

  • Fixed false positives when using cooperative groups synchronization primitives with initcheck and synccheck.

Updates in 2020.3

  • Added support for CUDA memory pools and CUDA API reduced serialization.

  • Added host backtrace for unused memory reports.

Updates in 2020.2.1

  • Fixed crash when loading cubins of size larger than 2 GiB.

  • Fixed error detection on systems with multiple GPUs.

  • Fixed issue when using CUDA Virtual Memory Management API cuMemSetAccess to remove access to a subset of devices on a system with multiple GPUs.

  • Added sanitizer API to translate between sanitizer and CUDA stream handles.

Updates in 2020.2

  • Added support for CUDA graphs and CUDA memmap APIs.

  • The memory access callback of the sanitizer API has been split into three distinct callbacks corresponding to global, shared and local memory accesses.

Updates in 2020.1.2

  • Added sanitizer stream API. This fixes tool crashes when per-thread streams are being used.

Updates in 2020.1.1

  • Added support for Windows Hardware-accelerated GPU scheduling

  • Added support for tracking child processes spawned by the application launched under the tool via the --target-processes CLI option.

Updates in 2020.1

  • Initial release of the Compute Sanitizer (with CUDA 11.0)

Updates to the Sanitizer API :

  • Added support for per-thread streams

  • Added APIs to retrieve the PC and size of a CUDA function or patch

  • Added callback for cudaStreamAttachMemAsync

  • Added direction to memcpy callback data

  • Added stream to memcpy and memset callbacks data

  • Added launch callback after syscall setup

  • Added visibility field to allocation callback data

  • Added PC argument to block entry callback

  • Added incoming value to memory access callbacks

  • Added threadCount to barrier callbacks

  • Added cooperative group flags for barrier and function callbacks

Updates in 2019.1

  • Initial release of the Compute Sanitizer API (with CUDA 10.1)

Known Limitations

  • Applications run much slower under the Compute Sanitizer tools. This may cause some kernel launches to fail with a launch timeout error when running with the Compute Sanitizer enabled.

  • Compute Sanitizer tools do not support device backtrace on Maxwell devices (SM 5.x).

  • Compute Sanitizer tools do not support coredumps on WSL2.

  • The memcheck tool does not support CUDA API error checking for API calls made on the GPU using dynamic parallelism.

  • The racecheck, synccheck and initcheck tools do not support CUDA dynamic parallelism.

  • CUDA dynamic parallelism is not supported when Windows Hardware-accelerated GPU scheduling is enabled.

  • Compute Sanitizer tools cannot interoperate with other CUDA developer tools. This includes CUDA coredumps which are automatically disabled by the Compute Sanitizer. They can be enabled instead by using the --generate-coredump option.

  • The initcheck tool does not support IPC allocations. Using it will result in false positives.

  • Compute Sanitizer tools are not supported when SLI is enabled.

  • The racecheck tool is not supported under Confidential Computing.

Known Issues

  • The racecheck tool may print incorrect data for “Current value” when reporting a hazard on a shared memory location where the last access was an atomic operation. This can also impact the severity of this hazard.

  • On QNX, when using the --target-processes all option, analyzing shell scripts may hang after the script has completed. End the application using Ctrl-C on the command line in that case.

  • The initcheck tool might report false positives for device-to-host cudaMemcpy operations on padded structs that were initialized by a CUDA kernel. The #pragma pack directive can be used to disable the padding as a workaround.

  • When a hardware exception occur during a kernel launch that was skipped due to the usage of the kernel-name, kernel-name-exclude, launch-count or launch-skip options, the memcheck tool will not be able to report additional details as an imprecise error.

  • The leakcheck feature is disabled under Confidential Computing.

Support

Information on supported platforms and GPUs.

Platform Support

Table 1. Platforms supported by Compute Sanitizer

Platform

Support

Windows

Yes

Linux (x86_64)

Yes

Linux (ppc64le)

No

Linux (aarch64sbsa)

Yes

Linux (aarch64)

Yes

QNX

Yes

MacOSX

No

GPU Support

The compute-sanitizer tools are supported on all CUDA capable GPUs with SM versions 5.0 and above.

Notices

Notice

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