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MemtestG80 and MemtestCL are software-based tester to test for "soft errors" in GPU memory or logic for GPUs supporting CUDA or OpenCL.

License: MemtestCL Source Code, MemtestG80 Binaries, MemtestG80 Source Code

MemtestG80 and MemtestCL are a software-based testers to test for "soft errors" in GPU memory or logic for NVIDIA CUDA-enabled or OpenCL-enabled (of any manufacturer) GPUs. They use a variety of proven test patterns (some custom and some based on Memtest86) to verify the correct operation of GPU memory and logic. They are useful tools to ensure that given GPUs do not produce "silent errors" which may corrupt the results of a computation without triggering an overt error.

For the latest code, please visit

Haque IS and Pande VS. Hard Data on Soft Errors: A Large-Scale Assessment of Real-World Error Rates in GPGPU. In Proceedings of 10th IEEE/ACM International Conference on Cluster, Cloud, and Grid Computing (CCGrid 2010), pp 691-696.


This project offers prebuilt binaries as well as source code for the CUDA-based MemtestG80 tester (NVIDIA-only) and OpenCL-based MemtestCL (vendor-agnostic).

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