argon2-opencl fails on CPU and MIC
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- Dominant language
- C
- Stars
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Description
A known shortcoming/bug of the argon2-opencl format is that it fails self-test on CPU(-like) devices, as tested with ancient Intel OpenCL and AMD APP SDK that we have on our online dev boxes and with recent Intel OpenCL that @alainesp has on his laptop. We don't know exactly why - a guess is this has something to do with our usage of local memory.
The format works on most GPUs, the only exception identified so far being Intel HD Graphics, where it also fails.
The failures on CPUs and Intel GPU are FAILED (cmp_one(1)). The failure on MIC includes segfaults.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
The issue concerns the argon2-opencl format and reports self-test failures on CPU-like devices, Intel HD Graphics, and MIC, including MIC segfaults. Start by reproducing the self-test on the affected device types and investigate the suspected local-memory usage. Done means the format passes self-test on CPU, Intel GPU, and MIC without segfaults.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- cryptography
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100