add check for existance of output dir for memtest #5574
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PrometheusPi
added
component: tools
ikbuibui
approved these changes
Dec 9, 2025
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I encountered an issue on OLCF Frontier where we ran through the memtest loop, saw a defective node/GPU, but could not write out the error file. @psychocoderHPC and I suspect that the file system was not available or up-to-date on the defective node, thus preventing any useful error log.
To prevent this kind of bug in the future, this PR adds a check that writes to stderr if the directory to which to write the error log is not available.