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Reduce object-bits for test to avoid OOM - #3511
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feliperodri
approved these changes
Sep 9, 2024
celinval
commented
Sep 10, 2024
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I wonder if we should tweak with the current default |
zhassan-aws
commented
Sep 10, 2024
ContributorAuthor
I tried tweaking the test, but eventually gave up. For example, switching from 32-bit integers to 16 or 8-bits does not decrease the memory usage much. I'm open to suggestions. |
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Kani often runs out of memory on
tests/expected/function-contract/history/stub.rswhen running the regressions. In particular,quadruple_harnessconsumes over 9 GB of memory. This PR reduces the object bits for this test to 8 to avoid OOM issues. This brings down memory usage to ~125 MB.Before:
$ /usr/bin/time -v kani -Zfunction-contracts stub.rs --harness quadruple_harness Maximum resident set size (kbytes): 9136036After:
$ /usr/bin/time -v kani -Zfunction-contracts stub.rs --harness quadruple_harness --enable-unstable --cbmc-args --object-bits 8 ... Maximum resident set size (kbytes): 125172By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 and MIT licenses.