So I am not sure if this is a bug in Criterion itself, the Statistics
package or any dependency or if I am doing something obviously wrong. I
would be grateful if someone could look into this as it is holding me
back from using Criterion for benchmarking my code.
I would suspect Statistics.Resampling.resample. From quick glance
criterion doesn't use any concurrent stuff. I'll try create smaller test
case
It looks like I'm wrong. I obtained event log from crashing program
and resample completed its work without problems. Crash occured
later. Next
suspect is bootstrapBCA itself. It uses monad-par to obtain parallelism[1].
I tried to create smaller test case without any success.
[1]
https://github.com/bos/statistics/blob/master/Statistics/Resampling/Bootstrap.hs#L84
Replacing "runPar $ parMap" with a simple "map" on that line seems to
fix the bug. At least I could not reproduce it anymore on several runs
with my original test case. So it seems to be a bug in the Par monad
package as this change shouldn't alter the program's behaviour, should
it?
Regards,
Till
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