Opened 9 months ago

#445 new feature

Add a compute cost stack and a primop to measure the cost of a computation.

Reported by: benl Owned by:
Priority: normal Milestone: memoizer
Component: Runtime System Version: none
Keywords: Cc:

Description

We want a measure# primop that runs a given computation while measuring the runtime cost in both cycles and bytes allocated on the heap.

measure# : forall a. S Pure a -> (a, Cost)
data Cost = Cost {cycles: Word64, bytes: Word64}

We should first add primops to read the native CPU cycle counter, and a count of the number of bytes allocated since the start of the program. To measure the cost of a computation we then store the current cycle count and number of allocated bytes to some temp storage, run the computation, then compare the old values with the new values.

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