Slower OMX skim loading in 2.16 #90
Description
When testing Sharrow implementation for SANDAG ABM3 with ActivitySim 1.5.1, we found that runtime for mp_setup_skims was greatly increased when running with Sharrow 2.16. Downgrading to Sharrow 2.15 brought runtime back down, comparable to non-sharrow runs.
mp_setup_skims
Sharrow 2.16: 29.8 minutes (1789.4 seconds)
Sharrow 2.15: 7.4 minutes (446.4 seconds)
ActivitySim log files for both runs attached:
activitysim_sharrow_mp_test_2.log
activitysim_sharrow_mp_test_3.log
Activity
billyc commentedon Oct 29, 2026
@janzill -
per today's engr meeting, openmatrix v0.4.0 with h5py internals is now released on pypi.
janzill commentedon Oct 31, 2026
Nice, thanks Billy! @jpn-- this would be a good new baseline for comparisons in #87