Investigate and improve performance of log density evaluation

[sunxd3]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 13560128272

Details

• 0 of 210 (0.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-7.9%) to 74.055%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/source_gen.jl	0	210	0.0%

Totals
Change from base Build 13514768036:	-7.9%
Covered Lines:	1607
Relevant Lines:	2170

---

💛 - Coveralls

[github-actions]

Benchmark results on macOS (aarch64)

BridgeStan not found at location specified by $BRIDGESTAN environment variable, downloading version 2.6.1 to /Users/runner/.bridgestan/bridgestan-2.6.1
Done!

Stan results:

Model	Parameters	Density Time (µs)	Density+Gradient Time (µs)
rats	65	5.1584	7.23633
pumps	12	0.924469	1.05435
oxford	244	11.2915	13.25
epil	303	32.959	37.0
lsat	1006	101.583	145.291
schools	133	239.25	364.938
beetles	2	0.742513	0.824765
air	5	0.862765	0.962786

JuliaBUGS results:

Model	Parameters	Density Time (µs)	Density+Gradient Time (µs)
rats	65	83.917	266.459
pumps	12	13.5415	17.917
oxford	244	407.812	466.75
epil	303	352.021	602.979
lsat	1006	2258.44	3314.27
schools	133	2936.13	8049.83
beetles	2	9.27767	11.6875
air	5	7.75	8.43067

JuliaBUGS source gen (Mooncake) results:

Model	Parameters	Density Time (µs)	Density+Gradient Time (µs)
rats	65	1.24304	7.5
pumps	12	0.674242	2.1285
oxford	244	19.708	53.708
epil	303	8.43033	38.667
lsat	1006	48.25	243.459
schools	133	91.417	697.979
beetles	2	1.03241	3.99317
air	5	0.257479	1.16832

JuliaBUGS source gen (Enzyme) results:

Model	Parameters	Density Time (µs)	Density+Gradient Time (µs)
rats	65	1.46875	1.63476
pumps	12	0.491397	1.08641
oxford	244	18.292	23.208
epil	303	7.51367	10.1665
lsat	1006	42.917	207.458
beetles	2	1.10496	1.71613
air	5	0.252904	0.504167

---

Benchmark results on Ubuntu (x64)

BridgeStan not found at location specified by $BRIDGESTAN environment variable, downloading version 2.6.1 to /home/runner/.bridgestan/bridgestan-2.6.1
Done!

Stan results:

Model	Parameters	Density Time (µs)	Density+Gradient Time (µs)
rats	65	5.1816	7.38367
pumps	12	0.9748	1.23839
oxford	244	13.6855	16.09
epil	303	27.381	33.683
lsat	1006	164.679	201.512
schools	133	469.938	706.531
beetles	2	0.838429	0.977893
air	5	0.6452	0.801486

JuliaBUGS results:

Model	Parameters	Density Time (µs)	Density+Gradient Time (µs)
rats	65	75.812	89.868
pumps	12	12.0625	6.472
oxford	244	366.896	185.978
epil	303	290.644	242.884
lsat	1006	2070.69	1230.13
schools	133	1943.28	3852.95
beetles	2	7.36067	3.479
air	5	6.675	2.42033

JuliaBUGS source gen (Mooncake) results:

Model	Parameters	Density Time (µs)	Density+Gradient Time (µs)
rats	65	2.14554	13.6655
pumps	12	0.627417	2.8263
oxford	244	23.243	73.047
epil	303	11.4765	55.173
lsat	1006	74.522	331.861
schools	133	107.612	1128.14
beetles	2	1.10977	4.85233
air	5	0.341025	1.3906

JuliaBUGS source gen (Enzyme) results:

Model	Parameters	Density Time (µs)	Density+Gradient Time (µs)
rats	65	2.1025	2.58391
pumps	12	0.617957	1.03927
oxford	244	23.153	20.929
epil	303	11.5065	16.19
lsat	1006	75.681	283.792
beetles	2	1.09911	1.94567
air	5	0.340632	0.362329