Seed RNG inside model_dimension()

[penelopeysm]

Closes #905. The problem is that there were certain parameter values that would cause link(vi, model) to fail.

[github-actions]

Benchmark Report for Commit e89a68a

Computer Information

Julia Version 1.11.5
Commit 760b2e5b739 (2025-04-14 06:53 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 4 × AMD EPYC 7763 64-Core Processor
  WORD_SIZE: 64
  LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)

Benchmark Results

|                 Model | Dimension |  AD Backend |      VarInfo Type | Linked | Eval Time / Ref Time | AD Time / Eval Time |
|-----------------------|-----------|-------------|-------------------|--------|----------------------|---------------------|
| Simple assume observe |         1 | forwarddiff |             typed |  false |                  9.6 |                 1.6 |
|           Smorgasbord |       201 | forwarddiff |             typed |  false |                743.8 |                37.4 |
|           Smorgasbord |       201 | forwarddiff | simple_namedtuple |   true |                305.2 |                68.2 |
|           Smorgasbord |       201 | forwarddiff |           untyped |   true |               1272.4 |                27.2 |
|           Smorgasbord |       201 | forwarddiff |       simple_dict |   true |               3306.6 |                24.7 |
|           Smorgasbord |       201 | reversediff |             typed |   true |               1478.6 |                29.3 |
|           Smorgasbord |       201 |    mooncake |             typed |   true |                973.0 |                 5.5 |
|    Loop univariate 1k |      1000 |    mooncake |             typed |   true |               5547.8 |                 4.1 |
|       Multivariate 1k |      1000 |    mooncake |             typed |   true |               1088.7 |                 9.9 |
|   Loop univariate 10k |     10000 |    mooncake |             typed |   true |              61602.5 |                 3.7 |
|      Multivariate 10k |     10000 |    mooncake |             typed |   true |               9451.3 |                 9.4 |
|               Dynamic |        10 |    mooncake |             typed |   true |                134.9 |                13.7 |
|              Submodel |         1 |    mooncake |             typed |   true |                 14.2 |                 6.2 |
|                   LDA |        12 | reversediff |             typed |   true |                468.8 |                 6.1 |

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.10%. Comparing base (b0ff259) to head (e89a68a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #923   +/-   ##
=======================================
  Coverage   85.10%   85.10%           
=======================================
  Files          36       36           
  Lines        3954     3954           
=======================================
  Hits         3365     3365           
  Misses        589      589           

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[coveralls]

Pull Request Test Coverage Report for Build 15075859865

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 22 unchanged lines in 11 files lost coverage.
• Overall coverage decreased (-4.9%) to 80.215%

---

Files with Coverage Reduction	New Missed Lines	%
ext/DynamicPPLEnzymeCoreExt.jl	1	0.0%
ext/DynamicPPLForwardDiffExt.jl	1	63.64%
src/sampler.jl	1	89.23%
src/simple_varinfo.jl	1	75.14%
src/varnamedvector.jl	1	89.36%
src/contexts.jl	2	74.79%
src/logdensityfunction.jl	2	52.27%
src/model.jl	2	84.17%
src/utils.jl	2	73.8%
src/values_as_in_model.jl	3	59.52%

Totals
Change from base Build 14935073817:	-4.9%
Covered Lines:	3138
Relevant Lines:	3912

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 15098387875

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 22 unchanged lines in 11 files lost coverage.
• Overall coverage remained the same at 85.19%

---

Files with Coverage Reduction	New Missed Lines	%
ext/DynamicPPLEnzymeCoreExt.jl	1	0.0%
ext/DynamicPPLForwardDiffExt.jl	1	63.64%
src/sampler.jl	1	89.23%
src/simple_varinfo.jl	1	75.14%
src/varnamedvector.jl	1	89.36%
src/contexts.jl	2	74.79%
src/logdensityfunction.jl	2	52.27%
src/model.jl	2	84.17%
src/utils.jl	2	73.8%
src/values_as_in_model.jl	3	59.52%

Totals
Change from base Build 15098141060:	0.0%
Covered Lines:	3365
Relevant Lines:	3950

---

💛 - Coveralls

[github-actions]

DynamicPPL.jl documentation for PR #923 is available at:
https://TuringLang.github.io/DynamicPPL.jl/previews/PR923/