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 6571a5a

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 |                 3.7 |
|           Smorgasbord |       201 | forwarddiff |             typed |  false |                725.9 |                36.1 |
|           Smorgasbord |       201 | forwarddiff | simple_namedtuple |   true |                433.4 |                47.2 |
|           Smorgasbord |       201 | forwarddiff |           untyped |   true |               1233.6 |                28.8 |
|           Smorgasbord |       201 | forwarddiff |       simple_dict |   true |               3837.9 |                21.8 |
|           Smorgasbord |       201 | reversediff |             typed |   true |               1438.2 |                29.3 |
|           Smorgasbord |       201 |    mooncake |             typed |   true |                948.4 |                 5.2 |
|    Loop univariate 1k |      1000 |    mooncake |             typed |   true |               5414.7 |                 4.1 |
|       Multivariate 1k |      1000 |    mooncake |             typed |   true |               1139.3 |                 7.9 |
|   Loop univariate 10k |     10000 |    mooncake |             typed |   true |              59887.5 |                 3.8 |
|      Multivariate 10k |     10000 |    mooncake |             typed |   true |              10148.6 |                 8.5 |
|               Dynamic |        10 |    mooncake |             typed |   true |                142.9 |                11.6 |
|              Submodel |         1 |    mooncake |             typed |   true |                 12.8 |                 6.8 |
|                   LDA |        12 | reversediff |             typed |   true |                449.0 |                 5.7 |

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.01%. Comparing base (cdeb657) to head (6571a5a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #923   +/-   ##
=======================================
  Coverage   85.01%   85.01%           
=======================================
  Files          35       35           
  Lines        3924     3924           
=======================================
  Hits         3336     3336           
  Misses        588      588           

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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 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 remained the same at 85.102%

---

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:	0.0%
Covered Lines:	3336
Relevant Lines:	3920

---

💛 - Coveralls