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### Review statement
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Parallel Bilby (pBilby) provides the infrastructure to use Bilby in a parallel computing setting. The review here follows the [Sampler Review Specification](https://docs.google.com/document/d/1kJAV_Q7gK03wNnEb3E5Juz3-Uiuh0R6yScgmzMGH3C0/edit#heading=h.3tjq4cvchjje). All results pass the review. The PP tests are unbiased, and the runs on real events are statistically identical to those produced previously for GWTC-3. For GW191109 (a prior dominated event), the differences between the recent rerun and the catalog are larger, [consistent with the main Bilby review](https://git.ligo.org/pe/O4/bilby_o4_review/-/issues/31). In addition, scaling tests and energy usage statistics are presented.
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Parallel Bilby (pBilby) provides the infrastructure to use Bilby in a parallel computing setting. The review here follows the [Sampler Review Specification](https://docs.google.com/document/d/1kJAV_Q7gK03wNnEb3E5Juz3-Uiuh0R6yScgmzMGH3C0/edit#heading=h.3tjq4cvchjje). All results pass the review. The PP tests are unbiased, and the runs on real events are statistically identical to those produced previously for GWTC-3. For GW191109 (a prior dominated event), the differences between the recent rerun and the catalog are larger, [consistent with the main Bilby review](https://git.ligo.org/pe/O4/bilby_o4_review/-/issues/31 "dynesty: GW191109_010717"). In addition, scaling tests and energy usage statistics are presented.
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\-- Simon Stevenson 8th May 2023
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| ... | ... | @@ -24,8 +24,6 @@ Parallel Bilby (pBilby) provides the infrastructure to use Bilby in a parallel c |
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- The results are [on zenodo](https://zenodo.org/record/7884973)
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- The comparison LVK results are the XPHM-no-cosmo posteriors.
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<details>
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<summary>
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</details>
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#### pbilby 2.0.1 --> 2.0.2
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During the review we updated pbilby to 2.0.2, in which the main changes were:
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- documentation fixes,
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- store the total-number of LnL calls in the result metadata
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- store the result in both the `hdf5` and the `json` formats after sampling
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## Review Tasks
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| Task | Assigned | Analysed? | Reviewed? |
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| [GW200208](#gw200208) | Rory | ✓ | :white_check_mark: [@simon-stevenson](#) |
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| [Fiducial BBH Inj](#fiducial-bbh-inj) | Avi | ✓ | :white_check_mark: [@simon-stevenson](#) |
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| [BBH Scaling test](#bbh-scaling-test) | Avi | ✓ | :white_check_mark: [@simon-stevenson](#) |
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| [BNS Scaling test](#bns-scaling-test) | Avi | ✓ | |
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| [BNS Scaling test](#bns-scaling-test) | Avi | ✓ | :white_check_mark: [@simon-stevenson](#) |
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| [4s BBH PP-test](#4s-bbh-pp-test) | Avi | ✓ | :white_check_mark: [@simon-stevenson](#) |
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| [16s BBH PP-test](#16s-bbh-pp-test) | Avi | ✓ | :white_check_mark: [@simon-stevenson](#) |
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| [64s NSBH PP-test](#64s-bbh-pp-test) | Avi | ✓ | :white_check_mark: [@simon-stevenson](#) |
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</details>
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## BNS Scaling test
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Analysed a 128s BNS injection with nCPU 8, 16, 32.
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</details>
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<details>
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<summary>Results</summary>
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| ncpu | time | nsamples | log_evidence | log_evidence_err |
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|-------:|--------:|-----------:|---------------:|-------------------:|
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|------|------|----------|--------------|------------------|
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| 8 | 82551.1 | 5764 | -519220 | 0.175312 |
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| 16 | 53819.2 | 5597 | -519220 | 0.174741 |
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| 32 | 43447.5 | 5693 | -519220 | 0.176116 |
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| {height="500"} |
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| {height="1000"} |
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</details>
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## 4s BBH PP Test
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## Convergence test: 128s BNS (ROQ) PP-test
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## Energy/carbon footprint of review
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| Job | Walltime \[hr\] | CPU Runtime \[hr\] | kg CO2^ |
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