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| author | Arun Isaac | 2024-10-02 01:07:28 +0100 |
|---|---|---|
| committer | Arun Isaac | 2024-10-02 02:08:58 +0100 |
| commit | 0e5de7766173a2812183c5c26759c1c27e8d8e40 (patch) | |
| tree | 69e11d827936e158b9da42f03238fe6cb1845a3b | |
| parent | 707774f68f11f82cf2756bae406938b380c35d8b (diff) | |
| download | ravanan-0e5de7766173a2812183c5c26759c1c27e8d8e40.tar.gz ravanan-0e5de7766173a2812183c5c26759c1c27e8d8e40.tar.lz ravanan-0e5de7766173a2812183c5c26759c1c27e8d8e40.zip | |
propnet: Explain in detail why we never cancel running propagators.
* ravanan/propnet.scm (poll-propnet): Add detailed comment elaborating on why we never cancel or forget about running propagators.
| -rw-r--r-- | ravanan/propnet.scm | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/ravanan/propnet.scm b/ravanan/propnet.scm index ca5c629..e6155d8 100644 --- a/ravanan/propnet.scm +++ b/ravanan/propnet.scm @@ -210,8 +210,15 @@ add to the inbox." cell-values-inbox other-propagators ;; We don't need to cancel or forget about previous runs of the - ;; same propagator because cells only "accumulate" information; - ;; they never remove it. + ;; same propagator because cells only *accumulate* information; + ;; they never remove it. Any previous runs of the same + ;; propagator will only *add to* the information in the output + ;; cells. Previous runs may be closer to completion and taking + ;; advantage of their output may allow later stages to start + ;; running sooner, thus improving throughput. In our CWL + ;; application of propnets, this will never result in the same + ;; step being recomputed; so this approach does not come at a + ;; higher computational cost. (append (maybe-alist (cons (propagator-name propagator) (activate-propagator |