[Bioc-devel] BiocParallel and Shiny

Giulia Pais g|u||@p@|@1 @end|ng |rom gm@||@com
Thu Jul 7 11:45:57 CEST 2022

Hi, thanks for the reply.
Yes I’ve looked at this article, it seems to me like I have to access to the “status” of a worker in order to do that, correct?
I mean, is there a way through BiocParallel interface in which I can receive a notification when a worker has finished a task? It is not clear to me how BiocParallel manages to update the progress bar internally – I guess the mechanism is similar to the one I described: distribute workload • when a worker has finished a task notify and update progress bar by one tick.
I’m honestly not too practical with asynch task management in R, sorry.

Thank you

From: Vincent Carey <stvjc using channing.harvard.edu>
Date: Thursday, July 7, 2022 at 11:40
To: Giulia Pais <giuliapais1 using gmail.com>
Cc: bioc-devel using r-project.org <bioc-devel using r-project.org>
Subject: Re: [Bioc-devel] BiocParallel and Shiny
Interesting question.  Have you looked at https://shiny.rstudio.com/articles/progress.html ...?  There is
also a file called progress.R in BiocParallel/R folder.  Probably some new code needs to be written
to connect information from the BiocParallel activities to the server so incProgress is run as needed.

On Thu, Jul 7, 2022 at 4:48 AM Giulia Pais <giuliapais1 using gmail.com<mailto:giuliapais1 using gmail.com>> wrote:
I have a question on the use of BiocParallel with Shiny: I would like to show a progress bar on the UI much like the standard progress bar that can be set in functions like bplapply() – is it possible to do it and how? I haven’t found anything on the topic in the documentation unfortunately.

Thanks in advance,
Giulia Pais

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