Parfeval, Backgroundpool and Webread

10 Ansichten (letzte 30 Tage)
Xymbu
Xymbu am 10 Jan. 2022
Kommentiert: Raymond Norris am 17 Feb. 2022
I am trying to use parfeval to do a webread on a background pool and it responds with the message...
Invalid default value for property 'UserAgent' in class 'weboptions':Use of function version is not supported on a thread-based worker. Use alternatives supported on the background pool.
which I assume means I can't use webread with the background pool.
is there another way to do this?

Akzeptierte Antwort

Edric Ellis
Edric Ellis am 10 Jan. 2022
Unfortunately, as you suspect, right now the only way to do this is to use a process pool via parpool('local') or similar.
  2 Kommentare
Alex Alex
Alex Alex am 17 Feb. 2022
The message says that there are alternatives supported on the backgound pool. Could you give a hint what they are? matlab.net.http.RequestMessage? Thank you.
Raymond Norris
Raymond Norris am 17 Feb. 2022
As Edric suggests, use a local parallel pool.
pool = parpool("local",1);
f = pool.parfeval(@webread,1,'http://www.mathworks.com');
f.wait
size(f.fetchOutputs)

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (0)

Kategorien

Mehr zu Startup and Shutdown finden Sie in Help Center und File Exchange

Produkte


Version

R2021b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by