Parfeval, Backgroundpool and Webread

8 次查看（过去 30 天）
Xymbu
Xymbu 2022-1-10
评论： Raymond Norris 2022-2-17
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?

请先登录，再回答此问题。

采纳的回答

Edric Ellis
Edric Ellis 2022-1-10
Unfortunately, as you suspect, right now the only way to do this is to use a process pool via parpool('local') or similar.
  2 个评论
Alex Alex
Alex Alex 2022-2-17
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 2022-2-17
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)

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Startup and Shutdown 的更多信息

标签

产品


版本

R2021b

Community Treasure Hunt

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

Start Hunting!

Translated by