pctRunOnAll does not recognize current parallel pool

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Chris10116
Chris10116 el 18 de Sept. de 2019
Comentada: Chris10116 el 19 de Sept. de 2019
Inside a parfor loop I want to surpress warnings with pctRunOnAll but I get the error message: Cannot execute pctRunOnAll warning_off_WarnIfIllConditioned when a parallel pool does not exist. What should I do?
parfor V_g_i = 1:length(V_g_vec)
pctRunOnAll warning_off_WarnIfIllConditioned
%% Other code
[Vi,~] = eigs(mat,1,10^(-19)); % mat is an ill-conditioned matrix
%% Other code
end

Respuesta aceptada

Edric Ellis
Edric Ellis el 19 de Sept. de 2019
You should use pctRunOnAll at the client, i.e. before the start of the loop, like this:
gcp(); % Ensure we have a parallel pool that parfor will use
pctRunOnAll warning_off_WarnIfIllConditioned
parfor V_g_i = 1:length(V_g_vec)
%% Other code
[Vi,~] = eigs(mat,1,10^(-19)); % mat is an ill-conditioned matrix
%% Other code
end
(I assume warning_off_WarnIfIllConditioned is a script or function you have to make the necessary warning modifications)
  1 comentario
Chris10116
Chris10116 el 19 de Sept. de 2019
Thank you very much. Easy as that. I thought it automatically creates a parallel pool if I insert a parfor.

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