Transparency violation error for cvx

Question

Waqar Ahmed 2021-10-6

回答： Raymond Norris 2021-10-6

I am having cvx inside the parfor loop and I am getting error below

Error using cvx_begin (line 41)

Transparency violation error.

See Workspace Transparency in MATLAB Statements.

My question is it is possible to use cvx code using parfor loop. if yes how can I avoid transparency error.

Answer 1

Raymond Norris 2021-10-6

It doesn't appear so. cvx_begin is calling assignin on line 41. This would be akin to calling

local = parcluster('local');
pool = local.parpool(1);
parfor idx = 1:1
    assignin('caller','A',rand)
end

It's a transparency violation to try to have a worker assign back to the caller a variable (A in this case).