parfor loop: Unexpected failure to indicate all intervals added

New to using parfor. Changed 'for' to 'parfor' and subsequently edited code body to remove all errors/warnings. I run I get:

Error using distcomp.remoteparfor/rebuildParforController (line 217)

Unexpected failure to indicate all intervals added.

Error in distcomp.remoteparfor/handleIntervalErrorResult (line 253)

obj.rebuildParforController();

Error in distcomp.remoteparfor/getCompleteIntervals (line 387)

[r, err] = obj.handleIntervalErrorResult(r);

Error in OutTest_VectorGeneric>Criteria_Evaluate (line 110)

parfor j = 1 : numPix

Little to no idea what the error actually means and what I can do on my side to resolve it.

Thanks, -Jesse

[Edric Ellis]

This is an unexpected internal error condition. Does this happen for all parfor loops, or just a specific one? If it happens for all loops, then you might have some sort of installation problem. If it happens for a specific loop, then please could you post a minimal example that demonstrates the problem.

Answer 1

[jmgoldba]

TL;DR Solved it. Thanks for getting back.

I'd blown off a runtime warning about "unitialized temporaries". Don't do that. Especially if the warning includes "a runtime error will occur". Got rid of the warning, got rid of the error. I was probably exhausted at the time from correcting all the static errors and warnings after converting to parfor and at runtime decided to punt :)

Answer 2

[Susan Ding]

Might you explain briefly how to solve it? Thanks.

[jmgoldba]

This is going on a couple years and I don't recall the specific instance. The short story is the runtime error was solved by getting rid of the warning. I don't recall specifically what the solution was to get rid of the warning though it was likely unique to my particular implementation. -Jesse