parfor failed to deserialize data.

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Yi-Ping
Yi-Ping 2013-8-9
评论： Kalpesh Patil 2017-1-2
Hi,
I tried to run a program using parfor. The code looks like
matlabpool open local 3
parfor i=1:n
..........
end
matlabpool close
where n is about 150000. I have tested the code, when n is small, it works perfectly. However, when I increased n to 150000, it did finished about 2/3 of the parfor loop, the error occur. The error message is
Error using distcompdeserialize Failed to deserialize data.
The machine I used is SunX4100, 4 AMD Opteron and 8Gb memory (2Gb each). The operating system is CentOS 6 and matlab version is R2013a.
Cheers, YP

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Friedrich
Friedrich 2013-8-9
编辑：Friedrich 2013-8-9
Hi,
it seems like a worker is sending back data to MATLAB which is corruped or too big. keep in mind the size limitation of transfering data between MATLAB and the worker:
64-bit: 2.0 GB
32-bit: 600 MB
Can you share code which raises this error? Do you get that error also when running the code on a different machine?
  2 个评论
Yi-Ping
Yi-Ping 2013-8-13
Hi Friedrich,
Thanks for your answer. The code is working fine now. I reduce the transfering data and run on other machine with larger memory.
Cheers, YP
Kalpesh Patil
Kalpesh Patil 2017-1-2
HI Yi-Ping, I was also facing same issue about 'deserialize' error. When I use parfor with matlabpool with 2 workers. It works fine, but with 4 it gives error. SO i want to ask how to reduce the transferring data, can you share a bit of code you used for data reduction.

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