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Re: Passing variables between octave processes on the same machine

From: Sergei Steshenko
Subject: Re: Passing variables between octave processes on the same machine
Date: Sun, 20 Jan 2019 17:42:40 +0000 (UTC)

On Sunday, January 20, 2019, 7:36:25 PM GMT+2, Pavel Hofman <address@hidden> wrote:


Please does anyone have any experience with passing complete variables
between two independent octave processes (not parent/child via popen)?

The transport channel is easy - sockets, zeromq etc. I assume for
serialization I could use the 'save' function:

bitstream = save('-', 'variable')

But I was not able to find a simple way to deserialize contents of the
'bitstream' variable back to 'variable'. The 'load' function does not
accept input from a variable (as far as I understand the documentation),
only from a real file.

Actually, I would love to use a sequence of plain files but several
messages must be sent every second and SSD drives do not like this
constant create/delete file load. Creating a RAM drive would work but I
need a multiplatform solution (linux, windows) and creating the
platform-specific RAM drive would overcomplicate the project deployment.

Thank you in advance for any suggestions, experience, etc.

Best regards,



Start from named pipes "Introduction to Named Pipes" - Introduction to Named Pipes | Linux Journal


Using named pipes you can save Octave variables using 'save' in one process and load Octave variables in another process using 'load'. And/or maybe 'fwrite' and 'fread' preceded by 'fopen'.

Named pipes also exist in Windows.


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