Parallel remote kernel: MathLink connection not active
- To: mathgroup at smc.vnet.net
- Subject: [mg121573] Parallel remote kernel: MathLink connection not active
- From: Andrew <haines42 at gmail.com>
- Date: Tue, 20 Sep 2011 06:10:02 -0400 (EDT)
- Delivered-to: firstname.lastname@example.org
I'm struggling to set up parallel remote kernels, and searching around
it seems that I am not alone but I could not find a solution.
In my case, both client and server are running Windows; the server is
running CopSSH and I have successfully set up a single remote kernel
java -jar "`mathssh`" user@server "math -mathlink -LinkMode Connect -
LinkProtocol TCPIP -LinkName `linkname` -LinkHost x.x.x.x"
where x.x.x.x is the client's IP. I can set a notebook to use this
remote kernel, and executing $MachineName gives the name of the
server, so everything is working as expected.
However, I can't seem to get the same to work for parallel kernels. I
have pretty much just copied the configuration across and tweaked the
java -jar "C:\Program Files\Wolfram \
"math -mathlink -LinkMode Connect -LinkProtocol TCPIP -LinkName `2` -
LinkHost x.x.x.x -subkernel -noinit >& /dev/null &"
However, when it fires up, the server kernel spits out the error
LinkObject[55512 at x.x.x.x,55513 at x.x.x.x, 1, 1]
which "is generated by an attempt to access a MathLink connection that
is not active".
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