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2026-04-09T21:18:34Z
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Frodo: capture nailgun info
2020-03-18T20:52:01Z
<p>capture nailgun info</p>
<p><b>New page</b></p><div><pre><br />
installed Nailgun on the cluster.<br />
I did the following in /nfs/home/stefan/NAILGUN/nailgun-master<br />
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1) Install with maven <br />
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$ /nfs/home/stefan/NAILGUN/apache-maven-3.6.3/bin/mvn clean install<br />
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Since we have Java 1.8 on the cluster, the Build worked out.<br />
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2) This is what we've been missing so far: We need to generate a class path containing the server and the classes we want to run with nailgun:<br />
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$ export CLASSPATH="/nfs/home/stefan/NAILGUN/nailgun-master/nailgun-server/target/classes:/nfs/home/stefan/NAILGUN/nailgun-master/nailgun-examples/target/classes:/nfs/soft/jchem/jchem-19.15/lib/*"<br />
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3) Start the server:<br />
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$ java com.facebook.nailgun.NGServer & <br />
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4) Now you can run the classes with the nailgun client<br />
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./nailgun-client/target/ng com.facebook.nailgun.examples.HelloWorld<br />
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Just as an example that this actually is faster as compared to "classic" java:<br />
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Classic Java<br />
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$ time java com.facebook.nailgun.examples.HelloWorld<br />
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Hello, world!<br />
<br />
real 0m1.794s<br />
<br />
user 0m0.336s<br />
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sys 0m1.414s<br />
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Nailgun<br />
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$ time ./nailgun-client/target/ng com.facebook.nailgun.examples.HelloWorld<br />
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Hello, world!<br />
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real 0m0.025s<br />
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user 0m0.001s<br />
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sys 0m0.005s<br />
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So it seems to speed up things.<br />
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As for Jchem, I don't know why it works, but it does :)<br />
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Normal execution of cxcalc<br />
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$ time cxcalc<br />
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Calculator, (C) 1998-2019 ChemAxon Ltd.<br />
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version 19.15.0<br />
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...<br />
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real 0m22.604s<br />
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user 0m28.868s<br />
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sys 0m19.380s<br />
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Normal execution with Java<br />
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$ time java chemaxon.marvin.Calculator<br />
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Calculator, (C) 1998-2019 ChemAxon Ltd.<br />
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version 19.15.0<br />
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...<br />
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real 0m19.084s<br />
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user 0m28.498s<br />
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sys 0m19.360s<br />
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First execution with nailgun<br />
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$ time ./nailgun-client/target/ng chemaxon.marvin.Calculator<br />
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Calculator, (C) 1998-2019 ChemAxon Ltd.<br />
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version 19.15.0<br />
<br />
...<br />
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real 0m12.016s<br />
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user 0m0.000s<br />
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sys 0m0.008s<br />
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Subsequent execution with nailgun<br />
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$ time ./nailgun-client/target/ng chemaxon.marvin.Calculator<br />
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Calculator, (C) 1998-2019 ChemAxon Ltd.<br />
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version 19.15.0<br />
<br />
<br />
...<br />
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real 0m0.014s<br />
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user 0m0.001s<br />
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sys 0m0.004s<br />
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So the speedup of opening cxcalc multiple times within the server is 1000-fold???<br />
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</pre></div>
Frodo