News and Information

Configuration of Java Startup Default Options JAVA_TOOL_OPTIONS

July 24, 2013
Dear HGC Supercomputer user,

Human Genome Center
Supercomputing Services

Thank you very much for using our center's services.

We are writing to inform you that we have recently made some changes to set the environment variables JAVA_TOOL_OPTIONS when you log in to Shirokane1 and 2.
These variables are used when running Java.

These settings add the "-XX:+UseSerialGC -Xmx64m -Xms32m" options by default when running Java on Shirokane1 and 2.

Please use the following methods to clear the JAVA_TOOL_OPTIONS environment variables: [bash] unset JAVA_TOOL_OPTIONS
[tcsh] unsetenv JAVA_TOOL_OPTIONS

Also, please use the following methods to override the JAVA_TOOL_OPTIONS environment variables: [bash] export JAVA_TOOL_OPTIONS="option"
[tcsh] setenv JAVA_TOOL_OPTIONS "option"

Please do not hesitate to contact us with any comments or queries.

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