Hoffman2:Interactive Mode

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Interactive mode allows you to start a session on a working node with specific resource. To initiate a interactive mode, use qrsh command.

To reserve 1 core, 1 GB memory for 2 hours, simply

qrsh

qrsh can take arguments with "-l" option to specify more detailed resource requests.

hdata: per-core memory size
h_rt: job running time

Examples:

To reserve 4G for 10 hours ( Note: The job length cannot be more than 24 hours without "highp")

qrsh –l h_data=4G,h_rt=10:00:00 

To reserve 2 cores with 4G memory for 8 hours ( Note: Total memory reserved will be 2 x 4 = 8GB)

qrsh –l h_data=4G,h_rt=8:00:00 –pe shared 2

To reserve for jobs longer than 24 hours needs “highp” (CCN contributed nodes)

qrsh -l h_data=4G,h_rt=72:00:00,highp