Sometimes many pools have to be configured and one wants to make sure that
- one doesn't have to specify all the time the previously mentioned configuration file
- a given configuration file is garanteed to be used for an entire set of pools
- all one has to do is to maintain a list of preconfigured event pools in an ASCII configuration file.
This is achieved through the environment variable DDD_CONFIGURATION_FILE. If an event pool is created/access and this environment variable is set, then the process scans this file and sees whether the pool has been defined. If so, it takes the configuration parameters from this file.
The format of the file is the following:
#
# DD configuration file
#
MDCX localhost config_file1.txt
ONLINE0 phoncs11.phenix.bnl.gov config_file2.txt
Note the following:
- Comments in the file are supported through the character #
- You can either specify the host or use the name localhost, which means that the local host will be used.
- The distribution has an example directory dd_data, which contains a few examples.
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