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Full Discussion: I/O bound computing clusters
Special Forums UNIX and Linux Applications High Performance Computing I/O bound computing clusters Post 302692459 by figaro on Monday 27th of August 2012 04:39:13 PM
Old 08-27-2012
Thank you again for your response.
Our backbone is 1GB as far as I know, but would have to check. The bigger issue is with nodes on the WAN, we should be lucky to sustain 1MB on those lines. That means we should consider compression/decompression for the results.
I will have our administrator look into setting up NFSes on the available nodes.
Our application stack is fairly standard: FreeBSD 8.x with a C++/mysql/python application. This should eliminate the diversity problem, but that doesn't mean we will not run into hardware issues. We may even have to assign the jobs greedily to the node with the fastest CPU first.
 

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GRID-DEFAULT-CA(8)						  Globus Commands						GRID-DEFAULT-CA(8)

NAME
grid-default-ca - Select default CA for certificate requests SYNOPSIS
grid-default-ca [-help] [-h] [-usage] [-u] [-version] [-versions] grid-default-ca -list [-dir CA-DIRECTORY] grid-default-ca [-ca CA-HASH] [-dir CA-DIRECTORY] DESCRIPTION
The grid-default-ca program sets the default certificate authority to use when the grid-cert-request script is run. The CA's certificate, configuration, and signing policy must be installed in the trusted certificate directory to be able to request certificates from that CA. Note that some CAs have different policies and use other tools to handle certificate requests. Please consult your CA's support staff if you unsure. The grid-default-ca is designed to work with CAs implemented using the globus_simple_ca package. By default, the grid-default-ca program displays a list of installed CA certificates and the prompts the user for which one to set as the default. If invoked with the -list command-line option, grid-default-ca will print the list and not prompt nor set the default CA. If invoked with the -ca option, it will not list or prompt, but set the default CA to the one with the hash that matches the CA-HASH argument to that option. If grid-default-ca is used to set the default CA, the caller of this program must have write permissions to the trusted certificate directory. The grid-default-ca program sets the CA in the one of the grid security directories. It looks in the directory named by the GRID_SECURITY_DIR environment, the X509_CERT_DIR, /etc/grid-security, and $GLOBUS_LOCATION/share/certificates. The full set of command-line options to grid-default-ca are: -help, -h, -usage, -u Display the command-line options to grid-default-ca and exit. -version, -versions Display the version number of the grid-default-ca command. The second form includes more details. -dir CA-DIRECTORY Use the trusted certificate directory named by CA-DIRECTORY instead of the default. -list Instead of changing the default CA, print out a list of all available CA certificates in the trusted certificate directory -ca CA-HASH Set the default CA without displaying the list of choices or prompting. The CA file named by CA-HASH must exist. EXAMPLES
List the contents of the trusted certificate directory that contain the string Example: % grid-default-ca | grep Example 15) cd1186ff - /DC=org/DC=Example/DC=Grid/CN=Example CA Choose that CA as the default: % grid-default-ca -ca cd1186ff setting the default CA to: /DC=org/DC=Example/DC=Grid/CN=Example CA linking /etc/grid-security/certificates/grid-security.conf.cd1186ff to /etc/grid-security/certificates/grid-security.conf linking /etc/grid-security/certificates/grid-host-ssl.conf.cd1186ff to /etc/grid-security/certificates/grid-host-ssl.conf linking /etc/grid-security/certificates/grid-user-ssl.conf.cd1186ff to /etc/grid-security/certificates/grid-user-ssl.conf ...done. ENVIRONMENT VARIABLES
The following environment variables affect the execution of grid-default-ca: GRID_SECURITY_DIRECTORY Path to the default trusted certificate directory. X509_CERT_DIR Path to the default trusted certificate directory. GLOBUS_LOCATION Path to the Globus Toolkit installation directory. BUGS
The grid-default-ca program displays CAs from all of the directories in its search list; however, grid-cert-request only uses the first which contains a grid security configuration. The grid-default-ca program may display the same CA multiple times if it is located in multiple directories in its search path. However, it does not provide any information about which one would actually be used by the grid-cert-request command. SEE ALSO
grid-cert-request(1) AUTHOR
University of Chicago Globus Toolkit 5.0.1 03/22/2010 GRID-DEFAULT-CA(8)
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