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Full Discussion: High Performance Computing
Special Forums UNIX and Linux Applications High Performance Computing High Performance Computing Post 302257409 by spirtle on Wednesday 12th of November 2008 04:54:22 AM
Old 11-12-2008
Think carefully about what sort of problems you want to solve, e.g.
parallel computation or task farming?
If the former, then are the communications latency-bound or bandwidth-bound? Are collective communications important? Will you need full switching for remote comms, or just nearest-neighbour?
CPU-bound or memory-bound or IO-bound?

These factors are not necessarily mutually exclusive and Inevitably there are trade-offs, but one size does not fit all.
 

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PMDAPOSTGRESQL(1)					       Performance Co-Pilot						 PMDAPOSTGRESQL(1)

NAME
pmdapostgresql - PostgreSQL database PMDA DESCRIPTION
pmdapostgresql is a Performance Co-Pilot PMDA which extracts live performance data from a running PostgreSQL database. INSTALLATION
pmdapostgresql uses a configuration file from (in this order): o /etc/pcpdbi.conf o $PCP_PMDAS_DIR/postgresql/postgresql.conf This file can contain overridden values (Perl code) for the settings listed at the start of pmdapostgresql.pl, namely: o database name (see DBI(3) for details) o database username Once this is setup, you can access the names and values for the postgresql performance metrics by doing the following as root: # cd $PCP_PMDAS_DIR/postgresql # ./Install If you want to undo the installation, do the following as root: # cd $PCP_PMDAS_DIR/postgresql # ./Remove pmdapostgresql is launched by pmcd(1) and should never be executed directly. The Install and Remove scripts notify pmcd(1) when the agent is installed or removed. FILES
/etc/pcpdbi.conf configuration file for all PCP database monitors $PCP_PMDAS_DIR/postgresql/postgresql.conf configuration file for pmdapostgresql $PCP_PMDAS_DIR/postgresql/Install installation script for the pmdapostgresql agent $PCP_PMDAS_DIR/postgresql/Remove undo installation script for the pmdapostgresql agent $PCP_LOG_DIR/pmcd/postgresql.log default log file for error messages from pmdapostgresql SEE ALSO
pmcd(1), pmdadbping.pl(1) and DBI(3). 3.8.10 Performance Co-Pilot PMDAPOSTGRESQL(1)
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