01-28-2010
HPC can mean anything you want it to be.
In general "High Performance" is relative to the state-of-the-art.
What is "High Performance" today is generally "Old Hat", 5 years from now....
This User Gave Thanks to Neo For This Post:
6 More Discussions You Might Find Interesting
1. AIX
Hello everybody.
I have a problem with my AIX 5.3. Recently my unix shows a high cpu utilization with sar or topas.
I need to find what I have to do to solve this problem, in fact, I don't know what is my problem.
I had the same problem with another AIX 5.3 running the same... (2 Replies)
Discussion started by: wilder.mellotto
2 Replies
2. High Performance Computing
A lightweight scheduler that supports high-throughput computing (HTC) applications on Blue Gene/P. (NEW: 06/12/2008 in grid)
More... (0 Replies)
Discussion started by: Linux Bot
0 Replies
3. High Performance Computing
I am interested in setting up some High Performance Computing clusters and would like to get people's views and experiences on this.
I have 2 requirements:
1. Compute clusters to do fast cpu intensive computations
2. Storage clusters of parallel and extendable filesystems spread across many... (6 Replies)
Discussion started by: humbletech99
6 Replies
4. High Performance Computing
hello everyone ,
Im new to HPL. i wanted to know whether High performance linpack solves linear
system of equations for single precision airthmatic on LINUX.
it works for double precision , so is there any HPL version which is for single precision.\
thanks . (0 Replies)
Discussion started by: rahul_viz
0 Replies
5. Emergency UNIX and Linux Support
I've just been handed a hot potato from a colleague who left :(... our client has been complaining about slow performance on one of our servers.
I'm not very experienced in investigating performance issues so I hoping someone will be so kind to provide some guidance
Here is an overview of the... (8 Replies)
Discussion started by: Solarius
8 Replies
6. High Performance Computing
I'm trying to compile Linpack on a Ubuntu cluster. I'm running MPI. I've modified the following values to fit my system TOPdir MPdir LAlib CC LINKER.
When compiling I get the following error: (the error is at the end, the other errors in between are because I've ran the script several times so... (0 Replies)
Discussion started by: JPJPJPJP
0 Replies
LEARN ABOUT CENTOS
pmtrimnamespace
PMTRIMNAMESPACE(3) Library Functions Manual PMTRIMNAMESPACE(3)
NAME
pmTrimNameSpace - prune a performance metrics name space
C SYNOPSIS
#include <pcp/pmapi.h>
int pmTrimNameSpace(void);
cc ... -lpcp
DESCRIPTION
If the current Performance Metrics Application Programming Interface (PMAPI) context corresponds to a version 1 archive log of Performance
Co-Pilot (PCP) performance metrics (as collected by pmlogger(1) -V1), then the currently loaded Performance Metrics Name Space (PMNS), is
trimmed to exclude metrics for which no description can be found in the archive. The PMNS is further trimmed to remove empty subtrees that
do not contain any performance metric.
Since PCP archives usually contain some subset of all metrics named in the default PMNS, pmTrimNameSpace effectively trims the applica-
tion's PMNS to contain only the names of the metrics in the archive.
Since PCP 2.0, pmTrimNameSpace is only needed for dealing with version 1 archives. Version 2 archives actually store the "trimmed" PMNS.
Prior to any trimming, the PMNS is restored to the state as of the completion of the last pmLoadASCIINameSpace(3) or pmLoadNameSpace(3), so
the effects of consecutive calls to pmTrimNameSpace with archive contexts are not additive.
If the current PMAPI context corresponds to a host and a pmLoadASCIINameSpace(3) or pmLoadNameSpace(3) call was made, then the PMNS reverts
to all names loaded into the PMNS at the completion of the last pmLoadASCIINameSpace(3) or pmLoadNameSpace(3), i.e. any trimming is undone.
On success, pmTrimNameSpace returns zero.
SEE ALSO
pmlogger(1), PMAPI(3), pmLoadASCIINameSpace(3), pmLoadNameSpace(3), pmNewContext(3) and pmns(5).
DIAGNOSTICS
PM_ERR_NOPMNS
you must have loaded a PMNS using pmLoadASCIINameSpace(3) or pmLoadNameSpace(3) before calling pmTrimNameSpace
PM_ERR_NOCONTEXT
the current PMAPI context is invalid
Performance Co-Pilot PCP PMTRIMNAMESPACE(3)