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.
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
Sorry, I am not really from a computer science background. But from the subject of it, does it mean something like multi processor programming? distributed computing? like using erlang? Sound like it, which excite me. I just had a 3 day crash course in erlang and "Cocurrency oriented programming"... (7 Replies)
Discussion started by: linuxpenguin
7 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 OPENSOLARIS
chosts
chosts(1M) System Administration Commands chosts(1M)
NAME
chosts - expand cluster names into host names
SYNOPSIS
$CLUSTER_HOME/bin/chosts name [name...]
DESCRIPTION
The chosts utility expands the arguments into a list of host names.
OPERANDS
The following operands are supported:
name The parameter name can be a hostname or a cluster name. If name is a hostname, it is expanded to be a hostname. If name
is a cluster name, that is, an entry exists in the /etc/clusters database (or a NIS or NIS+ map), it is expanded into
the list of hosts that make up that cluster, as specified in the database. The list is typically used by programs that
wish to operate on a list of hosts.
If an entry for clusters has been made in the /etc/nisswitch.conf file, then the order of lookups is controlled by that
entry. If there is no such file or no such entry, then the nameservice look up order is implicitly nis files.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWccon |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
SEE ALSO
ccp(1M), cconsole(1M), cports(1M), crlogin(1M), cssh(1M), ctelnet(1M), clusters(4), attributes(5)
Sun Cluster 3.2 8 Sep 2007 chosts(1M)