Hi guys. I am trying to test my universities cluster using the Intel Linpack Benchmarking software. Let me say from the get-go that i am a Linux novice, and only recently learnt some Linux commands to have a play around, so if you can please keep the language simple
I have run a Linpack test as can be seen from the below terminal copy and paste. However, the test that i have currently run, i believe is just testing the avg GFLOPS for the current node i am on. What if i want to test the strength of a cluster of 3 nodes all working together? Would anyone happen to know what i would need to type in the command line in order to run a test on 3 nodes that i have logged into (all clustered by the university already). The nodes are all Xeon 64's, with 4 Gigs of ram each. Would really appreciate any help.
Code:
[******@beowulf linpack]$ ./xlinpack_xeon64
Input data or print help ? Type [data]/help :
Number of equations to solve (problem size): 20000
Leading dimension of array: 20000
Number of trials to run: 4
Data alignment value (in Kbytes): 4
Current date/time: Wed Apr 29 13:50:57 2009
CPU frequency: 3.400 GHz
Number of CPUs: 4
Number of threads: 4
Parameters are set to:
Number of tests : 1
Number of equations to solve (problem size) : 20000
Leading dimension of array : 20000
Number of trials to run : 4
Data alignment value (in Kbytes) : 4
Maximum memory requested that can be used = 3200404096, at the size = 20000
============= Timing linear equation system solver =================
Size LDA Align. Time(s) GFlops Residual Residual(norm)
Error: info returned = 1
20000 20000 4 237.211 22.4869 4.455000e-10 3.943651e-02
Error: info returned = 1
20000 20000 4 236.686 22.5368 4.455000e-10 3.943651e-02
Error: info returned = 1
20000 20000 4 235.285 22.6710 4.455000e-10 3.943651e-02
Error: info returned = 1
20000 20000 4 237.404 22.4686 4.455000e-10 3.943651e-02
Performance Summary (GFlops)
Size LDA Align. Average Maximal
20000 20000 4 22.5408 22.6710
End of tests
Last edited by Neo; 05-11-2009 at 05:15 PM..
Reason: code tags
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LEARN ABOUT CENTOS
ssl_ctx_sess_get_cache_size
SSL_CTX_sess_set_cache_size(3) OpenSSL SSL_CTX_sess_set_cache_size(3)NAME
SSL_CTX_sess_set_cache_size, SSL_CTX_sess_get_cache_size - manipulate session cache size
SYNOPSIS
#include <openssl/ssl.h>
long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx, long t);
long SSL_CTX_sess_get_cache_size(SSL_CTX *ctx);
DESCRIPTION
SSL_CTX_sess_set_cache_size() sets the size of the internal session cache of context ctx to t.
SSL_CTX_sess_get_cache_size() returns the currently valid session cache size.
NOTES
The internal session cache size is SSL_SESSION_CACHE_MAX_SIZE_DEFAULT, currently 1024*20, so that up to 20000 sessions can be held. This
size can be modified using the SSL_CTX_sess_set_cache_size() call. A special case is the size 0, which is used for unlimited size.
When the maximum number of sessions is reached, no more new sessions are added to the cache. New space may be added by calling
SSL_CTX_flush_sessions(3) to remove expired sessions.
If the size of the session cache is reduced and more sessions are already in the session cache, old session will be removed at the next
time a session shall be added. This removal is not synchronized with the expiration of sessions.
RETURN VALUES
SSL_CTX_sess_set_cache_size() returns the previously valid size.
SSL_CTX_sess_get_cache_size() returns the currently valid size.
SEE ALSO ssl(3), SSL_CTX_set_session_cache_mode(3), SSL_CTX_sess_number(3), SSL_CTX_flush_sessions(3)1.0.1e 2013-02-11 SSL_CTX_sess_set_cache_size(3)
04-29-2009
