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Full Discussion: Performance Equation
Special Forums UNIX and Linux Applications High Performance Computing Performance Equation Post 302414230 by chamila1986 on Monday 19th of April 2010 02:18:36 PM
Old 04-19-2010
Data Performance Equation

I'm running a MPI program using a cluster of 4 machines(different machines of different processing power,cpu utilization etc.). I'm trying to balance the computation among the machine to get the minimum execution time for that. I tried to balance it by creating a threshold value by taking the load averages of each machines. I used the followning equating to generate thresholds for each machine in the cluster,

node i's threshold value= total_load_average_of_all_machines / load_average_of_node_i

But it took much time compared to typical running scenario.



Can anybody tell me a equation for generation threshold value for the nodes in the cluster that can be applicable for load balancing scenarios like above...

If u have any idea Sir/Madam, please be kind enough to reply this post. Thank you.
 

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VOTEQUORUM_LEAVING(3)				    Corosync Cluster Engine Programmer's Manual 			     VOTEQUORUM_LEAVING(3)

NAME
votequorum_leaving - Tell other nodes that we are leaving the cluster SYNOPSIS
#include <corosync/votequorum.h> int votequorum_leaving(votequorum_handle_t handle); DESCRIPTION
The votequorum_leaving function is used to tell the other nodes in the cluster that this node is leaving. They will (when the node actually leaves) reduce quorum to keep the cluster running without this node. This function should only be called if it is known that the node is being shut down for a known reason and could be out of the cluster for an extended period of time. Normal behaviour is for the cluster to reduce the total number of votes, but NOT expected_votes when a node leave the cluster, so the clus- ter could become inquorate. This is correct behaviour and is ther eto prevent split-brain. Do NOT call this function unless you know what you are doing. RETURN VALUE
This call returns the CS_OK value if successful, otherwise an error is returned. ERRORS
The errors are undocumented. SEE ALSO
votequorum_overview(8), votequorum_initialize(3), votequorum_finalize(3), votequorum_dispatch(3), votequorum_fd_get(3), corosync Man Page 2009-01-26 VOTEQUORUM_LEAVING(3)
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