how to know SMP or MPP or CLUSTER or GRID

[karthi_gana]

All,

is there a way to identify the server (without asking the ADMIN team) is SMP/MPP/CLUSTER/GRID?

i can see 3 nodes in the director log.

Code: Select all

main_program: APT configuration file: /opt/IBM/InformationServer/Server/Configurations/default.apt
{
	node "node1"
	{
		fastname "xxxx.com"
		pools ""
		resource disk "/node1/res" {pools ""}
		resource scratchdisk "/node1/scratch" {pools ""}
	}
	node "node2"
	{
		fastname "xxxx.com"
		pools ""
		resource disk "/node2/res" {pools ""}
		resource scratchdisk "/node2/scratch" {pools ""}
	}
	node "node3"
	{
		fastname "xxxx.com"
		pools ""
		resource disk "/node3/res" {pools ""}
		resource scratchdisk "/node3/scratch" {pools ""}
	}
}

can i get the required information from this?

[pandeesh]

If it is Grid, you can easily identify in the log. There will be a script called "DynamicGrid.sh" which will dynamically allocate the resources.

[priyadarshikunal]

also the fast name is the server hostname if there are different fastnames that means there are multiple servers involved. Also there will be a conductor node in case of Cluster/Grid.

[karthi_gana]

yes. The "fastnames" are different only. so it means there are three server involved.

On what basis nodes are added ? i mean how should i decide the node count to add it in a particula servar? Say for example, I have one node for each server. if i want to add two node for a server, can we just add it? or do we need to consider some parameters before adding new nodes?

[PaulVL]

Also the "default.apt" indicates that it was not dynamically generated, so that rules out GRID.

Why do you not want to ask your admin team?

As an admin I WANT / BEG new developpers to introduce themselves and ask questions on the environment. I'd much rather see someone come to me with a question than someone go down the wrong path because they did not.

[ray.wurlod]

Every node you add increases spot processing load (number of processes). That's the main "parameter" you need to consider.

Too many nodes can be counter productive. For a silly example, eight nodes to process one row equals seven idle nodes, but the processes all still need to be started. For a less silly example, if you partition on gender all but two nodes will be idle (except, perhaps, in California).

[karthi_gana]

what kind of actitivities will be stored in resource disk? first of all, what is mean by resource disk? It is is a kind of Hard Disk. Am i corect?


As for as i know, the lookup data will be stored in scratch disk. Right?

It is a kind of RAM? Am i correct?

[qt_ky]

Both resource types point to paths, so yes they are on disk, not in memory.

Please consult the Parallel Job Developer's Guide chapter "The Parallel engine configuration file" for details.