MATLAB DISTRIBUTED COMPUTING SERVER 4 - SYSTEM ADMINISTRATORS GUIDE Bedienungsanleitung PDF herunterladen (Seite 24)

2 Network Administration

Ephemeral TCP Po

rts with Job Manager

If you use the job

manager on a cluster of nodes running Windows operating

systems, you mus

t make sure that a large number of ephemeral TCP ports

are available on

the job manager machine. By default, the maximum valid

ephemeral TCP p

ort number on a Windows operating system is 5000, but

transfers of la

rge data sets might fail if this setting is not increased. In

particular, if

your cluster has 32 or more workers, you should increase the

maximum valid

ephemeral TCP port number using the following procedure:

1 Start the Regi

stry Editor.

2 Locate the following subkey in the registry, and click Parameters:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

3 On the Registry Editor window, select Edit > New > DWORD Value.

4 In the list of entries on the right, change the new value name to

MaxUserPort and press Enter.

5 Right-click

on the MaxUserPort entry name and select Modify.

6 In the Edit DWORD Value dialog, enter 65534 in the Value data Þeld.

Select Decimal for the Base value. Click OK.

This parameter controls the maximum port number that is used when

a program requests any available user port from the system. Typically,

ephemeral (short-lived) ports are allocated between the values of 1024 and

5000 inclusive. This action allows allocation for port numbers up to 65534.

7 Quit the Reg

istry Editor.

8 Reboot your machine.

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MATLAB DISTRIBUTED COMPUTING SERVER 4 - SYSTEM ADMINISTRATORS GUIDE Bedienungsanleitung Seite 24