HP (Hewlett-Packard) 9000 V2600 SCA ユーザーズマニュアル

HP-UX Operating System

extensions also provide system inquiry features for retrieving 
information about the current hardware topology, as well as thread and 
process inquiry features. Both traditional system architectures as well as 
SCA systems are supported by the HP-UX 11.10 enhancements.

HP-UX V11.10 SCA programming and launch features provide the 
following capabilities.

• Inquiry Features—Provide system hardware topology information, 

thread and process binding information, and thread and process 
launch policy information.

You can print or retrieve information about the system hardware 
configuration using the 

mpsched

 utility, the 

mpctl

 system call, and 

pthread library features. These interfaces also allow for retrieving 
information about thread and process bindings and launch policies.

• Targeting and Binding—Provide locality domain, processor, and 

memory targeting and binding.

You can specify the locality domain or processor on which a process 
runs by using the 

mpsched

 command, the 

mpctl

 system call, and the 

pthread interfaces 

pthread_processor_bind_np

 and 

pthread_ldom_bind_np

.

You also can specify the locality from which a process’ memory is 
allocated via the 

mmap

 and 

shmget

 system calls.

• Launch and Scheduling—Provide launch policies for threads and 

processes and support for “gang scheduling” of threads and processes.

You can set the launch policy for a process with the 

mpsched

 utility, 

the 

mpctl

 system call, and the pthread interface 

pthread_launch_policy_np

. The launch policies supported in HP-

UX 11.10 include the following.

• None—The system tries to launch threads and processes in a 

manner that provides the best performance, though applications 
should not rely on this providing any specific launch behavior. 
(This is the default policy for launching threads and processes.)

• Round Robin—Alternate among all localities until all localities 

have been selected once, then start over as needed.