Solaris SPARC speed issue Post: 302698705

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Operating Systems Solaris Solaris SPARC speed issue Post 302698705 by Pug on Monday 10th of September 2012 06:40:33 PM

09-10-2012

Registered User

Again, thank you for your responses.

So please let me clarify a few points to be sure.

1. 'hergp' is saying that if the issue is that they are using a T1 T2 type multi core SPARC than the issue is not so much the 32 vs 64 bit compile as it is the single threaded vs multi-threaded processing. Correct?
On Windows x86 vs X64 we found that the increase in compiling to X64 is just under 20% (comparing the running of one process on the same input data). Would you expect something similar on SPARC?

2. 'jlliagreis' saying that if it is possible to design our program to be multi-threaded (which I don't think we can) or if we run the program in parallel processes on different sets of data instead of in sequence, then we should be able to see some improvement. However, the amount will depend on the type of bottle neck we are experiencing (which we do not know yet). So for example, if it is straight CPU bound then we should see the best improvement, whereas if it is I/O bound then they may be less improvement, etc.

3. How do I know if we are running T1 or T2 with regard to floating point? I noticed that you said it is niagara based on the sun4v. How do I tell what T level they have?

4. What Solaris SPARC hardware would be better for doing this type of processing? I am not sure we have a choice but I am certainly curious.

---------- Post updated at 04:40 PM ---------- Previous update was at 09:38 AM ----------

One other things. They have two servers. One is a T2 and the other a T3 and specifically they are:SunOS 5.10 Generic_147440-09 sun4u sparc SUNW,Sun-Fire-V245 (T2)
SunOS 5.10 Generic_147440-01 sun4v sparc sun4v (T3)

What does this tell us about single thread / multi-thread or floating point etc?
How does sun4v differ from sun4u? How does T2 differ from T3?

Thank you.

Pug

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LEARN ABOUT HPUX

getrusage

getrusage(2)							System Calls Manual						      getrusage(2)

NAME

       getrusage - get information about resource utilization

SYNOPSIS

DESCRIPTION

       The  function  provides	measures  of  the resources used by the current process or its terminated and waited-for child processes.  If  the
       value of the who argument is information is returned about resources used by the current process. If the  value	of  the  who  argument	is
       information is returned about resources used by the terminated and waited-for children of the current process. If the child is never waited
       for (for instance, if the parent has set or sets to the resource information for the child process is discarded and  not  included  in  the
       resource information provided by The r_usage argument is a pointer to an object of type in which the returned information is stored.

       If  the current process is multi-threaded, returns the information about the resources used by all the active and the reaped threads/light-
       weight processes in the current process if the value of the who argument is If the value  of  the  who  argument  is  in  a  multi-threaded
       process, information returned is the same as it would be for a single-threaded process.

RETURN VALUE

       Upon successful completion, returns Otherwise, is returned, and is set to indicate the error.

ERRORS

       The function will fail if:

	      [EINVAL]	     The value of the who argument is not valid.

SEE ALSO

       exit(2), sigaction(2), time(1), times(2), wait(1), <sys/resource.h>.

																      getrusage(2)