[parsec-users] Benchmarks which do significant amount of IO

Christian Bienia cbienia at CS.Princeton.EDU
Mon Aug 17 16:50:37 EDT 2009


Bodytrack performs some I/O during the execution but 40-45% CPU utilization
seems awfully low. With such a low utilization the program should not scale
much beyond a speedup of 2, but the latest version scales almost linearly to
about 8+. Maybe you're running the program from a busy network filesystem?
Try to execute the program from a local disk or even from a memory disk by
giving the correct path to parsecmgmt with the `-d' option.

 

- Chris

 

 

From: parsec-users-bounces at lists.cs.princeton.edu
[mailto:parsec-users-bounces at lists.cs.princeton.edu] On Behalf Of Kotecha,
Grishma
Sent: Monday, August 17, 2009 1:09 PM
To: PARSEC Users
Subject: Re: [parsec-users] Benchmarks which do significant amount of IO

 

Hi 

 

I have a question related to this:

 

When I run Bodytrack and observe CPU utilization, I see it does not get
fully utilized (it gives performance somewhere near 40-45%).

 

Is lot of memory read/write a reason for this?

 

 

Grishma 

  _____  

From: parsec-users-bounces at lists.cs.princeton.edu
[mailto:parsec-users-bounces at lists.cs.princeton.edu] On Behalf Of Vishal
Ahuja
Sent: Monday, August 17, 2009 10:00 AM
To: parsec-users at lists.cs.princeton.edu
Subject: [parsec-users] Benchmarks which do significant amount of IO

 

Hi,

       Can someone please point out the benchmark programs which do a
significant amount of io (disk read/write).

Thanks.

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