Making things run faster Post: 302249129

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Top Forums UNIX for Advanced & Expert Users Making things run faster Post 302249129 by shamrock on Monday 20th of October 2008 05:11:09 PM

10-20-2008

Registered User

Quote:

Originally Posted by Legend986

@matrixmadhan: Thanks a lot... I have used an almost similar approach from your script but slightly adapted for my own datasets. I will try timing both the approaches and will paste the result here.

And one more thing: I have found this really cool package called xjobs. Would you mind taking a look at it? It basically handles the master part from your logic and is very useful. Thought you might find some use out of it too. You can access it here: xjobs

@shamrock: Again, thank you for clarifying the issue. I just didn't know if it was really RAID not JBOD because the CPU is spending 88% of its time waiting (taken from the mpstat command) which seemed really weird to me.

@bakunin: Thank You for the advice. I actually agree with you as that was my experience too. I switched to PERL after a really bad experience with awk. Blame it on my lack of expertise in them. Other than that, I am still using awk and sed whenever things can be done easily.

How many mpus are there in your machine?
The reason the mpu is spending so much time waiting is because the terrabytes of data being processed...I/O wait.

shamrock

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LEARN ABOUT MOJAVE

glgetmultisamplefv

GLGETMULTISAMPLEFV(3G)						    OpenGL 3.3						    GLGETMULTISAMPLEFV(3G)

NAME

       glGetMultisamplefv - retrieve the location of a sample

C SPECIFICATION

       void glGetMultisamplefv(GLenum pname, GLuint index, GLfloat *val);

PARAMETERS

       pname
	   Specifies the sample parameter name.  pname must be GL_SAMPLE_POSITION.

       index
	   Specifies the index of the sample whose position to query.

       val
	   Specifies the address of an array to receive the position of the sample.

DESCRIPTION

       glGetMultisamplefv queries the location of a given sample.  pname specifies the sample parameter to retrieve and must be
       GL_SAMPLE_POSITION.  index corresponds to the sample for which the location should be returned. The sample location is returned as two
       floating-point values in val[0] and val[1], each between 0 and 1, corresponding to the x and y locations respectively in the GL pixel space
       of that sample. (0.5, 0.5) this corresponds to the pixel center.  index must be between zero and the value of GL_SAMPLES - 1.

       If the multisample mode does not have fixed sample locations, the returned values may only reflect the locations of samples within some
       pixels.

ERRORS

       GL_INVALID_ENUM is generated if pname is not one GL_SAMPLE_POSITION.

       GL_INVALID_VALUE is generated if index is greater than or equal to the value of GL_SAMPLES.

SEE ALSO

       glGenFramebuffers(), glBindFramebuffer()

COPYRIGHT

       Copyright (C) 2010 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication
       License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

OpenGL 3.3							    03/08/2011						    GLGETMULTISAMPLEFV(3G)