Cluster:LLK Poster Structure - Revision history

Charliep at 00:08, 29 January 2006

2006-01-29T00:08:32Z

← Older revision		Revision as of 00:08, 29 January 2006
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	~~==Abstract==~~		Moved to CVS/LaTeX structure, see hopper:/cluster/projects/llk/poster/
	~~Network latency continues~~ to be a bottleneck for many computational science applications on Beowulf clusters. Using open source tools, we develop technology for making nanosecond precision measurements between timing points within the 2.6 Linux kernel. Using this technology, in conjunction with low-level and application benchmarks, we establish that there is significant network latency in the kernel and identify its origin. Lastly, we survey software-based latency reduction technologies and make recommendations based on our measurements. ([[Cluster:llk-siam-pp06-abstract\|original]])

	~~'''Keywords:'''~~

	~~==The Problem==~~
	~~===Overview===~~

	~~===Motivation===~~

	~~===Survey~~/~~Current State of Affairs===~~
	* Light, ~~detail in [[#Measurement_(Techniques)]].~~
	* Include dead ends here.
	* List of approaches.

	~~Places to look~~:
	* Beowulf archives
	* ACM
	* IEEE
	* Citeseer
	* Google Scholar
	* tp_timer
	* NIST

	~~==Design (of the Experiment, Methodology)==~~
	~~===Measurement (Techniques)===~~
	* TCP/~~IP stack time point placement~~
	* tp_timer
	* high res timing w/~~counters~~

	~~===Verification and Validation===~~
	*Verification is the demonstration that the model is logically correct and follows from the physical and mathematical laws used. For a computer simulation, verification shows that the specifications are fulfilled and that the model will run on the computer system as specified.

	*Validation is the demonstration that the model correctly predicts the phenomena modeled. This ensures that the model is based on good scientific methods and principles.

	~~===(Analysis) Tools===~~
	* /~~proc -> database~~
	* PHP/gnuplot visualization

	~~===Benchmarks===~~
	* netpipe (low level)
	* MrBayes (high level)

	~~==Results (of the Experiment)==~~
	~~(tabular, incl. test environment)~~

	~~==Analysis (Summary/Discussion~~/~~Conclusions)==~~

	~~==Future Work==~~

	~~==References==~~
	*source documents
	*bibtex/~~latex~~

Charliep: /* Verification and Validation */

2006-01-28T20:34:21Z

Verification and Validation

← Older revision		Revision as of 20:34, 28 January 2006
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	===Verification and Validation===		===Verification and Validation===
			*Verification is the demonstration that the model is logically correct and follows from the physical and mathematical laws used. For a computer simulation, verification shows that the specifications are fulfilled and that the model will run on the computer system as specified.

			*Validation is the demonstration that the model correctly predicts the phenomena modeled. This ensures that the model is based on good scientific methods and principles.

	===(Analysis) Tools===		===(Analysis) Tools===

Tmcnulty at 17:01, 28 January 2006

2006-01-28T17:01:23Z

← Older revision		Revision as of 17:01, 28 January 2006
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	* Citeseer		* Citeseer
	* Google Scholar		* Google Scholar
			* tp_timer
			* NIST

	==Design (of the Experiment, Methodology)==		==Design (of the Experiment, Methodology)==

Tmcnulty at 16:50, 28 January 2006

2006-01-28T16:50:32Z

← Older revision		Revision as of 16:50, 28 January 2006
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	==References==		==References==
			*source documents
			*bibtex/latex

Tmcnulty at 16:49, 28 January 2006

2006-01-28T16:49:01Z

← Older revision		Revision as of 16:49, 28 January 2006
Line 10:		Line 10:

	===Survey/Current State of Affairs===		===Survey/Current State of Affairs===
	* Light, detail in [[#~~Measurement~~ Techniques]].		* Light, detail in [[#Measurement_(Techniques)]].
	* Include dead ends here.		* Include dead ends here.
	* List of approaches.		* List of approaches.

Tmcnulty at 16:47, 28 January 2006

2006-01-28T16:47:50Z

← Older revision		Revision as of 16:47, 28 January 2006
Line 10:		Line 10:

	===Survey/Current State of Affairs===		===Survey/Current State of Affairs===
			* Light, detail in [[#Measurement Techniques]].
			* Include dead ends here.
			* List of approaches.

	Places to look:		Places to look:
	* Beowulf archives		* Beowulf archives
Line 17:		Line 21:
	* Google Scholar		* Google Scholar

	==Methodology==		==Design (of the Experiment, Methodology)==
	===Measurement (Techniques)===		===Measurement (Techniques)===
	* TCP/IP stack time point placement		* TCP/IP stack time point placement
Line 33:		Line 37:
	* MrBayes (high level)		* MrBayes (high level)

	==~~Test~~ Results==		==Results (of the Experiment)==
	(tabular, incl. test environment)		(tabular, incl. test environment)

	==Summary/Discussion/Conclusions==		==Analysis (Summary/Discussion/Conclusions)==

	==Future Work==		==Future Work==

	==References==		==References==

Tmcnulty: /* Benchmarks */

2006-01-28T16:35:19Z

Benchmarks

← Older revision		Revision as of 16:35, 28 January 2006
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	===Benchmarks===		===Benchmarks===
			* netpipe (low level)
			* MrBayes (high level)

	==Test Results==		==Test Results==

Tmcnulty at 16:32, 28 January 2006

2006-01-28T16:32:50Z

← Older revision		Revision as of 16:32, 28 January 2006
Line 1:		Line 1:
	==Abstract==		==Abstract==
	Network latency continues to be a bottleneck for many computational science applications on Beowulf clusters. Using open source tools, we develop technology for making nanosecond precision measurements between timing points within the 2.6 Linux kernel. Using this technology, in conjunction with low-level and application benchmarks, we establish that there is significant network latency in the kernel and identify its origin. Lastly, we survey software-based latency reduction technologies and make recommendations based on our measurements. ([[Cluster:llk-siam-pp06-abstract\|original]])		Network latency continues to be a bottleneck for many computational science applications on Beowulf clusters. Using open source tools, we develop technology for making nanosecond precision measurements between timing points within the 2.6 Linux kernel. Using this technology, in conjunction with low-level and application benchmarks, we establish that there is significant network latency in the kernel and identify its origin. Lastly, we survey software-based latency reduction technologies and make recommendations based on our measurements. ([[Cluster:llk-siam-pp06-abstract\|original]])

			'''Keywords:'''

	==The Problem==		==The Problem==
	===Overview===		===Overview===

	===Motivation===		===Motivation===

	===Survey/Current State of Affairs===		===Survey/Current State of Affairs===
	Places to look:		Places to look:
Line 11:		Line 16:
	* Citeseer		* Citeseer
	* Google Scholar		* Google Scholar

	==Methodology==		==Methodology==
	===Measurement (Techniques)===		===Measurement (Techniques)===
	~~====High Res Timing~~ w/~~Counters====~~		* TCP/IP stack time point placement
			* tp_timer
			* high res timing w/counters

	===Verification and Validation===		===Verification and Validation===
	===Analysis===
			===(Analysis) Tools===
			* /proc -> database
			* PHP/gnuplot visualization

	===Benchmarks===		===Benchmarks===

	==Test Results==		==Test Results==
	(tabular, incl. test environment)		(tabular, incl. test environment)

	==Summary/Discussion/Conclusions==		==Summary/Discussion/Conclusions==

	==Future Work==		==Future Work==

	==References==		==References==

Tmcnulty at 16:20, 28 January 2006

2006-01-28T16:20:30Z

← Older revision		Revision as of 16:20, 28 January 2006
Line 1:		Line 1:
	==Abstract==		==Abstract==
			Network latency continues to be a bottleneck for many computational science applications on Beowulf clusters. Using open source tools, we develop technology for making nanosecond precision measurements between timing points within the 2.6 Linux kernel. Using this technology, in conjunction with low-level and application benchmarks, we establish that there is significant network latency in the kernel and identify its origin. Lastly, we survey software-based latency reduction technologies and make recommendations based on our measurements. ([[Cluster:llk-siam-pp06-abstract\|original]])
	==The Problem==		==The Problem==
	===Overview===		===Overview===
	===Motivation===		===Motivation===
	===Survey/Current State of Affairs===		===Survey/Current State of Affairs===
			Places to look:
	* Beowulf archives		* Beowulf archives
	* ACM		* ACM

Tmcnulty at 16:17, 28 January 2006

2006-01-28T16:17:38Z

New page

==Abstract==
==The Problem==
===Overview===
===Motivation===
===Survey/Current State of Affairs===
* Beowulf archives
* ACM
* IEEE
* Citeseer
* Google Scholar
==Methodology==
===Measurement (Techniques)===
====High Res Timing w/Counters====
===Verification and Validation===
===Analysis===
===Benchmarks===
==Test Results==
(tabular, incl. test environment)
==Summary/Discussion/Conclusions==
==Future Work==
==References==