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Full Discussion: Accelerated computing / GPUs
Special Forums UNIX and Linux Applications High Performance Computing Accelerated computing / GPUs Post 302793751 by figaro on Saturday 13th of April 2013 12:08:02 PM
Old 04-13-2013
Data Accelerated computing / GPUs

There are plenty of sources that explain the performance per watt of a computer. However, I wanted to investigate how accelerated computer components (notably GPUs) have become more efficient at a lower price over the years. I have thus defined a metric: performance per watt per price-unit, and plotted these by launch date and launch price.
The results are as follows:

Image

Notes:
  • GFLOPS are single precision
  • Prices are in euro as they were approximately at launch date; if no launch price is known, it has not been proxied with a current price and no plot point is shown
  • Data taken mostly from Comparison of Nvidia graphics processing units - Wikipedia, the free encyclopedia and collection started from the advent of multi-core GPU architectures. The choice of Nvidia was made, because of our professional interest in deploying CUDA and does not constitute an endorsement.
  • Data is on retail components as opposed to OEM components.
  • Launch prices are often artificially high, because it is the feature set that appeals to the enthusiasts who are also the first movers. The price degradation over time (loosely 10% per year) has not been taken into account.
  • The last two plot points are the GeForce GTX Titan and GeForce GTX 650 Ti Boost.

So while performance per watt has increased more than 5-fold over the observed period, the performance per watt per price-unit has not kept up accordingly: almost 4-fold.

In fact, there is even an inverse relationship between the number of cores and the performance metric:

Image

Perhaps the high end cards do not drop in price as much and maintain their price level at launch to finance the development of the lower end cards.
 

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PAC(8)							    BSD System Manager's Manual 						    PAC(8)

NAME
pac -- printer/plotter accounting information SYNOPSIS
pac [-Pprinter] [-c] [-m] [-pprice] [-s] [-r] [name ...] DESCRIPTION
The pac utility reads the printer/plotter accounting files, accumulating the number of pages (the usual case) or feet (for raster devices) of paper consumed by each user, and printing out how much each user consumed in pages or feet and dollars. Options and operands available: -Pprinter Accounting is done for the named printer. Normally, accounting is done for the default printer (site dependent) or the value of the environment variable PRINTER is used. -c Cause the output to be sorted by cost; usually the output is sorted alphabetically by name. -m Cause the host name to be ignored in the accounting file. This allows for a user on multiple machines to have all of his printing charges grouped together. -pprice The value price is used for the cost in dollars instead of the default value of 0.02 or the price specified in /etc/printcap. -r Reverse the sorting order. -s Accounting information is summarized on the summary accounting file; this summarization is necessary since on a busy system, the accounting file can grow by several lines per day. names Statistics are only printed for user(s) name; usually, statistics are printed for every user who has used any paper. FILES
/var/account/?acct raw accounting files /var/account/?_sum summary accounting files /etc/printcap printer capability data base SEE ALSO
printcap(5) HISTORY
The pac utility appeared in 4.0BSD. BUGS
The relationship between the computed price and reality is as yet unknown. BSD
June 6, 1993 BSD
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