| [419] | 1 | (* This is a very complex jgraph picture used in a paper on checkpointing.
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| 2 | Basically, it is a graphic representation of four checkpointing algorithms.
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| 3 |
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| 4 | The four algorithms are in the files seq.jgr, conc.jgr, cow.jgr, and
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| 5 | cll.jgr. This file lays those four algorithms out on the page, gives
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| 6 | them titles, and then draws a legend at the bottom. It ends up calling
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| 7 | the shell construct 24 times, forking off 72 processes, which might seem
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| 8 | like a lot, but it only takes 9 seconds to produce the output on a
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| 9 | DECstation 5000.
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| 10 |
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| 11 | Note that in this file, the y-axis if the drawings is shrunk, so that
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| 12 | they all fit better on the page.
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| 13 | *)
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| 14 |
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| 15 | include seq.jgr
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| 16 | yaxis size 1.5
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| 17 | title y -.5 : Sequential Algorithm
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| 18 | x_translate -1.5
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| 19 | y_translate 2.5
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| 20 |
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| 21 | include conc.jgr
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| 22 | yaxis size 1.5
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| 23 | x_translate 1.5
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| 24 | y_translate 2.5
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| 25 | title y -.5 : Main Memory Algorithm
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| 26 |
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| 27 | include cow.jgr
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| 28 | yaxis size 1.5
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| 29 | title y -.5 : Copy-on-write Algorithm
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| 30 | x_translate -1.5
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| 31 |
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| 32 | include cll.jgr
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| 33 | yaxis size 1.5
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| 34 | title y -.5 : CLL Algorithm
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| 35 | x_translate 1.5
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| 36 |
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| 37 | newgraph
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| 38 | y_translate -1.9
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| 39 | x_translate -1
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| 40 | xaxis max 2 min 0 size 2 nodraw
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| 41 | yaxis max 2 min 0 size 2 nodraw
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| 42 |
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| 43 | newline linetype solid rarrow asize .07 .04 label fontsize 10
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| 44 | : Bytes copied / written when all processors are frozen
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| 45 | newline linetype dotted rarrow asize .07 .04 label fontsize 10
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| 46 | : Bytes copied / written after the processors are restarted
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| 47 | newline linetype longdash rarrow asize .07 .04 label fontsize 10
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| 48 | : Bytes written after the main memory checkpoint is complete
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| 49 |
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| 50 | legend on x 0 y 1
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| 51 | linelength 1
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