... GPU¹

Global Processing Unit or Gnutella Processing Unit

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... computers²

see 4.3 for an estimation of this number

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... clients³

although most Gnutella clients drop GPU strings because they are too long

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... neighborhood⁴

although this could be changed with the Network Mapper, see section 6.6 for more details

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... algorithm⁵

The plugin that solves the discrete logarithm problem in GPU (crypto.dll as presented in [3]) uses a modified version of the baby step-giant step algorithm that underwent modifications described above. It was developed before the author was aware of the Pollard-Rho algorithm.

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... node⁶

the degree of a node

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...⁷

In Gnutella, duplicates are thrown away: packets travel through the shortest path

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... TTL⁸

see also the Benchmark section for the line topology

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... frontend⁹

The autoupdate routines are implemented as a frontend that sends a little shutdown message to GPU. Doing so, it is possible to overwrite the GPU executable without getting errors.

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... busy¹⁰

the gpustatus request has high priority and is always answered even if a GPU is computing with all three available threads.

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... graph¹¹

a 2D graph would suffice for our purposes, but we wanted something nice to look at

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... nodes¹²

to be measured by a ping command, for example

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... request¹³

status request functionality is implemented since version 0.827

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... 20000¹⁴

a port is a number between 0 and 65535, processes listen for incoming packets on particularly defined ports

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... connections¹⁵

a remedy can be found at http://www.dyndns.org, that equips a server with dynamic DNS update

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