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Topic: Unrolled linked list


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In the News (Mon 21 Dec 09)

  
 Unrolled linked list - Wikipedia, the free encyclopedia
It is related to the skip list and the B-tree.
A position in the list is indicated by both a reference to the node and a position in the elements array.
Unrolled linked lists also perform sequential traversal much more rapidly, due to their cache behavior: iterating through an ordinary linked list of n elements triggers n cache misses in the worst case, and about 2nv/m in the best case, assuming v and s are about the same size.
en.wikipedia.org /wiki/Unrolled_linked_list   (776 words)

  
 C Parametrized Lists
When implementing a list only dealing with link fields, it does not matter at all what it is the element type contained in the list, because every algorithm only deals with the linked fields.
For example, should a list of integers be needed, then the programmer must come up with a structure that includes the integer value and the link field for the list, as it is done in Figure 7 (the complete declaration and implementation for this type are shown in Listing 3 and Listing 4).
Lists are implemented having link fields pointing to one another.
www.di-mare.com /adolfo/p/c-list.htm   (4830 words)

  
 Linked list - Wikipedia, the free encyclopedia
Each node has two links: one points to the previous node, or points to a null value or empty list if it is the first node; and one points to the next, or points to a null value or empty list if it is the final node.
The linked list is relocatable, meaning it can be moved about in memory at will, and it can also be quickly and directly serialized for storage on disk or transfer over a network.
It is possible to create additional linked lists of elements that use internal storage by using external storage, and having the cells of the additional linked lists store references to the nodes of the linked list containing the data.
en.wikipedia.org /wiki/Linked_list   (5517 words)

  
 Developing for Developers : Unrolled linked lists   (Site not responding. Last check: 2007-10-13)
Today I'll be discussing unrolled linked lists, a simple variant of the linked list which has many of its desirable properties but exploits the cache to yield considerably better performance on modern PCs.
In simple terms, an unrolled linked list is a linked list of small arrays, all the same size N. Each is small enough that inserting or deleting from it is quick, but large enough so that it fills a cache line.
Even in the worst case, this can be competitive with ordinary linked lists, which require at least one and as many as four or five words of overhead per element.
blogs.msdn.com /devdev/archive/2005/08/22/454887.aspx   (1075 words)

  
 ScienceDaily: List of data structures   (Site not responding. Last check: 2007-10-13)
For a wider list of terms, see list of terms relating to algorithms and data structures.
Other structures such as "linked list" and "stack" cannot easily be defined this way because there are specific operations associated with them.
List of data structures -- This is a list of data...
www.sciencedaily.com /encyclopedia/List_of_data_structures   (1239 words)

  
 United States Patent: 4,667,290
The processor of claim 21 and further including means for linking machine language instruction data so as to allow high level language source code data written in any of a plurality of high level languages to include calls to high level language source code data written in any of said plurality of high level languages.
To represent lists, it is necessary to use nodes that may have an arbitrary number of subtrees--these are referred to as n.sub.-- ary nodes.
For an n.sub.-- ary node, a list head operator (the name of the list node) is followed by the prefix form of the list elements (children), and followed by a list end operator.
www.goss.com /ptfull.htm   (14908 words)

  
 La-Lm
A list of words and index entries is input to the program and it indexes every word from the list that occurs in a document.
list environment with an optional argument which determines the style in which the counter is printed.
The reference handling in the reference list and text is aimed to be in accordance with the requirements of all these journals.
stommel.tamu.edu /~baum/linuxlist/linuxlist/node29.html   (11233 words)

  
 Optimize Options - Using the GNU Compiler Collection (GCC)
Unroll loops whose number of iterations can be determined at compile time or upon entry to the loop.
Unroll all loops, even if their number of iterations is uncertain when the loop is entered.
The maximum number of instructions biased by probabilities of their execution that a loop should have if that loop is unrolled, and if the loop is unrolled, it determines how many times the loop code is unrolled.
gcc.gnu.org /onlinedocs/gcc-4.0.1/gcc/Optimize-Options.html   (6958 words)

  
 Software Reuse ... through Views
Some data structures that might be regarded as a single concept, such as a linked list, involve several types: a linked list has a record type and a pointer type.
Next is a list of names and specifications that are to be matched against the concrete type; following that is a pattern for the output cluster, which is instantiated by substitution of the values determined from the first part.
For example, a symbol table might be constructed using an array of buckets, where the array is indexed by the first character of a symbol and each array element is a pointer to a bucket, i.e., a sorted linked list of symbols.
www.cs.utexas.edu /users/novak/tose97.html   (10706 words)

  
 Manpage of pgCC
The old (cfront-compatible) scoping rules mean the declaration is in the scope to which the for statement itself belongs; the new (standard-conforming) rules in effect wrap the entire for statement in its own impicitly generated scope.
Generate a list of make dependences and print them to the file file.d, where file is the root name of the file under compilation.
Link in the Large File Support routines available on Linux versions later than Red hat 7.0 or SuSE 7.1.
www.dartmouth.edu /~rc/HPC/man/pgCC.html   (5633 words)

  
 PostgreSQL: Developer's Frequently Asked Questions (FAQ) for PostgreSQL
Lists are groups of Nodes chained together as a forward-linked list.
It is important to note that i is a List *, not the data in the List element.
List's are unrolled into nodes, and nodes are printed in detail.
www.postgresql.org /files/documentation/faqs/FAQ_DEV.html   (4765 words)

  
 [No title]
The input/output lists for a given loop are anchored in the LSG I-node corresponding to that loop, and are updated when the loop body changes, e.g., due to a loop distribution or loop fusion transformation.
Each input/output list has two levels and is structured as a linked list of variables at the top level.
For each variable in the top-level list, there is a second-level list of references to the variable in the loop.
www.research.ibm.com /journal/rd/413/sarkar.txt   (13527 words)

  
 Wingy's Snow MOO Programming Cheat Sheet
The < replacements > list is always nine items long, each item itself being a list of two numbers, the start and end indices in < subject > matched by some parenthesized sub-pattern of < pattern >.
This list is used in determining which groups are valid for registration, and should be run regularly.
Returns objlist (which should be a list of objects) stripped of all objects not descended from `include_classes' or descended from `exclude_classes'.
www.efn.org /~bruce_l/snowmoocheat.html   (9023 words)

  
 List History, Curious Games
:-) The first two links are game conventions I have a hand in, KublaCon and Seattle Game Con, while the third is my fan site for a band I enjoy - Dead Can Dance.
For other retailers thinking about picking us up, some benefits are: you get to be on the front page and in the "Links" sections AND coming soon - a "Ready-to-Run" Tournament Bundle, available in the For Retailers section.
Additionally, the product links are not yet working...
www.curiousgames.net /listhistory.html   (1836 words)

  
 Charm++: conv-core/memory-gnu.c Source File   (Site not responding. Last check: 2007-10-13)
People report that the macro 00555 versions are faster than libc versions on some systems.
Briefly, supported 00952 parameters are as follows (listed defaults are for "typical" 00953 configurations).
This will be greater 00980 than current total if trimming has occurred.
charm.cs.uiuc.edu /doxygen/charm/memory-gnu_8c-source.html   (6413 words)

  
 Compression synchronization and optimization - RunUO Gaming Network
Your buffers are not realistic to begin with as they do not even resemble UO packets that would be compressed as my test suite uses the Mobile's object property list packet.
Also, algorithms that are effective in C and unsafe C# are not necessarily the one that will be most effective in safe C# (yet, I don't deny unsafe have the possibility to be way faster).
It works by keeping internally a linked list of free chunks of memory, and when a block of ram is requested, it traverses the list looking for a chunk large enough.
www.runuo.com /forums/showthread.php?t=48375   (3145 words)

  
 C (FAQ, abridged)
Note that the parentheses around printf's argument list are in the macro call, not the definition.
A: In variable-length argument lists, types char and short int are promoted to int, and float is promoted to double.
A: It's a devastatingly deviously unrolled byte-copying loop.
www.rz.go.dlr.de:8081 /info/faqs/programming/C-faq.abridged.html   (8409 words)

  
 Techniques for Scientific C++
Separate versions of the list code will be generated for both A and B, even though most of it will be identical (for example, when you are traversing a list you usually don't care about how the data was allocated).
Here's a partial list of some of the refinements people have implemented: type promotion, glommable expression templates, loop nest optimizations (tiling, loop interchange, unrolling,...) stack iterators for multidimensional arrays, updaters, pretty-printing, unit stride optimizations, shape conformance checking, loop collapsing, pattern matching, index placeholders, tensor notation, reductions, etc. etc.
This version will run at peak speed: unrolling exposes low-level parallelism and removes loop overhead; and inlining eliminates function call overhead, permits data to be registerized, and permits floating-point operations to be scheduled around adjacent computations.
www.osl.iu.edu /~tveldhui/papers/techniques/techniques01.html   (8572 words)

  
 Using, Maintaining and Enhancing Cobol for the GNU Compiler Collection (GCC) - 14. Writing a Compiler Front End   (Site not responding. Last check: 2007-10-13)
In other case the nodes are linked togther via another set of nodes which point to the subject nodes.
node at the end of the list is used to indicate that the parameter list is fixed in length.
(31); the parameters must be linked in the forward direction - which means you should add them to the list in reverse order..
www.eskimo.com /~johnnyb/computers/toy/cobol_14.html   (12980 words)

  
 oreilly.com -- Online Catalog: High Performance Computing
173 9.3 loop unrolled four times with preconditioning.......................
176 9.7 same loop unrolled four times with preconditioning..................
210 10.19 add a link to a list..............................................
www.oreilly.com /catalog/hpc/toc.html   (602 words)

  
 [No title]   (Site not responding. Last check: 2007-10-13)
A: The traditional solution is to allocate an array of pointers, and then initialize each pointer to a dynamically-allocated "row." See the full list for code samples.
14.13: I'm having trouble with a Turbo C program which crashes and says something like "floating point formats not linked." A: You may have to insert a dummy call to a floating-point library function to force loading of floating-point support.
Several sites archive news.answers postings and other FAQ lists, including this one; two sites are rtfm.mit.edu (directory pub/usenet), and ftp.uu.net (directory usenet).
www.faqs.org /ftp/pub/pub/usenet/news.answers/C-faq/abridged   (8766 words)

  
 JHU / CS / 600.226: Data Structures / Spring 2006
Optional: Unrolled Linked Lists; in Scheme (almost) everything is a list (or a function, depending on how you look at it)
Discuss on the mailing list under what circumstances it might be a good idea to use this data structure.
Explain your idea for a good data structure on the discussion list, and feel free to point out the shortcomings of other proposals.
www.cs.jhu.edu /~phf/2006/spring/cs226   (2418 words)

  
 comp.lang.c Answers (Abridged) to Frequently Asked Questions (FAQ) - dBforums
argument list are in the macro call, not the definition.
lists, including this one; two sites are rtfm.mit.edu (directory pub/usenet),
A hypertext version of this FAQ list is available at.com/~scs/C-faq/top.html" target="_blank">http://www.eskimo.com/~scs/C-faq/top.html.
www.dbforums.com /showthread.php?t=451344   (7936 words)

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