cilk - Synonyms for cilk | Synonyms Of cilk

Examples of "cilk"
Inlets were removed when Cilk became Cilk++, and are not present in Cilk Plus.
In the original MIT Cilk implementation, the first Cilk keyword is in fact codice_1, which identifies a function which is written in Cilk. Since Cilk procedures can call C procedures directly, but C procedures cannot directly call or spawn Cilk procedures, this keyword is needed to distinguish Cilk code from C code. Cilk Plus removes this restriction, as well as the codice_1 keyword, so C and C++ functions can call into Cilk Plus code and vice versa.
On July 31, 2009, Cilk Arts announced on its web site that its products and engineering team were now part of Intel Corp. Intel and Cilk Arts integrated and advanced the technology further resulting in a September 2010 release of Intel Cilk Plus. Cilk Plus adopts simplifications, proposed by Cilk Arts in Cilk++, to eliminate the need for several of the original Cilk keywords while adding the ability to spawn functions and to deal with variables involved in reduction operations. Cilk Plus differs from Cilk and Cilk++ by adding array extensions, being incorporated in a commercial compiler (from Intel), and compatibility with existing debuggers.
The original Cilk language was based on ANSI C, with the addition of Cilk-specific keywords to signal parallelism. When the Cilk keywords are removed from Cilk source code, the result should always be a valid C program, called the "serial elision" (or "C elision") of the full Cilk program, with the same semantics as the Cilk program running on a single processor. Despite several similarities, Cilk is not directly related to AT&T Bell Labs' Concurrent C.
Cilk++ added an additional construct, the parallel loop, denoted in Cilk Plus. These loops look like
The code example above uses the syntax of Cilk-5. The original Cilk (Cilk-1) used a rather different syntax that required programming in an explicit continuation-passing style, and the Fibonacci examples looks as follows:
Originally developed in the 1990s at the Massachusetts Institute of Technology (MIT) in the group of Charles E. Leiserson, Cilk was later commercialized as Cilk++ by a spinoff company, Cilk Arts. That company was subsequently acquired by Intel, which increased compatibility with existing C and C++ code, calling the result Cilk Plus.
Below is a recursive implementation of the Fibonacci function in Cilk, with parallel recursive calls, which demonstrates the , and keywords. The original Cilk required any function using these to be annotated with the keyword, which is gone as of Cilk Plus. (Cilk program code is not numbered; the numbers have been added only to make the discussion easier to follow.)
Cilk, Cilk++ and Cilk Plus are general-purpose programming languages designed for multithreaded parallel computing. They are based on the C and C++ programming languages, which they extend with constructs to express parallel loops and the fork–join idiom.
(In Cilk Plus, the keywords are spelled and , or and if the Cilk Plus headers are included.)
In April 1994 the three projects were combined and christened "Cilk". The name Cilk is not an acronym, but an allusion to "nice threads" (silk) and the C programming language. The Cilk-1 compiler was released in September 1994.
Cilk++ differs from Cilk in several ways: support for C++, support for loops, and hyperobjects a new construct designed to solve data race problems created by parallel accesses to global variables. Cilk++ was proprietary software. Like its predecessor, it was implemented as a Cilk-to-C++ compiler. It supported the Microsoft and GNU compilers.
Cilk Plus's array slicing differs from Fortran's in two ways:
Prior to , the market for Cilk was restricted to high-performance computing. The emergence of multicore processors in mainstream computing means that hundreds of millions of new parallel computers are now being shipped every year. Cilk Arts was formed to capitalize on that opportunity: in 2006, Leiserson launched Cilk Arts to create and bring to market a modern version of Cilk that supports the commercial needs of an upcoming generation of programmers. The company closed a Series A venture financing round in October 2007, and its product, Cilk++ 1.0, shipped in December, 2008.
The Cilk scheduler uses a policy called "work-stealing" to divide procedure execution efficiently among multiple processors. Again, it is easiest to understand if we look first at how Cilk code is executed on a single-processor machine.
Cilk was implemented as a translator to C, targeting the GNU C Compiler (GCC). The last version, Cilk 5.4.6, is available from the MIT Computer Science and Artificial Intelligence Laboratory (CSAIL), but is no longer supported.
As an example, consider the following trivial fork–join program in Cilk-like syntax:
In October 2012 the project was discontinued in favour of other Intel projects: Cilk Plus and Threading Building Blocks.
In addition to C++ and Objective-C, Ch, Cilk and Unified Parallel C are nearly supersets of C.
The Cilk programming language grew out of three separate projects at the MIT Laboratory for Computer Science: