interfaces they offer to applications.
Comparison between Systems
A comparison betweenmultiprocessor operating systems, multicomputer
operating systems, network operating systems, and middleware based
Clients and Servers
· Servers typically manage shared resource...
Examples of distributed systems
Goals and challenges of distributed systems
Where is the borderline between a computer and a
Examples of distributed architectures
Kangasharju: Distributed Systems
October 23, 08
Definition of a...
. Depending on precisely how they are
connected and what is shared, these systems are called parallel computers,
multicomputers, or multiprocessors. They need special operating systems, but
often these are variations on the server operating systems, with special features
Degree of transparency
Same OS on all nodes
Number of copies of OS
A comparison betweenmultiprocessor operating systems,
multicomputer operating systems, network operating
Memory MIMD Machine In shared memory MIMD model, all the PEs are connected to a single global memory; all the PEs have access to this global memory (see Figure 1.6); also called as the tightly-coupled multiprocessor system. The communication between PEs in this model, takes place through the shared...
respectively. Show the contents of symbol table also.  Discuss the various compiler construction tools. OR Q2) a) b) What is the differencebetween an interpreter and a compiler?  Write LEX specifications and necessary C code that reads English words from a text file and calculates the count of...
Computer hardware models (1)
• Bus-based multiprocessor
• Homogeneous Multicomputer Systems
MPP (massively parallel processor)- MPP (massively parallel processing) is the coordinated processing of a program by multiple processor s that work on different parts of the program...
Fortunately, there exist a number of known techniques to significantly reduce
power consumption on processors and there is much on-going research in this
area. However, current processor power dissipation is at the limit of what can
be easily dealt with in desktop platforms and we must put...
, including pseudocode.
DRAFT: Parallel Computer Architecture
b. Why wouldn’t we use spinning for interprocess synchronization in uniprocessor operating
systems? What do you think are the tradeoffs between blocking and spinning on a multiprocessor?
is the differencebetween a multiprocessor and a multicomputer? A: In a multiprocessor, the CPUs have access to a shared main memory. There is no shared memory in multicomputer systems. In a multicomputer system, the CPUs can communicate only through message passing. 9. Q: A multicomputer with 256...
network versus the multicomputer? What
are the practical differencesbetween networked workstations and a commercial multicomputer?
by David Goldberg
(Xerox Palo Alto Research Center)
The Fast drives out the Slow even if the Fast is wrong.
, Chapter 1 Parallel Computer Models 1.2 Multiprocessors and Multicomputers Considering their architecture only, there are two main categories of parallel computers:
systems with shared common memories, and systems with unshared distributed memories.
Operating System. Software - Practice and Experience, 15(8):725–737. Barak, A. and Shiloh, A. (September 1985). A Distributed Load-Balancing Policy for a Multicomputer. SoftwarePractice and Experience, 15(9):901–913. Barak, A. and Wheeler, R. (February 1989). MOSIX: An Integrated Multiprocessor UNIX...
Clustering- CURE and Chameleon. Density Based Methods-DBSCAN, OPTICS. Grid Based Methods- STING, CLIQUE. Model Based Method –Statistical Approach, Neural Network approach, Outlier Analysis Unit-IV Data Warehousing: Overview, Definition, Delivery Process, Differencebetween Database System and Data...
exact meaning of the word depends on
• Synonymous terms:
– distributed function – distributed data processing – multiprocessors/multicomputers – satellite processing – back-end processing – dedicated/special purpose computers – timeshared systems – functionally modular systems
coherence ! Single OS
Cluster or multicomputer ! Distributed memory ! An OS in each box
Process/thread to processor assignment Threads of the same process will run together Processes of the same application run together Threads...
memory, Memory system design, Concurrent processors, Vector processors and multiprocessors, Array processors.
Parallelism in multiprocessors and Multicomputers, Compute-intensive processors and Multicomputers, Automatic vectorization, Hypercube systems and Key application, Data flow...