Operating Systems

operating system

2007-07-13T01:57:00.000-07:00

cont.#4.Given the following information;
Job list:
job number memory allocation
J1---740 k
J2---500k
J----700k
Memory List:
Memory Block Size
Block1------610k(low-order memory)
Block2------850k
Block3------700k(high-order memory)
Best-fit
In the Job List they have a Job1, Job2, Job3,..In memory list also have block1 to 3.The job1 has a memory requested is 740k so that the job 1 will go to block 2 while the size is 850k. In job 2 the memory requested is 500k and that's why they go to block 1 have a size of 610k. While the job3 has memory requested of 700k will go to block3 that have 700k.
First-fit
the job1 and the job2 they not allocate in block1 and 2.while the job3 is fit to the bock3
5.Given the following information:
Job List
job number memory requested
Job1---- 700k
job2----500k
Job3---740k
Memory List:
Memory Block Size
block1---610k (low-order memory)
block2---850k
block3---700k(high-order memory)
Best-fit:
job1 will go to block3. the job2 also go to block1. and the last job 3 goes to block2.
First-Fit:
6.
a.) Another variation of the free list algorithm is useful for very transient allocations of memory specially when all allocation are about the same size.
b.)It is compelled by there size and memory requested
7. Worst-fit the memory manager placed a process in the largest block of unallocated memory available. the placement will create the largest hold after the allocation, thus increasing the possibility that compare to best fit, another process can use the remaining space.
8. yes, the memory manager will know to adjust them by the value stored in relocation register all of the other values ( data values) one not marked and won't be changed after relocation other's numbers in the program, those indicating instruction, register, or constants use in the intruction, are also left alone

OPERATING SYSTEM

2007-07-11T01:42:00.000-07:00

Exercises:

research topic:

Unit name - absolute size - exponential form
byte - 1 byte -2
kilobyte -1,024 byte -2^10
megabyte -1,048,576 bytes -2^20
gigabyte -1,073,741 bytes -2^30
terabyte -1,099,511,627,776 -2^40
petabyte -1,125,899,906,824,624 -2^50

Exercises:
A.Explain he following:
Multiprogramming. Why i s it used? A multiprogramming is a technique used to utilize maximum CPU time by running multiple programs simultaneously. The execution begins with the first program and continuous till an instruction waiting for a peripheral is reached, the context of this program is stored, and the second program is memory is given chance to run. The process continued until all program finished running. Multiprogramming has no guarantee that a program will run is timely manner.
B.Internal Fagmentation. How does it occur? The internal fragmentation occurs it when a fixed
partition is partially used by program, the remaining space within the partition is unavailable to any other job and that's the time internal fragmentation occur when there is another job followed on the space. So that it will not wasted.
C.Compaction: Why is it need? Compaction is very needed because it is the process of collecting fragments of available memory space into contiguous in block by moving programs and data in a
computer's memory disks, or known as garbage collection.
E.Relocation: How often should it performed? It depend on the process of address refferences in program.
#2. Describe the Major Disadvantages for each of the four memory allocation schemes presented in the chapter. The disadvantage of this memory allocation its an overhead process, so that while compaction is being done everything else must wait.
#3.Describe the Major Advantages for each of the memory alloatiuon schemes presented in the chapter. They could be divided into segments of variable sizes of equal size. Each page, or segment, could be stored wherever there was an empty block best enough to hold it.

Architecture

2007-07-09T21:51:00.001-07:00

Processor

Intel® Pentium® processor Extreme Edition

Processor Number^Δ

840, 955, 965

Architecture

90 nm and 65 nm technology

L2 Cache

2x1MB and 2x2MB

L3 Cache

Clock Speed

3.20, 3.46 GHz and 3.73 GHz

Front Side Bus

800 MHz and 1066 MHz

Chipset


	Intel® 975X Express chipset

	Intel® 955X Express Chipset

Socket

LGA775

Motherboard


	Intel® Desktop Board D955XBK

	Intel® Desktop Board D975XBX

Architecture

2007-07-09T21:51:00.000-07:00

Processor

Intel® Pentium® processor Extreme Edition

Processor Number^Δ

840, 955, 965

Architecture

90 nm and 65 nm technology

L2 Cache

2x1MB and 2x2MB

L3 Cache

Clock Speed

3.20, 3.46 GHz and 3.73 GHz

Front Side Bus

800 MHz and 1066 MHz

Chipset


	Intel® 975X Express chipset

	Intel® 955X Express Chipset

Socket

LGA775

Motherboard


	Intel® Desktop Board D955XBK

	Intel® Desktop Board D975XBX

ARCHITECTURE

2007-07-09T21:50:00.000-07:00

Chipset	Motherboard Manufacturer	Model	Socket	Form Factor	Graphics Brand	Compare
View Detail	AMD 690G	Asus	V3-M2A690G	AM2	Barebone	ATI Radeon X1250
View Detail	AMD 690G	Asus	P1-M2A690G	AM2	Barebone	ATI Radeon X1250
View Detail	AMD 690G	Asus	P2-M2A690G	AM2	Barebone	ATI Radeon X1250

JONATHAN CALIMPITAN
MERCEDITA DUSARAN
MYLA BAIR
JENEFE SORIANO
ROMEO ZAMBRANO
MELBA DUA

ARCHITECTURE

2007-07-09T21:48:00.000-07:00

Processor Number	L2 Cache	Clock Speed	Front Side Bus Speed	Dual-Core	Intel® Virtualization Technology±	Intel® 64Φ	Execute Disable Bit°
65-nm Technology
540	1MB	1.86 GHz	533 MHz
440	512KB	2.00 GHz	800 MHz
430	512KB	1.80 GHz	800 MHz
420	512KB	1.60 GHz	800 MHz

± Intel® Virtualization Technology (Intel® VT) requires a computer system with an enabled Intel® processor, BIOS, virtual machine monitor (VMM) and, for some uses, certain platform software enabled for it. Functionality, performance or other benefits will vary depending on hardware and software configurations and may require a BIOS update. Software applications may not be compatible with all operating systems. Please check with your application vendor.

2007-07-04T21:57:00.000-07:00

Founders of Intel
Gordon Moore
Bob Noyce
Stanley Mazor
Federico Faggin,
Robert Noyce
Stanley Mazor
Ted Hoff

computer architecture

2007-07-04T21:52:00.000-07:00

The History of Intel

Topics

The History of Intel

Intel was founded on July 18, 1968 with one main goal in mind: to make semiconductor memory more practicle. Intels first microprocessor, the 4004 microcomputer, was released at the end of 1971. The chip was smaller then a thumbnail, contained 2300 transistors, and was capable of executing 60,000 operations in one second. Shortly after the release of th 4004 the 8008 microcomputer was released and was capable of executing twice as many operations per second then the 4004. Intels commitment to the microprocessor led to IBM's choice of Intel's 8088 chip for the CPU of the its first PC. In 1982, Intel introduced the first 286 chip, it contained 134,000 transistors and provided around three times the performance of the other microprocessors at the time. In 1989 the 486 processor was released that contained 1.2 million transistors and the first built in math coprocessor. The chip was approximately 50 times faster then Intels original 4004 processor and equaled the performance of a powerful mainframe computer. In 1993 Intel introduced the Pentium processor, which was five times as fast as the 486, it contained 3.1 million transistors, and was capable of 90 million instructions per second (MIPS). In 1995 Intel introduced its new technology, MMX, MMX was designed to enhance the computers multimedia performance. Throughout the years that followed Intel released several lines of processors including the Celeron, the P2, P3, and P4. Intel processors now reach speeds upwards of 2200 MHZ or 2.2 GHZ.

assignment1

2007-06-25T21:16:00.001-07:00

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assignment 1

2007-06-25T21:04:00.000-07:00

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